A4 AnswerISOhas five categories of networ k managementt fault accounting configuration and name pecfopmance and sec

5 What NMS feature of Cisco's product is a replacement for CWSI List at least four other features that this pnoduct is respons bw for. A5 Answer The LAN Management Solution (LMS) contains nGenius Real Time Monitor, Campus Manager, Device Fault Manager, Content Flow Monitor, CiscoView, and Resource Manager Essentials.LMSis part of the CiscoWorks family of products for fault and configuration management and troubleshooting of campus LANs and is a follow-on to the CiscoWorks for Switched...

Appendix A Answers to Review Questions

Chapter 1's Review Questions Chapter 2's Review Questions Chapter 3's Review Questions Chapter 4' s Review Questions Chapter 5's Review Questions Chapte4 6's Review Questions Chapter 7's Review Questions Chapter 8's Review Questions C hapter 9's Review (Questions Cha pter 10's Reaaiew Questions 1 The Transport Layer is the host-to-host layer in the OSI model and the TCP IP suite. It is in- between the upper and lower layers and depending on the protocol is responsible for delivery, error...

Baselining and Docume ntation

Beselining and documentation are crucia I to your l ongeterm success wimh internetwork wroudi eshooting Thi s is not dust th eory for if you don't know what is normal, how do you know where to begin with troubleshooting. What if you get the call saying the network is slow Slow compared to what Did you colleco any dpta when the network was i nstalled and ru nni ng propetly, do you au dit it rrom tim e to bme, or havp you just taken the put-out-the-fire approach to network management You should...

Bgp

Border Gateway Protocol (BGP) is an EGP that pretty much replaces the legacy EGP protocol itself. BGP performs routing between autonomous systems and is the standard routing protocol on the Internet. This is referred to as External BGP (EBGP), whereas when BGP is used to route within an AS it is referred to as Interior (IBGP). BGP is not a routing protocol for the fainthearted. It requioes all manual configurations for a very good reason you are not only affecting you, but you are also...

Caution

Be careful when you come out of config mode from changing the configuration register and issue the reload command. In boot helper (rxboot) mode, it is important not to save the configuration. If you save at this point, some commands may be lost because the bootstrap software does not support the full command set. Note h ow you were made to confirm more than once that you really wanted to erase Flash. Whether you need to erase depends on the amount of Flash installed and how much the IOS file or...

CCO Marketplace

CCO Market place is a g lobal e-commerce portal for online ordering and management to give you 24-hour by 7-day online purchasing, 365 days a year. Explore the Networking Products Marketplace at oo o.cisco.com go ma rketplaces, o here you nan place and mana ge ord ers for products and sprvices. Go tp the Cisco Merchan dise store at Land's En d to order shirts, ha ts, bags, jackets, and other apparel. Land's Eud is even making use of Cisco technology oith their click-to-talk customer-service...

Shooting Trouble

This chapter serves as the basis for the troubleshooting exercises throughout this book. In addition to a solid understanding of specific technologies, effective troubleshooting requires that you follow consistent procedures that are based on industry standards and reliable methods. The Open System Interconnection (OSI) model and the TCP IP suite can help you methodically divide and conquer a problem or learn a new internetworking topic (by taking a layer-by-layer approach, for instance). This...

Trouble Tickets The Sum of All Fears

This final chapter offers you a practical comprehensive troubleshooting review. Part I of this book covers protocol characteristics, methodology, and tools. Part II focuses on supporting the IP and IPX protocols as well as some other interesting topics such as upgrades and password recovery. The focus of Part III is Ethernet, switching, and VLANs. Part IV is about supporting the WAN. I take a slightly different approach in this chapter. In this part, I present you with a new physical scenario...

Shooting Trouble with Novell IPX

Much great networking matter came from Xerox Palo Alto Research Center (PARC). Novell NetWare is no exception it was derived from Xerox Network Systems (XNS) in the early 1980s. It is a client-server network operating system (NOS) well known for its file and print services. Cisco routers are found in Novell networks because they offer features not available in Novell's own product implementations. This chapter focuses on common issues in supporting Novell clients, servers, and Cisco routers in...

Shooting Trouble with CatOS and IOS

Cisco started Us i nternetworking revolution with routers, but soon found out with the help of those they acquired that switches are quite beneficial, too. A solid understanding of switches and routers s crucial for supporting networks as well as obtaining your CCNP and other industry certifications. This chapter assumes knowledge of the previous chapters, but in particular Chapter 5, Shooting Trouble with Ethernet, and Chapter 3, Shooting Trouble with IP. In this chapter you eliminate any hubs...

Shooting Trouble with Hdlc Ppp Isdn Bri and Dial Backup

This chapter addres res various CCTP Support WAT topics. It includes scenarios and Trouble Tickets for Nigd-Level Data Link Control (HDLC), Point-to-Point Protocol (PPP), Integrated Services Digital Network Basic Rate Interface (ISDN BRI), and Dial Backup. It is assumed you have internetworking experience particularly with IP and routing protocols in the WAT. You will analyze these WAT technologies individually and together for more practical application. This chapter in combination with the...

Cisco Connection Online CCO

CCO (www.cisco.com) is a global intranet accessible over the Internet. It contains such links as Solu ons for Yo ur Network Ordering Training, Events, and Seminars Corporate News and Inform aaion Products and Technologies Service and Support and Partners and Resellers. Products and Technologies is a good place to start for troubleshooting. These pages deliver up-to-date technical information that is continually updated by Cisco TAC engineers. Figure 2-3 shows the CCO home page.

Cisco Debug Commands

Because of the impact on the processor and memory, only use debug commands for troubleshootir traffic flow or misconfigurations, not for normal daily operations. Ideally, debug commands are helpful during peri ods when there is not much traffic and not many users. You must lb e in privileged exec (enable) mode to use it, and debug requires process switching. Son debug commands force you to turn off fast switching entirely to receiv e debug output. Like logging debug default system error...

Cisco Show Contrnuands

Disco show command s give a sn apshot of whet is eecurting to monitor status , detect neighbors, sp perform ance issues, a nd isolase proele ms. This discussion coeees severa I sh ow commands to prepa you foe tho chapter pra ctica I e xeecise, various Trouble Tic kets rheoughout the book , and eor your overall real-world troubleshooting needs i Feel yree to us, the qu htion maek (o. tor help oe more wetaiil. Be aware toa t shove yield s different results according to whether you are in user...

Cisco Trace Com mands

Thetraceroute nom man d uses a h op-by-hop approach to finding the problem. It is a valuable tool for figuring out how far can you get and finding exactly where the connection fails. Take a look at how the tool works. Three probes are se nt to each hop starting with a time-to-live (TTLT of one for the first hop. When the TTL expires, the round-trip time for each probe is sent back to the original After every third probe, the TTL is increased by one to make it to the next router. Often, timeouts...

Cisco [Do cu mentation CD ROM

The portable v ersion of C CO, the Gsco Documentation CD-ROM (Doc CD), is available to you in many ways, including the following Registered Cisco direct customers can order Cisco product documentation from the Networking Products Marke aPlace Registeredcisco.com users can order the Doc CD through the online Subscription Store www.cisco.com go subscription NonregisteeedCisco xom us ers can order d ouumentation through a local acc ount aepresenrative by callieg Cisco rotpotate hea dqdarters...

Copyright

Copyright 2003 Cisco Systems, Inc. 201 West 103rd Street Indianapolis, IN 46290 USA All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission from the publisher, except for the inclusion of brief quotations in a review. Printed in t hie United States of America 1 2 3 4 5 6 7 8 9 0 Library of Congress...

Desktop Tools

Internetworks have become complex for many reasons, including LAN WAN architecture, media, technologies, and protocols. The progression from host-centric environments to distributed clientserver platforms still very much requires a hierarchical network to aid in troubleshooting. So far, I have reviewed va rious internetworking tools. However, it is impossible to be an expert in everything. If you are a WAN guru, you may lack technical expertise at the desktop. If you are a LAN guru, you may...

Dial Backup

Dial backup is available in three varieties Floating static routes o Dialer watch Rega s of the method, you need to know what the primary and backup links are and what interfa ces are involved. The type of interface as well as your overall routing design are influential factors as to which method may work best for you. For example, backup interface is not designee for running on a Frame Relay physical interface, but it works just fine if using subinterfaces. Alway. make sure the primary and...

Dialon Demand Routing

DDR is dynamic routing on an as-needed basis to reduce WAN communication costs. It is good for periodic connections that transfer small amounts of data. It obviously is not a solution for today's e commerce sites. Typically, static or default routes are used. After specifying the route (if needed), define the traffic that brings up the link. It is rritiral to remember that any traffic, whether interest or not, can traverse the link while it is up. The exception is broadcast multicast unless it...

Duck r1 issues

Mu ltiple OSPF ro uting processes are not needed here. (You nee d to redistribute if you leave this uoiess yoai want complete separate routing ptocesses.) OSPF 2 uses a sobnet mask rather than a wildcard mask. Depending on your IOS version, tlce IOS may autocorrect this into a w idcaed mas My ietent was for you to remove the router OSPF 2 configuration not redistribute. Missing network 172.16.1.0 statement under OSPF 1, so you can't reach the two 64 kbps links between goose and swan.

Duck rlC issues

Aliases were set for the show command (and its shortcuts) to not.this.time. However, you can use write terminal in place of show run to see and change the alias commands. RIP is only sending version 1, which doesn't understand discontiguous subnets. Network 10.10.10.0 advertised in both RIP and OSPF and redistributed. o Encapsulation mismatch on s0. heron (r2) issues Passive in7erface on s0 under EIGRP. The EIGRP ip summary-address statement gives the same effe ct as the default auto-summary...

EE ncapsulatio n

I wouldL't expect encapsulation to be a new topic for you. In this chapter you just change your WA encapsulation or frame type from HDLC to Frame Relay to communicate using a connection-oriente Layer technology. With Frame Relay you communicate from DTE (router) to DTE (router) through a Each d ata-l ink segment connects to the nearest Frame Relay switch (DCE). Typically the DLCI has significance. This local significance is just like my cell phone speed dial. I have programmed numb< Mom, and...

Eigrp

Novell servers do not understand the Enhanced IGRP (EIGRP) routing protocol. However, EIGRP is for IPX on the LAN and EIGRP on the WAN. Table 4-9 illustrates some IPX EIGRP configuration and Hommand s. Redist ribution occurs automatically between IPX end H GFIP unles s you turn this featur redistribute. Other reasons for IPX on the LAN and EIGRP on the WAN include the increased netw incremental SAP updates. Table 4-9. IPX EIGRP Configuration and Troubleshooting Comm Table 4-9. IPX EIGRP...

Eth ern et Addressing

At the Data Link Layer, Ethernet, Token Ring and FODI all share the same addressing format of 48 bits. This, as many other things in networking, came from Xerox PARC, but is now administered by the IEEE. Think of this like a social security number and a name. I am certain there is another Donna Harrington in the world, but we do not share the same social security number. I don't think I'll capture my social security number for you in Sniffer just in case. Figure 5-16 illustrates some examples...

Ethernet Frames

InChapter 1, Shooting Trouble, you learned that the protocol data unit (PDU) for Layer 2 is frames. Frames refer to the entire message from Layer 2 to Layer 7. Control bits mark the beginning and end of frames just as picture frames mark the edges of a picture. Because you are already familiar wit hi how Layer 2 allows different devices to take turns on the media (media access control), and how the network works (logical topologies), now I want you to look at how Ethernet data is actually...

Exa mple 1017 Document the kentnarrows Switch 3512XL IOS

Kentnarrows(config) logging 172 .16.1.42 kentnarrows(config) logging trap informational kentnarrows(config) logging buffer 500000 kentnarrows(config) service timestamps debug datetime msec kentnarrows(config) service timestamps log datetime msec kentnarrows(config) ntp server 172.16.1.1 kentnarrows(config) ntp source vlan1 kentnarrows(config) end kentnarrows show ntp status Clock is synchronized, stratum 9, reference is 172.16.1.1 nominal freq is 381.4697 Hz, actual freq is 381.4697 Hz,...

Exa mple 630 Setting Speed and Duplex on the 3512XL IOS

3512XL(config) interface fastethernet 0 1 3512XL(config-if) speed 100 3512XL(config-if) duplex full 3512XL(config-if) end 3512XL show interfaces fastethernet 0 1 FastEthernet0 1 is up, line protocol is up Hardware is Fast Ethernet, address is 00d0.7968.8481 (bia 00d0.7968.8481) MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255 255, load 1 255 Encapsulation ARPA, loopback not set, keepalive not set Full-duplex, 10 0Mb s, 10 0BaseTX FX Portfast should be implemented only on the three switch...

Exa mple 634 Testing UTt on the 3512

Sw3512XL clock set 8 00 00 25 Nov 2002 sw3512XL configure terminal sw3512XL(config) service timestamps debug datetime msec localtime sw3512XL(config) service timestamps log datetime msec localtime sw3512XL copy running-config startup-config sw3512XL debug spantree events Unplug the connectio n to 0 1 1 on the 3512XL and wait for the line and protocol to go down. Plug cable back in and watch the debug output that displays as in Example 6-35.

Exa mple 735 Configuring OSPF for InterVLAN Routing

R1 configure terminal r1(config) router ospf 7 r1 (config-router) network 192.168.5.0 0.0.0.255 area 7 r1 copy running-config startup-config r2(config) router ospf 7 r2(config-router) network 192.168.5.0 0.0.0.255 area 7 r2 copy running-config startup-config r3(config) router ospf 7 r3(config-router) network 192.168.5.0 0.0.0.255 area 7 r3 copy running-config startup-config Now use show ip protocols and show ip route to confirm your OSPF configuration as in Example 3(5.

Exa mple 847 Advertising the 1721684 Network

R1(config-router) network 172.16.8.4 mask 255.255.255.252 r1 copy running-config startup-config Note that in the preceding example the mask had to be typed in for the network statement because it differs from the classful mask. It is easy to forget to type the word mask, but in the Cisco software you can always rely on the question mark ( ) for help.

Exa mple 91 Shooting Trouble on the WAN rl Through r3 Configuration

R1 (config-if) shut r1(config-if) encap hdlc r1(config-if) bandwidth 64 r1(config-if) ip address 192.168.9.1 255.255.255.252 r1(config-if) no shut r1(config-if) no router ospf 1 r1(config) router eigrp 109 r1(config-router) network 192.168.9.0 r1 copy running-config startup-config r2(config) interface s0 r2 (config-if) shut r2(config-if) encap hdlc r2(config-if) bandwidth 64 r2(config-if) ip address 192.168.9.6 255.255.255.252 r2(config-if) no shut r2(config-if) no router ospf 1 r2(config)...

Example 101 Building a Layer 2 Baseline for the Routers

Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-JS-L), Version 12.0(21a), RELEASE SOFTWARE (fc1) Copyright 1986-2002 by cisco Systems, Inc. Compiled Sat 02-Feb-02 02 08 by nmasa Image text-base 0x030520E0, data-base 0x00001000 ROM System Bootstrap, Version 5.2(8a), RELEASE SOFTWARE BOOTFLASH 3000 Bootstrap Software (IGS-RXBOOT), Version 10.2(8a), RELEASE SOFTWAR duck uptime is 7 hours, 34 minutes System restarted by power-on System image file is flash c2 5 0 0-js-l.12...

Example 1016 Document the chesapeakebay Switch 2900 CatOS

Chesapeakebay> (enable)set logging server 172.16.1.42 172.16.1.42 added to System logging server table. chesapeakebay> (enable)set logging timestamp enable System logging messages timestamp will be enabled. chesapeakebay> (enable)set logging buffer 500000 Usage set logging buffer < buffer_size> (buffer_size 1 500) chesapeakebay> (enable)set logging buffer 500 System logging buffer size set to < 500> chesapeakebay> (enable)set ntp server 172.16.1.1 NTP server 172.16.1.1 added....

Example 1018 Viewing NTP on duck

Address ref clock st when poll reach delay offset disp * 127.127.7.1 127.127.7.1 7 15 64 377 0.0 0.00 0.0 * master (synced), master (unsynced), + selected, - candidate, configured Clock is synchronized, stratum 8, reference is 127.127.7.1 nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**19 reference time is C0F0EC36.D3096102 (10 43 02.824 UTC Tue Jul 30 2002) clock offset is 0.0000 msec, root delay is 0.00 msec root dispersion is 0.02 msec, peer dispersion is 0.02 msec...

Example 102 Building a Layer 2 Baseline for the tatOS Switches

WS-C29 0 0 Software, Version McpSW 4.4(1) NmpSW 4.4(1) Copyright 1995-1999 by Cisco Systems NMP S W compiled on Jan 6 1999, 18 05 22 MCP S W compiled on Jan 06 1999, 17 50 33 Hardware Version 2.3 Model WS-C2900 Serial 005352782 Mod Port Model Serial Versions 1 2 WS-X2 9 0 0 005352782 Hw 2.3 2 12 WS-X2 9 01 008675483 Hw 1.4 Module Total Used Free Total Used Free Total Used Free Uptime is 0 day, 7 hours, 37 minutes sl0 sc0 vlan 1 inet 10.10.10.45 netmask 255.255.255.0 chesapeakebay> (enable)set...

Example 1023 Trouble Ticket 5 Syslog Capture

Aug 01 13 37 41 local Listening for Syslog messages on IP address 172.16.1.42 Aug 01 13 38 45 172.16.2.9 58 Aug 1 01 39 09.524 SYS-5-CONFIG_I Configured from console by console Aug 01 13 40 34 172.16.1.41 82 Aug 1 01 40 59.069 SYS-5-CONFIG_I Configured from console by console 01 13 47 27 172.16.3.10 81 Aug 1 01 47 51.733 Line protocol on Interface Serial1.500, changed 01 13 47 48 172.16.3.10 87 Aug 1 01 48 13.345 01 13 50 16 172.16.3.10 88 Aug 1 01 50 38.612 01 13 58 38 172.16.1.18 138 Aug 1 01...

Example 104 Building a Layer 3 and Above Baseline from the duck Rout

Sending 5, 100-byte ICMP Echos to 172.16.1.9, timeout is 2 seconds Success rate is 100 percent (5 5), round-trip min avg max 16 16 16 ms duck ping swan Sending 5, 100-byte ICMP Echos to 172.16.3.9, timeout is 2 seconds Success rate is 100 percent (5 5), round-trip min avg max 4 5 8 ms duck ping kentnarrows Sending 5, 100-byte ICMP Echos to 172.16.1.45, timeout is 2 seconds Success rate is 100 percent (5 5), round-trip min avg max 16 18 20 ms duck ping chesapeakebay Sending 5, 100-byte ICMP...

Example 105 Building a Layer 3 and Above Baseline frrm the duck Rrut Interfaces

YES unset administratively down down Ethernet0 is up, line protocol is up Hardware is Lance, address is 0000.0c8d.6705 (bia 0000.0c8d.6705) Description duck to chesapeakebay backbone Internet address is 10.10.10.1 24 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255 255, load 1 255 Encapsulation ARPA, loopback not set, keepalive set (10 sec) Serial0 is up, line protocol is up Hardware is HD64570 Description duck to goose Internet address is 172.16.1.10 29 MTU 1500 bytes, BW 1544 Kbit, DLY...

Example 106 Building a Layer 3 and Above Baseline from the duck Rout Protocols

Sending updates every 30 seconds, next due in 12 seconds Invalid after 180 seconds, hold down 180, flushed after 240 Default version control send version 2, receive version 2 Codes C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area type 1, N2 - OSPF NSSA external type 2 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default R 172.16.1.40 29 120 1 via 172.16.1.9,...

Example 108 Building a Layer 3 and Above Baseline from the heron

Tracing the route to kentnarrows (172.16.1.45) 1 duck (10.10.10.1) 208 msec 124 msec 56 msec 2 goose (172.16.1.9) 12 msec 12 msec 8 msec 3 kentnarrows (172.16.1.45) 12 msec * 8 msec heron trace knappsnarrows Tracing the route to knappsnarrows (172.16.2.45) 1 osprey (172.16.2.18) 0 msec 4 msec 0 msec 2 knappsnarrows (172.16.2.45) 12 msec 4 msec 8 msec heron show ip interface brief IP-Address 10.10.10.2 172.16.2.2 172.16.2.9 172.16.2.17 OK Method Status YES manual up YES manual up YES manual up...

Example 109 Document the duck Router

Duck clock set 9 59 00 July 30 2002 duck configure terminal duck(config) service timestamps debug datetime msec duck(config) service timestamps log datetime msec duck(config) logging 172.16.1.42 alerts Immediate action needed (severity critical Critical conditions (severity debugging Debugging messages (severity emergencies System is unusable (severity informational Informational messages (severity notifications Normal but significant conditions (severity warnings Warning conditions (severity...

Example 21 show controllers on DCE End with serial 0 Up and Running

HD unit 0, idb 0xDFE7C, driver structure at 0xE52F8 buffer size 1524 HD unit 0, V.35 DCE cable, clockrate 64000 The shaded line emphasizes the V.35 DCE cable with a clock rate of 64000. The DCE end of a seria line always provides caking (timing synchronizafio no. Normally you rec eive the clockfrom the service provider, but in a lab s cenario a back-to-back 60- pin ser oal cattle is used (in which the DCE end requires the clock rate command). You can order these cables for your lab from such...

Example 211 Testing the Routing Protocol

Internet Protocol routing is enabled Ethernet0 is up, line protocol is up Serial1 is administratively down, line protocol is Sending updates every 30 seconds, next due in 20 Invalid after 180 seconds, hold down 180, flushed Outgoing update filter list for all interfaces is Incoming update filter list for all interfaces is Default version control send version 1, receive Codes C - connected, S - static, I - IGRP, R - RIP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF...

Example 212 show arp and show ip arp

Sending 5, 100-byte ICMP Echos to 192.168.3.5, timeout is 2 seconds Success rate is 80 percent (4 5), round-trip min avg max 1 3 4 ms r2> ping 192.168.3.5 Sending 5, 100-byte ICMP Echos to 192.168.3.5, timeout is 2 seconds Success rate is 100 percent (5 5), round-trip min avg max 1 2 4 ms r2> show arp Age (min) Hardware Addr Type Interface Protocol Address Internet 192.168.3.1 Internet 192.168.3.5 r2> show ip arp Protocol Address Internet 192.168.3.1 Internet 192.168.3.5 r2> show...

Example 213 show version

Translating shver domain server (255.255.255.255) Unknown command or computer name, or unable to find computer address r2> show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.0(5), RELEASE SOFTWARE (fc1) Copyright 1986-1999 by cisco Systems, Inc. Compiled Tue 15-Jun-99 19 57 by phanguye Image text-base 0x0303D744, data-base 0x00001000 ROM System Bootstrap, Version 11.0(10c)XB1, PLATFORM SPECIFIC RELEASE SOFTWARE (fc1) BOOTFLASH 3000...

Example 215 show start show config Command Output

R2 show start r2 show startup-config service timestamps debug uptime service timestamps log uptime no service password-encryption hostname r2 ip subnet-zero ip host r1 192.168.2.1 ip host hostA 192.168.1.11 ip host hostB 192.168.1.12 ip host hostC 192.168.3.5 ip host r2 192.168.2.2 process-max-time 200 interface Ethernet0 description r2 e0 to hostC Win98Dell ip address 192.168.3.1 255.255.255.0 no ip directed-broadcast interface Serial0 description r2 s0 DCE to r1 s0 DTE bandwidth 64 ip address...

Example 216 show flash on a 2500 Series Router

System flash directory File Length Name status 7567564 bytes used, 9209652 available, 16777216 total 16384K bytes of processor board System flash (Read ONLY) r2> The shaded lines indicate that there is one file in Flash that takes up 7 MB out of the existing 16 ME avail able. Th e last li Te shows that the system Flash is read-only. The 2500 series routers run the I( from Flash because they were designed at a time when Cisco was trying to save users money. The image file is relocatable and is...

Example 219 show process Output

CPU utilization for five seconds 21 19 one minute 28 five minutes 23 Process Meter heaps Manager Total 18260536, Used 1915000, Free 16345536 Freed Holding Getbufs 1252 1641800 0 Retbufs Process 0 *Init* 0 *Sched* 0 *Dead* o Load Meter Freed Holding Getbufs Retbufs Process 1914160 Total I cut most of the output from the commands in Example 2-19 because the main emphasis here is c the beginning shaded lines dealing with the CPU utilization and memory usage. show process shows th e a vera ge CPU...

Example 220 show stacks Output

Minimum process stacks Free Size Name 2348 4000 Init 3468 4000 RADIUS INITCONFIG 3388 4000 DHCP Client 1964 4000 Exec 3500 4000 Router Init Interrupt level stacks Level Called Unused Size Name 3 3 2772 3000 Serial interface state change interrupt 4 13976 2576 3000 Network interfaces 5 171009 2864 3000 Console Uart r2> Example 2-21 showe the outp ut of sh ow buff erst inclu d ng the size o- tue vatio us buffer pools. Th router s presty smart n seeving its customers (or should I say allocating...

Example 222 show techsupport Output

------------------ show version ------------------ Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.0(5), RELEASE SOFTWARE (fc1) 32K bytes of non-volatile configuration memory. 16384K bytes of processor board System flash (Read ONLY) ------------------ show running-config ------------------ Building configuration. . . Current configuration version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption...

Example 225 Trace Troubleshooting

Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds Success rate is 0 percent (0 5) r2> trace 192.168.1.1 Tracing the route to 192.168.1.1 1 * * * C 192.168.2.0 24 is directly connected, C 192.168.3.0 24 is directly connected, Sending updates every 30 seconds, next due in 23 seconds C 192.168.1.0 24 is directly connected, C 192.168.2.0 24 is directly connected,

Example 226 Now I Can Ping

R1 (config-router) network 192.168.1.0 r1 (config-router) network 192.168.2.0 write mem is the same as copy run start Building configuration. . . r1 show ip route C 192.168.1.0 24 is directly connected, EthernetO C 192.168.2.0 24 is directly connected, SerialO R 192.168.3.0 24 120 1 via 192.168.2.2, 00 00 02, SerialO r1 exit Connection to r1 closed by foreign host r2> show ip route R 192.168.1.0 24 120 1 via 192.168.2.1, 00 00 25, Serial0 C 192.168.2.0 24 is directly connected, Serial0 C...

Example 23 show controllers on DTE End with serial 0 Up and Running

HD unit 0, idb 0xFC1A8, driver structure at 0x101628 buffer size 1524 HD unit 0, V.35 DTE cable cpb 0xE2, eda 0x4064, cda 0x4078 RX ring with 16 entries at 0xE24000 00 bd_ptr 0x4 00 0 pak 0x104A60 ds 0xE2F240 status 80 pak_size 45 01 bd_ptr 0x4 014 pak 0x103E60 ds 0xE2C9D8 status 80 pak_size 45 r1> It is oAten diffiuult -o discuss one tOS command wit ho ut men-i omng another F example, it is almost impossible to discuss the show controllers command without mentioning the show interfaces...

Example 230 Practical debug Using Time Stamps

Debug Timestamp debug messages log Timestamp log messages < cr> r1(config) service timestamps debug datetime Timestamp with date and time uptime Timestamp with system uptime < cr> r1(config) service timestamps debug datetime localtime Use local time zone for timestamps msec Include milliseconds in timestamp show-timezone Add time zone information to timestamp < cr> r1(config) service timestamps debug uptime Knowing and minimizing the impact of troubleshooting tools on device...

Example 231 Using an ACL with debug

R1(config) ip access-list extended limitdebug r1(config-ext-nacl) permit tcp host 192.168.1.11 gt 1023 host 192.168.3.5 eq www r1(config-ext-nacl) permit tcp host 192.168.3.5 eq www host 192.168.1.11 gt 1023 r1 (config-ext-nacl) exit r1(config) interface s0 r1(config-if) no ip route-cache r1 debug ip packet limitdebug detail Notice in Example 2-31 that the named ACL limitdebug is created, fast switching is disabled on the interface, and the ACL is applied to only the debug output according to...

Example 232 debug ip icmp

ICMP packet debugging is on r2 ping 192.168.1.1 Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds Success rate is 100 percent (5 5), round-trip min avg max 32 34 36 ms r2 Success rate is 100 percent (5 5), round-trip min avg max 32 34 36 ms r2 All possible debugging has been turned off Example 2-32 illustrates the five ICMP Echo Replies received from 192.168.1.1, whereas Example 2 33 shows the output of debug ip packet. Packetanything means more detail and stress on the device...

Example 233 debsg ip packet

IP packet debugging is on r2 ping 192.168.1.1 Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds Success rate is 100 percent (5 5), round-trip min avg max 36 36 40 ms r2 12 54 13 12 54 13 12 54 13 12 54 13 12 54 13 12 54 13 Although Example 2-34 is even more stressful, it provides detailed output. First I issue a show debsg -o verify that no debug comm ands are currently running. Then I issue the debsg ip packe detail command. Note the shaded area showing the Echo Reply ICMP...

Example 234 debug ip packet detail

, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds is 100 percent (5 5), round-trip min avg max 40 41 44 ms s 192.168.2.2 (local), d 192.168.1.1 (Serial0), len 100, sending s 192.168.1.1 (Serial0), d 192.168.2.2 (Serial0), len 100, rcvd 3 s 192.168.2.2 (local), d 192.168.1.1 (Serial0), len 100, sending s 192.168.1.1 (Serial0), d 192.168.2.2 (Serial0), len 100, rcvd 3 s 192.168.3.1 (local), d 255.255.255.255 (Ethernet0), len 72, s 192.168.2.2 (local), d 255.255.255.255 (Serial0), len 52,...

Example 235 sh int switching Output

Obviously , some of teese co mman ds are pro bably documented fo ra reasono so if you insistr make su re you r job is not on th e linm. By the wa y, this is what tesn labs are for. The following section moves the focus away from Cisco-specific commands and websites for troubleshooting an d looks at network management as a too 1.

Example 236 ipconfig on the Desktop

Microsoft Windows 2000 Version 5.00.2195 (C) Copyright 1985-2000 Microsoft Corp. C > ipconfig Ethernet adapter F6BB63C3-5752-480C-96DB-206E49F87839 Connection-specific DNS Suffix . Ethernet adapter Local Area Connection Autoconfiguration IP Address. . . 192.168.1.11 Subnet Mask 255.255.255.0 Pinging 192 . b68 . 1. 12 with 32 bytes of data Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Reply from 192.168.1.12 bytes 32 time< 10ms...

Example 237 Command Prompt Ping Output

Pinging 192.168.1.12 with 32 bytes of data Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Ping statisnics for 192.168.1.12 Packets Sent 4, Received 4, Lost 0 (0 loss), Approximate round trip times in milli-seconds Minimum 0ms, Maximum 0ms, Average 0ms Pinging hostb 192.168.1.12 with 32 bytes of data Reply from 192.168.1.12 bytes...

Example 238 ARP Cache on hosta

Pinging hostb 192.168.1.12 with 32 bytes of data Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Reply from 192.168.1.12 bytes 32 time< 10ms TTL 128 Ping statistics for 192.168.1.12 Packets Sent 4, Received 4, Lost 0 (0 loss), Approximate round trip times in milli-seconds Minimum 0ms, Maximum 0ms, Average 0ms C > tracert hostb Tracing route to hostb 192.168.1.12 over a maximum...

Example 24 show interfaces and clear counters

Ethernet0 is up, line protocol is up Hardware is Lance, address is 0000.0c38.a05d (bia 0000.0c38.a05d) Description r2 e0 to HostC Win98Dell Internet address is 192.168.3.1 24 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255 255, load 1 255 Encapsulation ARPA, loopback not set, keepalive set (10 sec) ARP type ARPA, ARP Timeout 04 00 00 Last input 00 04 22, output 00 00 03, output hang never Last clearing of show interface counters never Queueing strategy fifo Output queue 0 40, 0 drops...

Example 242 ipconfig all

Ethernet adapter Local Area Connection You will continue to use many of these tools in the Trouble Tickets to come. Depending on the operating system, other administrative and troubleshooting tools are available. Other administrative and troubleshooting tools include system configuration utilities, startup menus for safe modes, help troubleshooters, Device Manager, Perfmon, Event Viewer, and Task Manager. Many third-party tools are worthy of exploring, too. Consider taking a look at TTCP,...

Example 26 show ip interface ethernet 0 Compared to show interfaces ethernet

Ethernet0 is up, line protocol is up Broadcast address is 255.255.255.255 Directed broadcast forwarding is disabled IP fast switching on the same interface is IP multicast fast switching is enabled IP multicast distributed fast switching is IP output packet accounting is disabled IP access violation accounting is disabled TCP IP header compression is disabled RTP IP header compression is disabled Probe proxy name replies are disabled Network address translation is disabled Ethernet0 is up, line...

Example 28 show cdp Defaults

Sending CDP packets every 60 seconds Sending a holdtime value of 180 seconds Reviewshow cdp neighbors and show cdp neighbors detail output until you are very com-forta ble with tin em, or better yet until you can draw a complete map of your environment. Look bai atExample 2-7 once more. show cdp neighbors shows the local interface and the remote port ID. show cdp neighbors detail shows the local interface as port ID and the remote interface as outgoing po rt.

Example 29 show protocols and show ip protocols

Internet Protocol routing is enabled Ethernet0 is up, line protocol is up Internet address is 192.168.3.1 24 Serial0 is up, line protocol is up Internet oddress is 192.168.2.2 24 Serial1 is administratively down, line protocol is down r2> show ip protocols Codes C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF...

Example 31 Terminal Server Configuration 2511

Hostname ts enable password donna ip subnet-zero ip host r1 2001 1.1.1.1 ip host r2 2002 1.1.1.1 ip host r3 2003 1.1.1.1 ip host r4 2004 1.1.1.1 ip host r5 2005 1.1.1.1 interface Loopback0 ip address 1.1.1.1 255.0.0.0 no ip directed-broadcast transport input all no exec line aux 0 line vty 0 4 exec-timeout 30 0 password donna logging synchronous login end Although c ve you Figures 3-1 throug h 3-3, it is rea a bettar pra ctice to draw your ewn network diagram. S ome fjeopl e prefer columns and...

Example 311 Investigate r4 serial 00 Connection

Interface Serial0 0 Hardware is Quicc 68360 No serial cable attached idb at 0x60AC9A40, driver data structure at 0x60ACEE10 I have an advantage in that I can physically inspect my devices I hope you can do the same if wou are following olong i n yo ur ow n lab. If you look very closely in the picture of my equipment, you may be able to detect the error, but I won't assume that for now. The show controllers commands certainly display the problem here. Alt lyough I did not ap cil'ically Wu strate...

Example 312 After the Physical Cable Swap from serial 01 to serial

Interface Serial0 0 Serial0 1 Serial0 2 Serial0 3 IP-Address 192 . 168.2.2 192.168.6.2 192 . 168.5.2 10.2.2.1 OK Method Status YES manual up YES manual up YES manual up YES manual up manual up r3 copy running-config startup-config After you tiring your hosts back online, the Fast Ethernet 2 0 status should chan get from up down to up up. I give t hat a test in Example 3-13. My Fast Ethernet interface did not come up when I brought the host online, so follow along to determine the issue. The...

Example 314 Testing the Scenario with Ping

Sending 5, 100-byte ICMP Echos to 192.168.4.2, timeout is 2 seconds . Success rate is 80 percent (4 5), round-trip min avg max 4 4 4 ms r1> ping r3 Sending 5, 100-byte ICMP Echos to 192.168.2.2, timeout is 2 seconds Success rate is 100 percent (5 5), round-trip min avg max 28 30 32 ms r1> ping r4 Sending 5, 100-byte ICMP Echos to 10.2.2.2, timeout is 2 seconds Success rate is 0 percent (0 5) r1> ping r5 Sending 5, 100-byte ICMP Echos to 10.1.1.2, timeout is 2 seconds Success rate is 100...

Example 316 r1 2514 Configuration

Ip host r1 192.168.1.1 192.168.2.1 192.168.4.1 10.1.1.1 ip host r2 192.168.4.2 192.168.5.1 192.168.6.1 ip host r3 192.168.2.2 192.168.5.2 192.168.6.2 192.168.3.1 10.2.2.1 Next lo ok at r 2's configuration in Example 3-17. Example 3-17. r2 (2501) Configuration ip host r1 192.168.1.1 192.168.2.1 192.168.4. ip host r2 192.168.4.2 192.168.5.1 192.168.6. ip host r3 192.168.2.2 192.168.5.2 192.168.6. ip address 192.168.4.2 255.255.255.0 Make any adjustments to your r2, and then analyze the r3...

Example 321 Configuring RIPv2

R1(config) router rip r1(config-router) version < 1-2> version r1(config-router) version 2 r1(config-router) end r1 copy running-config startup-config Test and analy ze the results of y out configuration. F irst look a t the outpu t of rhow ip route and rhow ip protoc olr as in Example 3-22 and rest with ping as in Exampl e 3-23. Disglay the routing table, the IP routing protocols, and ensure that rl can ping all other routers before you continue. Compare the results to Figure 3-1 to...

Example 322 Testing and Analyzing rl RIPv2 Router and Protocols

C 192.168.4.0 24 is directly connected, Ethernet1 R 192.168.5.0 24 120 1 via 192.168.2.2, 00 00 13, Serial1 10.0.0.0 8 is variably subnetted, 2 subnets, 2 masks R 10.0.0.0 8 120 1 via 192.168.2.2, 00 00 13, Serial1 C 10.1.1.0 24 is directly connected, Serial0 R 192.168.6.0 24 120 1 via 192.168.2.2, 00 00 13, Serial1 C 192.168.1.0 24 is directly connected, Ethernet0 C 192.168.2.0 24 is directly connected, Serial1 R 192.168.3.0 24 120 1 via 192.168.2.2, 00 00 13, Serial1 r1 show ip protocols...

Example 323 Turning Off Automatic Summarization and Reviewing the Routing Table

R1(config) router rip r1(config-router) no auto-summary r1 copy running-config startup-config r3(config) router rip r3(config-router) no auto-summary r3 (config-router) end r3 copy running-config startup-config r2 show ip route Codes C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS,...

Example 325 Testing and Analyzing Hostto Host Connectivity from hosta Continued

0x1000004 00 10 4b a5 ae 50 Active Routes MS TCP Loopback interface NOC Extranet Access Adapter FE57 5 Ethernet Adapter Default Gateway 192.168.1.1 Persistent Routes None Fow that you h ave a working IP scenario, it's time to investigate some of the underlying components of the TCP IP suite.

Example 326 Steps Performed on hosta While Capturing the Packets with Sniffer

Pinging 192.168.3.5 with 32 bytes of data Reply from 192.168.3.5 bytes 32 time 20ms TTL Reply from 192.168.3.5 bytes 32 time 10ms TTL Reply from 192.168.3.5 bytes 32 time 10ms TTL Packets Sent 4, Received 3, Lost 1 Approximate round trip times in milli-seconds Minimum 10ms, Maximum 2 0ms, Average Pinging 192.168.3.5 with 32 bytes of data Reply from 192.168.3.5 bytes 32 time 10ms TTL Reply from 192.168.3.5 bytes 32 time 10ms TTL Reply from 192.168.3.5 bytes 32 time 10ms TTL Reply from...

Example 327 rl Ethernet 0 IP and MAC Addresses

Ethernet0 is up, line protocol is up Hardware is Lance, address is 0000.0c8d.6705 (bia 0000.0c8d.6705) Description e0 to hosta and hostb Internet address is 192.168.1.1 24 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255 255, load 1 255 Encapsulation ARPA, loopback not set, keepalive set (10 sec) ARP type ARPA, ARP Timeout 04 00 00 Last input 00 00 00, output 00 00 09, output hang never Last clearing of show interface counters never Queueing strategy fifo Output queue 0 40, 0 drops input...

Example 328 Proxy ARP

Interface EthernetO description eO to hosta and hostb ip address 192.168.1.1 255.255.255.0 no ip directed-broadcast end r1 configure terminal r1(config) interface ethernet 0 r1(config-if) no ip proxy-arp r1 (config-if) end interface Ethernet0 description e0 to hosta and hostb ip address 192.168.1.1 255.255.255.0 no ip directed-broadcast no ip proxy-arp end r1 configure terminal r1(config) interface e0 r1(config-if) ip proxy-arp r1 (config-if) end Prior to the thinking outside the box exercise,...

Example 33 r2 Configuration 2501

Router(config) hostname r2 r2(config) enable password donna r2(config) line vty 0 4 r2 (config-line) login r2(config-line) password donna r2(config-line) exit r2(config) interface ethernet 0 r2(config-if) description e0 to rlel r2(config-if) ip address 192.168.4.2 255.255. 00 41 44 LINK-3-UPDOWN Interface EthernetO 00 41 45 LINEPROTO-5-UPDOWN Line protocol r2(config-if) description s0 to r3s0 1 r2(config-if) ip address 192.168.6.1 255.255. 00 42 22 LINK-3-UPDOWN Interface Serial0, r2(config-if)...

Example 333 Cisco Hosts File

Name address lookup uses domain service 192.168.2.2 192.168.5.2 192.168.6.2 192.168.3.1 10.2.2.1 Hosts files on PCs are typical l y fou nd in locations such as Windows, Etc, Winnt System32 Drivers Etc and are named hosts. Reference Figure 3-22 for a sample Windows 2000 hosts file.

Example 336 Plug the Cable Back In and Observe the Results

R1 now I will plug the cable back in r1 show ip route C 192.168.4.0 24 is directly connected, Ethernetl R 192.168.5.0 24 is possibly down, routing via 192.168.4.2, Ethernet1 10.0.0.0 8 is variably subnetted, 3 subnets, 2 masks R 10.2.2.0 24 120 1 via 192.168.2.2, 00 00 13, Serial1 Oct 11 03 26 16 Oct 11 03 26 16 Oct 11 03 26 16 Oct 11 03 26 16 Oct 11 03 26 16 Oct 11 03 26 16 Oct 11 03 26 16 Oct 11 03 26 16 Oct 11 03 26 16 C 192.168.4.0 24 is directly connected, Ethernet1 R 192.168.5.0 24 120 1...

Example 338 ReAddressing and Removing RIP

R1(config-if) ip address 192.168.5.17 255.255.255.240 r1(config-if) ip address 192.168.5.33 r1(config-if) ip add 192.168.5.81 255. r1 copy running-config startup-config r2(config-if) ip address 192.168.5.34 r2(config-if) ip address 192.168.5.49 r2(config-if) ip address 192.168.5.34 r2(config-if) ip address 192.168.5.65 r2 copy running-config startup-config r3(config-if) ip address 192.168.5.82 192.168.5.80 overlaps with Serial0 2 r3(config-if) ip address 192.168.5.50 r3(config-if) ip address...

Example 339 Eigrp Configuration

R1(config) router eigrp 500 r1(config-router) network 192.168.5.0 r1(config-router) network 10.1.1.0 r1 (config-router) end r1 copy running-config startup-config r2(config) router eigrp 500 r2(config-router) network 192.168.5.0 r2 copy running-config startup-config r3(config) router eigrp 500 r3(config-router) network 192.168.5.0 r3(config-router) network 10.2.2.0 r3 (config-router) end r3 copy running-config startup-config r4(config) router eigrp 500 r4(config-router) network 10.2.2.0 r4...

Example 342 Troubleshooting Using Eigrp Show Commands

Interfaces IP-EIGRP interfaces neighbors IP-EIGRP neighbors topology IP-EIGRP Topology Table traffic IP-EIGRP Traffic Statistics r1 show ip eigrp neighbors IP-EIGRP neighbors for process 500 H Address Interface Hold Uptime SRTT RTO Q Seq 12 00 01 15 24 2280 0 38 14 00 33 05 44 2280 0 3 10 00 34 23 25 200 0 35 Xmit Queue Mean Pacing Time Multicast Peers Un Reliable SRTT Un Reliable Flow Timer Routes A.B.C.D Network to display information about active Show only active entries all-links Show all...

Example 345 Trouble Ticket 5 Ping and Trace Output

Pinging 192.168.5.98 with 32 bytes of data Request timed out. Reply from 192.168.5.98 bytes 32 time 20ms TTL 126 Reply from 192.168.5.98 bytes 32 time 10ms TTL 126 Reply from 192.168.5.98 bytes 32 time 10ms TTL 126 Ping statistics for 192.168.5.98 Packets Sent 4, Received 3, Lost 1 (25 loss), Approximate round trip times in milli-seconds Minimum 10ms, Maximum 2 0ms, Average 10ms C > tracert 192.168.5.98 Tracing route to HOSTC 192.168.5.98 over a maximum of 30 hops 1 < 10 ms 10 ms < 10 ms...

Example 36 IP Interface Testing

YES NVRAM up YES manual up YES NVRAM up YES unset administratively down down YES NVRAM administratively down down Interface Serial0 0 Serial0 1 Serial0 2 IP-Address 192.168.2.2 192.168.6.2 192.168.5.2 OK Method Status YES unset down YES unset up YES unset down IP-Address unassigned 10.2.2.2 unassigned IP-Address unassigned unassigned unassigned unassigned 10.1.1.2 unassigned YES unset administratively down down YES manual down down YES unset administratively down down YES unset administratively...

Example 37 Correcting Interface Issues on r1

R1(config) interface serial 1 r1(config-if) description s1 to r3s0 0 r1 (config-f) ip address 192.168.2.1 255.255.255.0 05 16 39 LINK-3-UPDOWN Interface Seriall, changed state to up 05 16 40 LINEPROTO-5-UPDOWN Line protocol on Interface Seriall, changed state 05 16 50 SYS-5-CONFIG_I Configured from console by consolep int brief YES NVRAM up YES manual up YES NVRAM up YES manual up Enter configuration commands, one per line. End with CNTL Z. r1(config) line console 0 r1(config-line) logging...

Example 39 Correcting Interface Issues on r3

OK Method Status YES manual up YES manual up YES manual up YES manual down Example 3-9 indicates that a problem still exists with s0 3 and fa2 0. The other end (host) is not running for my Ethernet hostc connection, but you need to examine further the cause of the down down status for s0 3. Think about what's in your tool bag from the preceding chapter to assist you further in spotting lower-layer problems. Check your thoughts against Example 3-10.

Example 41 r1 Configuration 2514

Router> enable Router configure terminal Router(config) hostname r1 r1(config) enable password donna r1(config) line vty 0 4 r1 (config-line) login r1(config-line) password donna r1(config-line) interface serial 0 r1(config-if) bandwidth 64 r1 (config-if) exit r1(config) ipx Unrecognized command r1(config) end r1 show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.0(5), RELEASE SOFTWARE (fc1) System image file is flash c2500-i 00 03 53...

Example 411 r2 IOS Upgrade from r1 as a TFTP Server

R2(config-if) ip address 192.168.5.34 255.255.255.240 r2(config-if) no shut r2 (config-if) end r2 copy running-config startup-config r2 copy tftp flash This process will accept the copy options and then terminate the current system image to use the ROM based image for the copy. Routing functionality will not be available during that time. If you are logged in via telnet, this connection will terminate. Users with console access can see the results of the copy operation. Address or name of...

Example 412 Preparing r1 and r5 for the Upgrade

R1(config-if) ip address 10.1.1.1 255.255.255.0 r1(config-if) no shut r1 (config-if) end r1 copy running-config startup-config r5(config) interface serial 0 r5 (config-if) clock rate 64000 r5(config-if) ip address 10.1.1.2 255.255.255.0 r5(config-if) no shut r5 (config-if) exit System configuration has been modified. Save yes no y 16384K bytes of processor board System flash (Read Write) The shaded outpbt in ExylT)ple 4-12 iNustrates how to change r5 to rxboot mode so that the Flash is read wr...

Example 414 r1 IPX Configuration

R1(config) line console 0 r1(config-line) logging synchronous r1 (config-line) exit r1(config) enable password donna r1(config) enable secret donna The enable secret you have chosen is the same as your enable password. This is not recommended. Re-enter the enable secret. r1(config-if) description r1e0 to hosta and hostb r1(config-if) ipx network 0516 r1(config-if) no ip address r1(config-if) no shut r1(config-if) interface ethernet 1 r1(config-if) description r1e1 to r2e0 r1(config-if) ipx...

Example 415 r1 Running Configuration

Building configuration Current configuration version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption hostname r1 enable secret 5 1 m0s2 Pq 6.Np0CSzhbQlNy.cnG enable password donna ip subnet-zero ipx routing 0000.0c8d.6705 interface Ethernet0 description r1e0 to hosta and hostb no ip address no ip directed-broadcast no ip route-cache no ip mroute-cache ipx network 516 interface Ethernet1 description r1e1 to r2e0 no ip address no ip...

Example 416 r2 IPX Configuration

R2(config) ipx routing r2(config) interface ethernet 0 r2(config-if) description r2e0 to r1e1 r2(config-if) ipx network 532 r2(config-if) no ip address r2(config-if) no shut r2(config-if) interface serial 1 r2(config-if) description r2s1 to r3s0 2 r2(config-if) ipx network 548 r2(config-if) no ip address r2(config-if) bandwidth 64 r2(config-if) no shut r2(config-if) interface serial 0 r2(config-if) description r2s0 to r3s0 1 r2(config-if) ipx network 564 r2(config-if) no ip address r2...

Example 42 r3 Configuration 3640

Router(config) hostname r3 r3(config) enable password donna r3(config-line) line vty 0 4 r3 (config-line) login r3(config-line) password donna r3(config-line) interface serial 0 0 r3(config-if) bandwidth 64 r3(config-if) clock rate 64000 r3(config-if) no shut access-group Apply an access list to inbound or outbound packets accounting Enable IPX accounting on this interface rip-multiplier Multiple of RIP update interval for aging of RIP routes rip-response-delay Delay in answering RIP on this...

Example 420 rl Testing

Interface IPX Network Encapsulation Status Codes C - Connected primary network, c - Connected secondary S - Static, F - Floating static, L - Local R - RIP, E - EIGRP, N - NLSP, X - External, s - seconds, u - uses, U - Per-user static 7 Total IPX routes. Up to 1 parallel paths and 16 R 548 02 01 via 532.0000.0c38.a05d, R 564 02 01 via 532.0000.0c38.a05d, R 1022 07 01 via 5 8 0.00b0.6481.e300, Internet Protocol routing is enabled Ethernet0 is up, line protocol is up Ethernet1 is up, line protocol...

Example 421 r2 Testing

Up to 1 parallel paths and 16 hops allowed. No default route known. C 532 (NOVELL-ETHER) , Et0 R 516 02 01 via 532.0000.0c8d.6706, 0s, Et0 R 580 02 01 via 532.0000.0c8d.6706, 0s, Et0 R 1011 02 01 via 532.0000.0c8d.6706, 0s, Et0 R 1022 07 01 via 5 64.00b0.6481.e300, 45s, Se0 The problem still exist , for r2 does not see any more netw orks than r1 does . Be cause the missing network i s off of r3, move your testing closer to the problem (as I do in Example 4-22). A layered...

Example 422 r3 Testing

FastEthernet2 0 is up, line protocol is down Hardware is AmdFE, address is 00b0.6481.e300 (bia 00b0.6481.e300) activity IPX RIP routing activity events IPX RIP routing events r3 debug ipx routing events IPX routing events debugging is on r3 plug in the cable and or turn hostc on 03 48 35 IPXRIP 548 FFFFFFFF not added, entry in table is static connected internal 03 48 35 IPXRIP 564 FFFFFFFF not added, entry in table is static connected internal 03 48 36 IPXRIP positing full update to...