Explaining Trunk Link Problems
Tue, 05 Jul 2016 | Switched Networks
Trunks can be configured statically or autonegotiated with DTP. For trunking to be autonegotiated, the switches must be in the same VTP domain. Some trunk configuration combinations will successfully configure a trunk, some will not. Will any of the above combinations result in an operational trunk These elements determine whether or not an operational trunk link is formed and also determine the type of trunk the link becomes the trunking mode, the trunk encapsulation type, the VLAN Trunk...
Adjacency Information
Sun, 26 Jun 2016 | Switched Networks
Switch show adjacency gigabitethernet 9 5 detail Protocol Interface Address 06(11) 504 packets, 6110 bytes 00605C865B82 000164F83FA50800 ARP 03 49 31 Switch show adjacency type mod port port-channel number detail internal summary Each time an adjacency entry is created, a Layer 2 data link layer header for that adjacent node is precomputed and stored in the adjacency table. This information is subsequently used for encapsulation during CEF switching of packets. Output from the command show...
Are CEF tables complete and accurate
Sun, 10 Apr 2016 | Switched Networks
CEF is the fastest means of switching Layer 3 packets in hardware. The CEF tables stored in hardware are populated from information that is gathered by the route processor. Troubleshooting CEF operations therefore has two primary steps. Ensure that the normal Layer 3 operations on the route processor are functioning properly so that the switch tables will be populated with accurate and complete information. Verify that information from the route processor has properly populated the FIB and...
- A switch and a router
- About Ether Channel Configuration Commands
- Adding New Switches to an Existing VTP Domain
- Allocate IP address spaces in contiguous blocks Allocate one IP subnet per VLAN
- Associate Switch Ports with the VLAN
- Associate the access switch port with a VLAN
- BPDU Fields Associated with Root Bridge Selection
- Building Distribution submodule also known as Building Distribution layer
- Campus Backbone submodule also known as Building Core layer Provides
- Campus Infrastructure Module
- CEFBased MLS Lookups
- CEFBased MLS Operation
- CEFBased Multilayer Switches
- Cisco Icons and Symbols
- Cisco IOS Interface
- Cisco IOS software is standard for most other switches and for Layer 3 configuration on the modular switches
- Client
- Common Problems with VTP Configuration
- Comparing ISL and 8021Q
- Configuration Revision Number
- Configure Ether Channel
- Configured by issuing the spanningtree portfast command
- Configures Ether Channel load balancing
- Configuring a Port for ISL Trunking with No DTP
- Configuring a Routed Port
- Configuring a VTP Management Domain
- Configuring InterVLAN Routing Through an SVI
- Configuring Layer 2 Ether Channel
- Configuring Layer 3 Ether Channel
- Configuring Port Fast
- Configuring the Root Bridge
- Configuring VTP on a Switch
- Course Flow
- Course Goal and Objectives
- Describing 8021Q Trunking
- Describing CEF Configuration Commands
- Describing InterVLAN Routing Using External Router Configuration Commands
- Describing Issues with 8021Q Native VLANs
- Describing Local VLANs
- Describing Port Fast
- Describing Pvrst Implementation Commands
- Describing RSTP Port States
- Describing the Extended System ID
- Describing Transparent Bridges
- Describing VTP Operation
- Determining Equipment and Cabling Needs
- Display spanning tree mode is set to PVRST
- Displaying Hardware Layer 3 Switching Statistics
- Displays interface information
- Distributed Hardware Forwarding
- Does not modify the original frame
- Dynamic Access Port Association
- Dynamic Trunk Negotiation Protocols
- ECNM Functional Areas
- Enterprise Composite Network Model
- Establishes primary and secondary roots for MST instance
- Ether Channel
- Ether Channel Guidelines
- Ether Channel Load Balancing Characteristics
- Example Displaying Detailed MSTP Information
- Example Displaying General MSTP Information
- Example Displaying InterVLAN Configuration Information
- Example Displaying MSTP Information for a Specific Instance
- Example Displaying MSTP Information for a Specific Instance and Interface
- Example Displaying MSTP Information for a Specific Interface
- Example Displaying Routing Table Information
- Example Endto End VLAN Implementation
- Example Layer 2 Topology Negotiation
- Example of a Switch Overwriting an Existing VTP Domain
- Explaining MSTP
- Explaining Multilayer Switching
- Extended System ID in Bridge ID Field
- FIB Table Updates
- Forming an Association with the Root Bridge
- Guidelines for Configuring Ether Channel
- Guidelines for Configuring Ether Channel Cont
- High latency over Layer 2 switching
- Highspeed scalability
- Identifying the Rstp Tcn Process
- IEEE Documents
- If users are moved within the campus their VLAN membership remains the same
- Implement Switch and VLAN Security Measures
- Implement VLAN and switch security
- Implementing InterVLAN Routing
- Implementing Pvrst Commands
- Implementing RSTP
- Implementing VLANs
- Implementing VTP in the ECNM
- Improves flexibility and increases efficiency
- Integration of networked resources and information assets that have been largely
- Interacting Between MST Regions and 8021D
- Interconnection Technologies
- Interface fa01
- Interface Modes
- InterVLAN Routing on External Router 8021Q Trunk Link
- InterVLAN Routing on External Router ISL Trunk Link
- IP Unicast Frame and Packet Rewrite
- ISL Encapsulation
- ISL Header
- ISL Trailer
- ISL Trunk Configuration
- Large amount of unknown MAC unicast traffic
- Layer 2 Switch Forwarding Process
- Layer 2 Switching
- Layer 3 SVI
- Logical Packet Flow for a Multilayer Switch
- Masks used to wildcard some content fields
- Module Objectives
- Module Self Check - 2 3 4
- Module Summary
- Modules in the Enterprise Campus
- Network Traffic Types
- Nonhierarchical Network Devices
- Note Table assumes DTP is enabled at both ends show dtp interface to determine current setting
- Objectives - 2 3 4 5 6 7 8 9 10
- Of traffic
- On the Cisco Catalyst 3550 switch
- Overview - 2 3 4 5 6 7 8 9
- Places a unique identifier in each frame Functions at Layer
- Preventing Bridge Loops
- Priority Field in the BPDU
- Proposal or agreement takes place between A and B
- Q Trunk Configuration
- References - 2 3
- Resolving Trunk Link Problems
- Rewritten IP Unicast Packet
- Root Bridge Selection
- Routed Ports on a Multilayer Switch Cont
- Rstp Bpdu Flag Byte
- RSTP Link Types
- RSTP Port Roles
- Scalable design
- Selecting the Designated Port
- Sends advertisements on trunk ports only
- Servers not centrally located - 2
- Single trunk link carries traffic for multiple VLANs to and from router
- Spanning Tree Communication
- Spanning Tree Operation
- Spanning Tree Path Cost
- Spanning Tree Port States
- Spanning Tree Protocol Root Port Selection
- Student Guide
- Summary - 2 3 4
- Summary Cont 5 6 7 8 9 10 11 12 13
- SVI on a Multilayer Switch
- Switchport Mode Interactions
- Test VLAN Connectivity
- The 8021Q Tagging Process
- The STP Root Bridge
- The VTP Domain
- Topology Changes in STP
- Traffic Path for IP Multicast
- Traffic Path for IP Telephony
- Trunking Configuration Commands
- Verify Layer 3 Switching
- Verify Switch Port Configuration
- Verify the trunk configuration
- Verifying a 8021Q Dynamic Trunk Link
- Verifying CEF
- Verifying InterVLAN Routing
- Verifying ISL Trunking
- Verifying MSTP Cont
- Verifying PVRST
- Verifying the 8021Q Configuration
- Verifying the Access VLAN Configuration
- Verifying the VTP Configuration
- VLAN association table
- VLAN Configuration Modes - 2
- VLAN Implementation Commands
- VLAN Ranges
- VLAN Trunking Protocols
- VLANs and the Logical Network
- Volume
- VTP Advertisement Types
- VTP Configuration Commands
- VTP in the Campus Infrastructure Module
- VTP Versions
