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

duck#show ip interface brief

Interface IP-Address

EthernetO

Ethernetl

LoopbacklO

SerialO

Seriall

10.10.10.1

unassigned

172.16.1.1

172.16.1.10

172.16.1.17

OK? Method Status

Protocol

YES manual up up

YES unset administratively down down

YES manual up up

YES manual up up

YES manual up up duck#show interfaces e0

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)

duck#show interfaces s0

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 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive set (10 sec)

duck#show interfaces s1

Serial1 is up, line protocol is up Hardware is HD64570

Description: duck to swan Internet address is 172.16.1.17/29

MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive set (10 sec)

duck#show protocols Global values:

Internet Protocol routing is enabled Ethernet0 is up, line protocol is up

Internet address is 10.10.10.1/24 Ethernet1 is administratively down, line protocol is down Loopback10 is up, line protocol is up

Internet address is 172.16.1.1/30 Serial0 is up, line protocol is up

Internet address is 172.16.1.10/29 Serial1 is up, line protocol is up Internet address is 172.16.1.17/29

Note the preceding show protocols output. It is quite helpful, because it very quickly shows you v the routine) process is on or off. This command nl so gives you tho line and protokol status, as well a address and mask, all in an easy-to-read format. Example 10-6 illustrates the IP protocols and rou tables on (duck.

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