Ccna routing and Switching Complete Study Guide

Verifying GRP Tunnels

As usual I’ll start with my favorite troubleshooting command, 

show ip interface brief

.

Corp#

sh ip int brief

Interface        IP-Address      OK? Method Status                Protocol

FastEthernet0/0  10.10.10.5      YES manual up                    up

---

924

 

Chapter 21 

■

  Wide Area Networks

Serial0/0        63.1.1.1        YES manual up                    up

FastEthernet0/1  unassigned      YES unset  administratively down down

Serial0/1        unassigned      YES unset  administratively down down

Tunnel0          192.168.10.1    YES manual up                    up

In this output, you can see that the tunnel interface is now showing as an interface on 

my router. You can see the IP address of the tunnel interface, and the Physical and Data 

Link status show as up/up. So far so good. Let’s take a look at the interface with the 

show 

interfaces tunnel 0

 command.

Corp#

sh int tun 0

Tunnel0 is up, line protocol is up

  Hardware is Tunnel

  Internet address is 192.168.10.1/24

  MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,

     reliability 255/255, txload 1/255, rxload 1/255