Learning by Doing: CISCO Certified Network ... - SCN Research

patrice(config)#int bri0/0
patrice(config-if)#dialer idle-timeout 20
patrice(config-if)#dialer wait-for-carrier-time 10
patrice(config)#ip route 2.0.0.0 255.0.0.0 10.0.0.2 150
williams(config)#int bri0/0
williams(config-if)#dialer idle-timeout 20
williams(config)#ip route 1.0.0.0 255.0.0.0 10.0.0.1 150
11. Reconnect the frame relay network. Trace the route to the loopback on
williams. You should see:
patrice#traceroute 2.2.2.2
Type escape sequence to abort.
Tracing the route to 2.2.2.2
1 williams (192.168.1.2) 32 msec * 28 msec
patrice#
Notice how we are getting to the loopback through the frame relay network. Now
let’s unplug the frame line on patrice (to simulate a network failure) and re-trace
route to our loopback again. We expect to see it route through the ISDN network
(10.0.0.2) after it comes up.
patrice#traceroute 2.2.2.2
Type escape sequence to abort.
Tracing the route to 2.2.2.2
1 10.0.0.2 16 msec 16 msec *
patrice#
Challenge Lab or Supplemental Activities:
1. Add PPP as an encapsulation. Use PAP or CHAP for authentication.
2. Switch address schemes to a pure Class “B” network.
3. There are many ways to perform backups: using dynamic floating routes, static routes
with “backup” commands, etc. Try repeating this lab using different techniques.
4. Which works best and why? Did I use it here or mix it up?
5. Try this lab a bit differently: main ISDN with frame relay backup.
6. Try this lab a bit differently: main ISDN with ISDN backup.
7. Try this lab a bit differently: main frame Relay with frame relay backup.
8. If you have the equipment, then go back and forth between ADTRAN’s and MERGE
boxes for ISDN and back and forth between routers and ADTRAN’s for frame relay.
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