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

outer#sh frame map
Serial0/0 (up): ip 192.168.1.1 dlci 16(0x10,0x400), dynamic,
broadcast,, status defined, active
router #sh 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, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
C 2.0.0.0/8 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Serial0/0
Ok…we can take a hint here…with our show frame map we see we are expecting
dynamic routing to take place. But we don’t see any routes learned via dynamic
routing in our sh ip route. So let’s check our router config. We find no routing
protocol. Therefore we add in the same routing protocol that is enabled on the
other side:
router(config)#router eigrp 38
router(config-router)#network 192.168.1.0
router(config-router)#network 1.0.0.0
So what have I learned here?
Nothing really glamorous just frame relay operation and troubleshooting. Again it is
easy when you know how. Unlike the other troubleshooting labs this one relies more
upon over-all troubleshooting commands (like show controllers and sh ip route) than
upon specific frame-relay only troubleshooting commands. Keep in mind that your
problem may not be frame-relay related at all…it could be host names, ip addresses,
etc. If you really, really get stuck, then save your configs, turn everything off and go
do something for an hour or so. A clear head can really help in troubleshooting.
411