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

BASIC TROUBLESHOOTING—RIP
look for lights on the interfaces
on
off
check not plugged plug it in layer 1
cabling in
check IP addresses & not fix them layer 2
masks 1 , encapsulation, right
clockrates (sh int and
sh run)
right
Try typing “no shut” worked should be fixed
on the interface
didn’t work
Check routing protocol,
autonomous number,
to see if the networks worked should be fixed Layer 3
are advertised, or for
correct routing info.
(sh run, sh ip route
clear ip route *)
didn’t work
Try to telnet worked should be fixed Layer 7
didn’t work
Time to get help!
1 I know IP addressing is a layer 3 function, but it uses a layer 2 command sh int to view its status.
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