sh int status
sh vlan br
ping
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PROBLEMS FACED:
1) In the output of sh cdp ne cmd some devices are missing based on L2 diag.
- Because, directly connected interfaces were shutdown.
- based on the L2-diag we know the directly connected devices.
- After using no shutdown on connected interfaces then only directly connected devices appear in sh cdp neigh cmd.
2) un successful of ping cmd
- some times interfaces were shutdown
- some times switches between source & destination have
- required vlans are not created
- in between source to destination every switch must contain corresponding vlan
- check the required vlans & corresponding interfaces by using sh vlan br
- then create vlans according l3-diag
- create vlan around switches from diagrom
- Some interfaces of switches are connected routers but not showed in L3-dag
- easily identified by a straight line connected to 2 or more devices
- some times simply a straight line
- That inter faces are connected to switches