Commands to Monitor Link and Interface Status
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Verify that the links are up:
show ip int brief Interface IP-Address OK? Method Status Protocol Te0/0/0 unassigned YES NVRAM up up Te0/0/1 unassigned YES NVRAM up up GigabitEthernet0/0/0 unassigned YES NVRAM up up GigabitEthernet0/0/1 unassigned YES NVRAM up up GigabitEthernet0/0/2 unassigned YES NVRAM up up GigabitEthernet0/0/3 unassigned YES NVRAM up up GigabitEthernet0/0/4 unassigned YES NVRAM up up GigabitEthernet0/0/5 10.56.197.144 YES NVRAM up up
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Verify that traffic is arriving to the interfaces:
show interfaces summary
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Verify the interface counters:
show interfaces <interface-name>
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Verify that traffic is classified by NBAR (CBAR):
sh ip nbar protocol-discovery stats packet-count