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Verifying That Layer 3 Subinterfaces Are Working
Purpose
After configuring Layer 3 subinterfaces, verify they are set up properly and transmitting data.
Action
- Use the show interfaces command to
determine if you successfully created the subinterfaces and the links
are up:
user@switch> show interfaces interface-name terseInterface Admin Link Proto Local Remote ge-0/0/0 up up ge-0/0/0.0 up up inet 1.1.1.1/24 ge-0/0/0.1 up up inet 2.1.1.1/24 ge-0/0/0.2 up up inet 3.1.1.1/24 ge-0/0/0.3 up up inet 4.1.1.1/24 ge-0/0/0.4 up up inet 5.1.1.1/24 ge-0/0/0.32767 up up
- Use the ping command from a device on
one subnet to an address on another subnet to determine if packets
were transmitted correctly on the subinterface VLANs:
user@switch> ping ip-addressPING 1.1.1.1 (1.1.1.1): 56 data bytes 64 bytes from 1.1.1.1: icmp_seq=0 ttl=64 time=0.157 ms 64 bytes from 1.1.1.1: icmp_seq=1 ttl=64 time=0.238 ms 64 bytes from 1.1.1.1: icmp_seq=2 ttl=64 time=0.255 ms 64 bytes from 1.1.1.1: icmp_seq=3 ttl=64 time=0.128 ms --- 1.1.1.1 ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss
Meaning
The output confirms that the subinterfaces are created and the links are up.
