23.3.3 Checking MAC address learning count

The show mac-address-table command (with the learning-counter parameter specified) can be used to display the number of dynamic entries registered by MAC address learning for each port, and to check the number of terminals connected per port. and to check the number of terminals connected per port.

When link aggregation is used, the same value is displayed for all ports in the same channel group. The displayed value is the number of learned addresses in the channel group.

Figure 23-3: Result of executing show mac-address-table command (specifying learning-counter parameter)
> show mac-address-table learning-counter port 1/0/1-12 Date 20XX/10/14 12:09:40 UTC Port counts:12 Port Count Movement Detect 1/0/1 3 0 1/0/2 1000 1000 1/0/3 0 0 1/0/4 50 0 1/0/5 45 0 1/0/6 0 0 1/0/7 22 50 1/0/8 0 0 1/0/9 0 0 1/0/10 0 0 1/0/11 0 0 1/0/12 0 0 >

Figure 23-3: Result of executing show mac-address-table command (specifying learning-counter parameter)

> show mac-address-table learning-counter port 1/0/1-12
Date 20XX/10/14 12:09:40 UTC
Port counts:12
Port       Count      Movement Detect
1/0/1          3                    0
1/0/2       1000                 1000
1/0/3          0                    0
1/0/4         50                    0
1/0/5         45                    0
1/0/6          0                    0
1/0/7         22                   50
1/0/8          0                    0
1/0/9          0                    0
1/0/10         0                    0
1/0/11         0                    0
1/0/12         0                    0
>

By executing the show mac-address-table command with learning-counter and vlan parameters specified, the number of dynamic entries is displayed for each VLAN.

Figure 23-4: Result of executing show mac-address-table command (learning-counter and vlan parameter specification)
> show mac-address-table learning-counter vlan Date 20XX/09/24 20:00:57 UTC VLAN counts:4 ID Count Maximum 1 3 - 100 1000 - 200 0 - 4094 90 -