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vaib7av.shirkul
Beginner

MAC address Learning

Hello All,

I am using Cisco 4506-E switch in campus as below config,

no ip routing

bootflash:cat4500e-ipbasek9-mz.122-54.SG1.bin

So the issue is, on that switch there are access readers are connected, so when I try to find the interface using show mac add add XXXX.XXXX.XXXX command, it is not showing any learned mac address. Normally I am using below method to find out the interface.

Let say I want to find 172.16.2.11 host interface

SW#p 172.16.2.11

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 172.16.2.11, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

SW#sh ip arp 172.16.2.11

Protocol  Address          Age (min)  Hardware Addr   Type   Interface

Internet  172.16.2.11             0   0011.8562.5997  ARPA   Vlan1

SW#sh mac add add 0011.8562.5997

Unicast Entries

vlan   mac address     type        protocols               port

-------+---------------+--------+---------------------+--------------------

   1    0011.8562.5997   dynamic ip,ipx,assigned,other GigabitEthernet1/1

and another issue is when I issue the show mac address learning command on switch it says,

SW#Learning disabled on vlans:

then I entered the below command on switch,

SW(config)#mac address-table learning vlan 1

still it is showing " Learning disabled on vlans: "

So what is the reason for that behavior of switch?

Thanks,

1 ACCEPTED SOLUTION

Accepted Solutions

The " Learning disabled on vlans: " means that the mac address learning is enabled on all VLANS.

View solution in original post

1 REPLY 1

The " Learning disabled on vlans: " means that the mac address learning is enabled on all VLANS.

View solution in original post