Nortel 8600 commands - How do I locate a MAC?

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I am new to the Nortel world and I am trying to find the port that a
certain MAC is plugged into. Cisco allows you to view the FDB with show
mac-address-table but I can't seem to find anything that leads me to
the port. I've tried show vlan info all, show vlan fdb-entry and a
couple of others with no success.

I would appreciate any advice.
Thanks,


Re: Nortel 8600 commands - How do I locate a MAC?
Quoted text here. Click to load it


Hi Greg

The command you need is shown below but it won't display anything if you
don't tell it the correct VLAN that the MAC address is in.
In the example below I've specified VLAN 1 because I know that the device
with that MAC address is in that VLAN.

If you need to know what VLANs are defined on the unit use "show vlan info
basic" to get a list.

If you're not sure what VLAN the device is in but you know its IP address
you can use the command "show arp info ip_address" like the second example
below.

Hope this helps

Regards

Pete



    CORE-LAN-3:5/show/vlan/info# fdb-entry 1 mac 00:01:e6:4c:fe:f8


============================================================================
====
                             Vlan Fdb

============================================================================
====
    VLAN            MAC                                   QOS    SMLT
    ID   STATUS     ADDRESS            INTERFACE  MONITOR LEVEL  REMOTE
    ------------------------------------------------------------------------
--------
    1    learned    00:01:e6:4c:fe:f8  Port-4/2   false   1      false

    1 out of 669 entries in all fdb(s) displayed.

    CORE-LAN-3:5/show/vlan/info#



    CORE-LAN-3:5/show/ip/arp# info 172.29.253.3


============================================================================
====
                             Ip Arp

============================================================================
====
      IP_ADDRESS       MAC_ADDRESS      VLAN  PORT    TYPE    TTL
    ------------------------------------------------------------------------
--------
    172.29.253.3    00:02:a5:ec:1e:37  29      1/40   DYNAMIC 576

    1 out of 633 ARP entries displayed

    CORE-LAN-3:5/show/ip/arp#



Re: Nortel 8600 commands - How do I locate a MAC?

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One other thing that occured to me after posting the previous reply is that
the Bridge FDB timeout by default  is 300 seconds, so if the device you're
trying to find has not been "seen" within this time it won't appear even if
it's connected.

The other thing that can be confusing is that the ARP Cache timeout is 360
minutes so a device can appear in the 8600's ARP cache long after the FDB
entry for that device has disappeared from the Forwarding table.


Regards

Pete



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