Port mapping on 6500 switch

Unanswered Question
Mar 24th, 2010


I am trying to map  a port to Mac-add but i dont get any ports for a specific Mac-add

Here are the steps i do

Step 1. ping the server --------- Successfull

Step 2. sh ip arp  -------------> this gives me the Mac-add of the server

Step 3. sh mac-address-table address 0014.sd12.ec02    ------------------> I dont see any ports when i run this command

Can anybody explain why this is happening when i can ping the server form the switch


I have this problem too.
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Kevin Brennan Wed, 03/24/2010 - 07:03


Are you sure that is the correct mac address?

the mac can only contain A to F and 0 to 9 - not "s"


gurkamal01 Wed, 03/24/2010 - 07:11

Hi Brennan,

The Mac-add i entered is just an example

I copy the Mac-add from Show ip arp command and enter it into step 3 but no ports


Kevin Brennan Wed, 03/24/2010 - 07:14


Is it a Microsoft NLB address? or anything similar?

Can you source a ping from to one of your switches SVI's, and then search for it's mac address?


gurkamal01 Wed, 03/24/2010 - 12:37


Yes it an Linux Exagrid backup cluster

why is the switch behaving this way for a cluster



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