CAM table - 2960
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02-05-2010 02:41 AM - edited 03-06-2019 09:35 AM
Hi
How do I identify if my CAM Table is full on Cisco 2960
how many mac address entry can 2960 store
If I have /22 network ; how does it impact 2960 box
We noticed performance degraded for end users?
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02-05-2010 05:25 AM
Hi,
the datasheet says "up to 8000 MAC addresses".
sh mac address-table count
should show you
Total Mac Address Space Available: xxxx
on the last output line.
This works on 3750s, I hope also on 2960s.
HTH,
Milan
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02-05-2010 09:19 AM
Milan is right.
it supports 8024 to be precise.. Please find the sample output from a 2960 switch:
switch1#show mac-address-table count
Mac Entries for Vlan 10:
---------------------------
Dynamic Address Count : 5
Static Address Count : 0
Total Mac Addresses : 5
Mac Entries for Vlan 1:
---------------------------
Dynamic Address Count : 1
Static Address Count : 0
Total Mac Addresses : 1
Total Mac Address Space Available: 8024
how many MACs do you have ? why would you have 8024 entries on one vlan ? 2960 is a layer 2 switch, and i suppose you use it for edge networks.. why would you have a VLAN with /16 subnet ? as per design rules, its good to split this into multiple vlans with lesser subnet masks..
Hope this helps.. all the best
Raj
