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New Member

C3750-48TS CAM size

Hi everyone!

I've got stack of 9 C3750-48-TS. Some PC's have connectivity problem.

For example: I see interface status connected but I don't see PC's MAC-address on this interface.

When I use

show mac-address-table count

command, I've got:

Total Mac Address Space Available: 0

I guess here the problem is. May be it's possible to increase CAM table size somehow?

4 REPLIES
New Member

Re: C3750-48TS CAM size

Hi everyone!

I've got stack of 9 C3750-48-TS. IOS 12.2.37-SE (ADVANCED IP SERVICES). Some PC's have connectivity problem.

For example: I see interface status connected but I don't see PC's MAC-address on this interface.

When I use

show mac-address-table count

command, I've got:

Total Mac Address Space Available: 0

I guess here the problem is. May be it's possible to increase CAM table size somehow?

Super Bronze

Re: C3750-48TS CAM size

"May be it's possible to increase CAM table size somehow?"

http://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09186a008081df5c.html

PS:

Does your L2 domain extend beyond just the one stack of 9?

New Member

Re: C3750-48TS CAM size

This stack is a part of L2 domain. If I understood you right.

Sorry my bad English, it isn't my native language.

New Member

Re: C3750-48TS CAM size

I found solution by decreasing mac-address table aging time from 300 sec to 60 sec.

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