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New Member

disable mac learning in nexus5000

Hi,

Does any one know if it is possible to disable mac learning on a specific vlan in the nexus 5000?

Thanks,

Benny

4 REPLIES

disable mac learning in nexus5000

I doubt that is possible. Why would you want the nexus to flood all traffic on all ports in a vlan?

What are you trying to accomplish?

Cheers,

Michel

Cisco Employee

disable mac learning in nexus5000

Benny

This feature is currently unavailable in released NX-OS versions.

There are several situations how mac learning will be disabled: when number of learned addresses reach hardware limitation,  when 2 hosts with same mac address found on different interfaces.

New Member

disable mac learning in nexus5000

Hi Oleksandr,

Thank you for this info, it was exactly what I was looking for.

But do you have any updated source for this info? I would like to know where you found it and if it has changed, since this post is quite old.

Cisco Employee

Re: disable mac learning in nexus5000

Hello Oscar,

That was an informatino fomr your development team.

Currently you can check CSCtu33372 which was addresed to implement a feature on nexus 55XX platform which wil disable dynamic mac learn only on vlan where loop is detected.

It's implemented in 5.2(1)N1(1)

HTH,

Alex

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