[c-nsp] NCS-5501 - EVPN L2VPN BVI mac-address weirdness

James Bensley jwbensley+cisco-nsp at gmail.com
Tue Dec 21 02:26:50 EST 2021


Hi Drikus,

Did you ever resolve this?

We saw issues with MAC addresses on NCS55K too, but not related to EVPN.

For example, one can use the commands 'interface foo; mac xxxx.xxxx.xxxx" to set a custom MAC on a physical interface, XR commits the config but on these Broadcom chips it doesn't actually do anything. CLI output shows the custom MAC but a packet capture shows the BIA.

We had another issue with the MAC address of CDP/LLDP frames addresses on bundle interface (I can't remember the exact details right now, but I think the source MAC address of these frames sometimes had the logical bundle MAC and sometimes had the member link MAC, and it was inconsistent).

So it seems these chips have issues with MAC address consistency. I'm wondering if there is some relation to what you are seeing.

Cheers,
James.


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