07-29-2013 03:04 PM - edited 03-07-2019 02:39 PM
Hi, we have a Nexus 5548 in our test/dev environment, but for some reason it isn't learning Mac Addresses. If I submit a "show mac address-table", bothing comes back. We have about 20 nodes on the switch. Should be coming back with something. This is a typical config, nothing fancy. It does have spanning-tree rspd and portfast on the ports. The trunks only allow 2 Vlans.
Can you help explain some reasons why the mac address are not showing? Thanks
07-29-2013 03:53 PM
Chris,
Only a suggestion but can you look at the mac aging timer
show mac-address-table aging-time
The default is 300 secs (5 mins) but may be it has been set to 0
!
mac-address-table aging-time 300
!
will set the default
Worth a look.
Regards,
Alex.
Please rate useful posts.
07-29-2013 03:55 PM
Yeah, thanks, but it's already set to default:
cos-qa-ror10ge03# sho mac address-table aging-time
Vlan Aging Time
----- ----------
112 300
1 300
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