I have two NEXUS 5672UP switches. They have the mac address-table aging-timer set to 1800
If you run the show mac address-table vlan xxxx command the age column either shows 10 or 0
My question when the age-timer reaches 0 is the mac address dropped and required to be relearnt. The reason I ask as the default gateway for the subnet is always 0. I have servers connected to this switch which are losing between them. All interface error counters are 0.
sh mac address-table vlan 1110
Legend:
* - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
age - seconds since last seen,+ - primary entry using vPC Peer-Link
VLAN MAC Address Type age Secure NTFY Ports/SWID.SSID.LID
---------+-----------------+--------+---------+------+----+------------------
+ 1110 0000.0c9f.f456 dynamic 0 F F Po1
+ 1110 0050.568d.0e7f dynamic 0 F F Po1
+ 1110 0050.568d.0e86 dynamic 0 F F Po1
+ 1110 0462.73ad.2c7f dynamic 0 F F Po1
+ 1110 3ca8.2aea.ed18 dynamic 0 F F Po1
* 1110 3ca8.2aeb.7688 dynamic 10 F F Eth1/3
* 1110 3ca8.2aeb.76fc dynamic 10 F F Eth1/6
* 1110 3ca8.2aeb.7818 dynamic 10 F F Eth1/8
* 1110 3ca8.2aeb.7a6c dynamic 10 F F Eth1/7
+ 1110 3ca8.2aeb.7c70 dynamic 0 F F Po1
* 1110 3ca8.2aeb.8808 dynamic 10 F F Eth1/5
* 1110 3ca8.2aeb.89f8 dynamic 10 F F Eth1/9
+ 1110 3ca8.2aeb.8ad4 dynamic 0 F F Po1
* 1110 3ca8.2aeb.8b34 dynamic 10 F F Eth1/4
+ 1110 3ca8.2aeb.8bcc dynamic 0 F F Po1
+ 1110 40f0.786f.c3ff dynamic 0 F F Po1
+ 1110 d89d.6726.6bcd dynamic 0 F F Po1
+ 1110 d89d.6726.6bce dynamic 0 F F Po1
+ 1110 d89d.6726.7c59 dynamic 0 F F Po1
+ 1110 d89d.6726.7c5a dynamic 0 F F Po1
+ 1110 d89d.6726.98b1 dynamic 0 F F Po1
+ 1110 d89d.6726.98b2 dynamic 0 F F Po1
+ 1110 d89d.672a.8709 dynamic 0 F F Po1
+ 1110 d89d.672a.870a dynamic 0 F F Po1
+ 1110 d89d.672a.8741 dynamic 0 F F Po1
+ 1110 d89d.672a.8742 dynamic 0 F F Po1
