We have started deploying Cisco 9200 switches. I have noticed that the mac address-table does not work on some of them. I have a stack of 2 switches and can only see mac addresses on one of the switches even though there are active connections on both switches. We also have a single switch and it does not display any dynamic mac addresses at all. For this switch I was able to go to an upstream switch and show mac addresses for what should be on the 9200 switch and am able to ping the IP addresses associated with those mac addresses. When I go back to the 9200 switch and use the command show mac address-table dynamic it still shows no addresses. Here is the version information for this switch:
Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 56 C9200-48P 16.10.1 CAT9K_LITE_IOSXE BUNDLE
Does anyone have any suggestions? We have other 9200 switches that seem to be showing all of the dynamic mac addresses without problems.
