I have Catalyst1900, Catalyst2900 and Catalyst3500 switches in my LAN. I want to know where is each user. I use command "show mac-address-table" for mac address search. But if the user is inactive during 5 minutes I can't locate it, because mac address absence. This caused by defult mac address aging-time 300 seconds. I set this parameter to maximal value 1000000 seconds for each switch. But mac addresses are aged more rapidly than 11 days. Sometimes 10-15 min. Why? And second question, can spanning tree affect this process somehow?
If there is some problem due to spanning tree convergence,, this start the fast aging time, which flushes all the mac addresss in 15 sec. as part of network convergence. you probably need to check if you are getting the spanning tree tcns.. is portfast is enabled on all server/workstations ports etcc.
Since you know or can tell which vlan the port is located and you can correspond the vlan to the subnet, Try pinging the entire subnet first (direct broadcast). Then try to show the cam table/ mac addres table. It should be there if the device is connected.
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...