All,
on my 4510, I have about 36 vlans and 40+ trunks(Cisco 3650, 3750, 2960) on my campus, lately when i bring up a new trunk i lose pings to smaller devices like a PDU mgmt port or thin client or even a printer which some are directly connected to 4510 and some are not. I don't lose an ping on desktops or servers or network hardware.
When i check the mac address-table don't see the devices, only way i can get them back in the network is either reboot the thin client or ping it from the 4510(core switch).
I can i also duplicate this problem, when i clear mac address-table dynamic address i will lose ping.
KEEP IN MIND this problem only starts after a trunk is added or removed. then after about 20 -30 mins i can not duplicate the problem using clear Mac address from the table, and the devices are directly connected to 4510.
checked VTP accros the board and all are correct.
FYI I can not duplicate the problem by clearing arp by ip address.
running dual WS-X45-SUP7-E
bootflash:cat4500e-universalk9.SPA.03.04.00.SG.151-2.SG.bin
any thoughts?
