Hi, there We met such a problem, while two Cisco 1720 routers and one 3Com router are interconnected via a share HUB, in a single collision L2 as well as L3 domain, the problem is somehow we can't PING the 3Com router from any of Cisco 1720 routers, but the two Cisco 1720 router can PING each other, and we check the ARP table in the two Cisco 1720 routers and they does show up the correct APP entry for that 3Com router, and we have no access to that 3Com router (so we can't check its ARP table), the only thing about the 3Com router is it is correctly configured with IP address.
And after we clear the ARP table in the Cisco 1720 router, then the PING to 3Com router is working but, after some time the PING connectivity between the Cisco 1720 routers and 3Com router was lost, I suspect that is due the ARP problem, (incorrect ARP overwritten, in my mind). Would you give me any hits on this problem without access to that 3Com routers, and solution? I thought to place another Cisco router to replace that share HUB would be able to solve this problem and it'll not be cost effective. Thanks. Best Regards. Leo System Engineer. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51422&t=51422 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
