ARP / Cisco Router Wierdness

2004-06-25 Thread Peter Pauly
This morning while attempting to replace a server with a new machine (same IP address, the old machine was unplugged), The Cisco 2600 router's arp table continued to point to the old DNS server's MAC address. Even after rebooting the new server (Freebsd 5.2.1), the MAC address remained unchanged i

Re: ARP / Cisco Router Wierdness

2004-06-25 Thread Bill Moran
Peter Pauly <[EMAIL PROTECTED]> wrote: > This morning while attempting to replace a server with a new machine > (same IP address, the old machine was unplugged), The Cisco 2600 > router's arp table continued to point to the old DNS server's MAC > address. > > Even after rebooting the new server (

Re: ARP / Cisco Router Wierdness

2004-06-25 Thread Joe O
This behavior is consistent with most IOS based routers I've worked around, they typically hold onto an ARP entry for about 20 minutes before expiring it. On linux I've used a network utility called send_arp that can shoot a user specified gratuitous arp packet at another host on the same layer2 n

Re: ARP / Cisco Router Wierdness

2004-06-25 Thread Stacey Roberts
Hi, - Original Message - From: "Bill Moran <[EMAIL PROTECTED]>" To: To Peter Pauly Date: Fri, 25 Jun, 2004 15:21 BST Subject: Re: ARP / Cisco Router Wierdness > Peter Pauly <[EMAIL PROTECTED]> wrote: > > > This morning while attempting to replace a serv