ARP Cache does not flush entries after receiving gratuitious ARP
Issue
-
ARP Cache does not flush entries after receiving gratuitious ARP
-
When we switch between 2 NICs on a Firewall, which is default gateway (Checkpoint), it broadcasts a gratuitious ARP on the same subnet. Some servers seems to not clear the ARP entry and still keep the old MAC, the result is ping time out, the gateway is no more reachable. "Arp -d old_mac" or network service restart solves this issue, but it´s only a work arround.
Environment
- Red Hat Enterprise Linux 5.4
- kernel-2.6.18-128.el5
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.