We have problem of ARP cache on Core sw 6506 . Topology for this is as per attachment.
Problem is : The pcs which are turned off for 3- 4 hour can not communicated. from this PCs some of Devices and some of Servers also can not pinging . Some of PCs have an error : Reply from x.x.x.x(Gateway):TTL expires in transit.
Now if i ping this effected PC from MSFC than its works well. Before it i have checked sh arp | i x.x.x.x ( PC Ip address ) than I can not find it. But After pinging from MSFC i can found in ARP list. So I suspect it is due to ARP cache.
I had tried to clear all arp but the problem is still exist.
This problem is in all PCs with static IPs as in PCs with DHCP - Continuous ly communicated so not isolated.
As a temp Solution we have rebooted nboth the core sw and removed one sup card from both the end.
But reboot Sw is not the solution.
So pls help me to solve the problem :
Pls give me the action plan to solve - to troubleshoot the problem.
I am here attaching the Dia.
Pls help me soon.