Question regarding limited websites available after ASA move and no address changes

[c.campadore]

I just completed a relocation of my core dtaa center network, whic included numerous vitualized servers, plus Cisco 3750 switches and ASA. The addressing did not change as this was internal to our overall network. After the move however some websites are not available. My first thought was a double NAT, but this does not seem to be the case. I am looking for other areas I shoudl focus on in resolving this issue.

Thanks!

Craig

[Anu M Chacko]

Hi Craig,

This could be an ARP issue. The MAC addresses of the servers might have changed, thus making them inaccessible. It would be a good idea to ask your ISP to clear the arp cache on the upstream router. OR Read the following document to understand what can be done on the ASA so that the servers are accessible:

https://supportforums.cisco.com/community/netpro/security/firewall/blog/2010/10/27/asapix-proxy-arp-vs-gratuitous-arp

Let me know how it goes.

Regards,

Anu