Cutover issue of Mailserver on Cisco 6500 switch

[rwaqanitoga]

We had issues cutting over our outgoing(smtp) mailserver on a vlan on 6500 switch.

The cutover looked simple by unplugging the old smtp box and plug in the new smtp box using the ip address of the old smtp server.

We waited for more than half an hour and tracing the maillog but there were no mails passing through...

I suspect could be related to CAM table or arp related issues.

Please help in isolating this issue. I am looking forward to your favorable reply to this matter.

Best Regards,

Ruveni

[Reza Sharifi · Accepted solution]

When you connected the new server, did the link light on the switch turned on?  Is the interface that the server connected to in up an up mode? Are you able to ping the default gateway from the server? Just to be sure you can login to the switch and clear the ARP table for that interface for example:

clear arp interface gigabitEthernet 1/0/1

HTH

[rwaqanitoga]

Hi Sharifi,

Thanks mate! yes light was turned on switchport, server interface was up up, able to ping default gateway...

I guess that was the command I was missing "clear arp int gix/x/x

Our next cutover is shedulled this weekend...I hope with that command we will resolve that 'issue' we faced last time.

I will confirm to you once we complete the next trial of cutover...

Best Regards.

Ruveni

[rwaqanitoga]

Thanks Reza!!

Our cutover in the weekend went smoothlly as we applied that 'clear arp command...""

Cheers mate!!

Ruveni