Can ping from outside, just not inside

[tglidewell]

I can ping from Server 1 on Subnet A, across the WAN, to Server 2 on Subnet B with no problems. Full response, no lost packets. But when I try to ping Server 2 on Subnet B from Server 3 on Subnet B, I get a reply on the first packet, then the rest time out.

At first I thought it was a Server 2008 thing, but I have the same issue trying to reach my Server 2003 box. I have replaced the switch, but I'm getting the same errors.

[lamav]

Hi:

Please make sure that each box on subnet B has the same network mask configuration.

What kind of switch are you using?

Victor

[tglidewell]

WS-C3560-24PS

I will verify the subnet mask right now.

Thanks.

[lamav]

Please verify the integrity of the servers NIC connections to the switchports. Check for erros on the switchports, too.

Check the log of the switch for more clues...

Victor