I am currently leveraging GLBP--gateway load balancing, on my 4948 cisco switches. This gives me the ability to connect 2 Ethernet cables into my servers, one from one switch and one from another. If one switch fails then the server still has a route out using the other link. This works well on everything but exchange. My exchange server has two nics on it and both are configured with a different ip address (10.10.0.105 and 104). I have send and receive when both nics are active and I can also send and receive if only the nic with 105 is active. I run into a problem when 105 goes down. I can send out but can not receive on 104, any thought as to why this would be happening? I have checked all firewall settings and everything is fine.