I have problems working with GLBP protocol in my network. I will try explain the scenario.
We have two data links from different ISP´s and each data link is in a router (ISP1 into 1811W and ISP2 into 1841).
I´m doing standard configurations about GLBP, but the internet traffic is instable, some services like citrix, Office Communicator and Exchange every times sign out and after few seconds sign in again.
Acctualy the principle of GLBP is working, when one link fails another get all traffic, but the services like Citrix, Exchange and Office Communicator (all servers not local. I´m in Brazil and the servers in U.S) not working well. I appreciate a lot if anyone can help me with this issue, and sorry about my english.
Have a look at this document. You may need to change the load balacing method and test again.
The MAC address of a host is used to determine which VF MAC address the host is directed towards. This ensures that a host will be guaranteed to use the same virtual MAC address as long as the number of VFs in the GLBP group is constant.
Host dependent load balancing will need to be used when using statefull Network Address Translation (NAT) because it requires each host to be returned the same virtual MAC address each time it sends an ARP request for the virtual IP address
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