I have 2 Cisco 6506. On every on is two Microsoft Exchange connected. The Active Standby Cluster of Microsoft Exchange works fine. But the OWA Frontend Server NLB Cluster (installed on a virtuell Maschine on the Exchange Server) do not work correct.
There is a loadbalancing 40 to 300 session and the failover (Disconnect one Exchange Server) do not work.
I have make 2 entry's on both Cisco6506.
First Entry: arp 172.16.2.66 0100.5e7f.0242 ARPA
Second Entry: mac-address-table static 0100.5e7f.0242 vlan 11 interface GigabitEthernet5/17
This Config Entry are on both Cisco 6506.
The NLB cluster works with Multicast and IGMP.
What is wrong?