An inconsistency in the Network Load Balancing (NLB) configuration may result in inconsistent handling of traffic between the Internal network and the GMA (VLAN 505) network. When a network rule specifying a route relationship is defined between two networks, NLB must be enabled (or disabled) on both networks. To enable NLB for IPsec remote site networks, enable NLB on the network containing the local tunnel endpoint. To enable NLB for VPN site-to-site and VPN client networks, enable NLB on the selected access networks. Alternatively, for the VPN Client network, you can designate a router for routing traffic according to the static address pool.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp