Avaya G430 Manual page 531

For two routes of equal cost to the same destination, one through the Primary Main Office and
one through the Backup Main Office, OSPF will automatically distribute traffic through both
routes, effectively sharing the load between routes.
Hub and spoke with hub redundancy/load sharing using GRE
Configuring VPN hub redundancy and load sharing topologies using GRE
Procedure
1. Configure the Branch Office as follows:
a. VPN policy is configured on the Internet interface egress as follows:
b. An access control list (ACL) is configured on the Internet interface to allow only
Administering Avaya G430 Branch Gateway
GRE Traffic from the local tunnel endpoint to remote tunnel endpoint 1 ->
encrypt, using IPSec tunnel mode, with the remote peer being tunnel endpoint
1
GRE Traffic from the local tunnel endpoint to remote tunnel endpoint 2 ->
encrypt, using IPSec tunnel mode, with the remote peer being tunnel endpoint
2
the VPN / ICMP traffic. See
topologies on page 532 for configuration settings.
For information about using access control lists, see
page 557.
VPN hub redundancy and load sharing
IPSec VPN
Policy lists on
October 2013 531