Problems establishing two IPSEC SA’s (Security Associations) between the same two hosts using different subnets when using 2600 series routers.
Vigor2600 is an old model which does not support Multiple SA feature.
To support multiple VPN networks between two Vigor routers, you do not need to use multi-SA features. Instead you may use the ‘More’ function to add static routes, which is in the LAN to LAN profile
The following example shows how to use the More function:
Suppose you have the following topology.
You have the following setup:
In 2910’s lan2lan profile:
Remote Subnet: 172.17.1.0/255.255.255.0
More window: 172.17.5.0/24
In 2600’s LAN to LAN profile:
Remote subnet: 192.168.1.0/255.255.255.0 More window: 192.168.5.0/24