I have a network in which several site routers send portions of their traffic to an inspection device via GRE tunnel. I am beginning to exceed the capacity of the inspection device.
I could always stand up two inspection devices to divide and conquer but that does not really scale well. Is there a type of load balancer that will terminate my GRE tunnels and then forward the traffic onto the inspection devices (with a balancing algorithm preferably hashed on inside GRE source IP)>
I'm used to load balancers that hold a VIP for say a web server then dole the traffic out to 1/n web servers behind it. The client's think they are talking to a web server but they are talking to an LB. I'm looking for the same concept with GRE tunnels.
Is this possible?
I can not post pictures but the topology is:
https://i.stack.imgur.com/YbLAJ.jpg
Multiple site routers have their own pair of 169 addresses and tunnels.
