WAN Link Redundancy
Posted on 2012-04-03
Hello Experts. We have an issue with circuit redundancy and I was hoping for a little help. We have 2 layer2 p2p circuits (different providers) between our main datasite and our new colo. We are currently using a port-channel combining both circuits between the 2 sites. It works great until one of the carriers falls offline (maintenance, service outage, etc.) The ports on both end see themselves as up and continue to try and send packets across the dead links. I called Cisco and they recommended flex links. These sound great but we would still have the issue of the ports not detecting when the carrier is down. Does anyone have an idea whether an IP SLA solution can exist at layer 2 or if we should purchase a device (wan accelerator?) that can detect carrier outages on a circuit?
Thank you in advance for the assistance.