I have a nice post for you folks today. I was asked by a customer to
explain how we could protect against blackholing traffic in a network
that was only configured with static routes. You know those pesky
problems that arise when two routers are connect
I created a video to demonstrate these capabilities. It is much easier to show folks how to do this than paste of bunch of configs into a blog post. The following video is posted on YouTube. I recommend increasing the resolution to at least 480p. Enjoy.
ed on
opposite ends of an Ethernet Switch or wan transport gear. A failure on
one side of the link leaves the link up on the other side. Fiber cuts,
clumsy engineers, failed equipment all can cause a static route
blackhole. So how do we protect against this type of failure? That is a
very good question and the answer is by using BFD (Bidirectional
forwarding detection).I created a video to demonstrate these capabilities. It is much easier to show folks how to do this than paste of bunch of configs into a blog post. The following video is posted on YouTube. I recommend increasing the resolution to at least 480p. Enjoy.
The Configs
Router 3
[edit] jparks@J2350-1-R3# show routing-options static { route 10.0.3.4/32 { next-hop 10.0.2.6; bfd-liveness-detection { minimum-interval 300; multiplier 3;
neighbor 10.0.3.4; local-address 10.0.3.3; } } } router-id 10.0.3.3; autonomous-system 65006;
Router 4
[edit] jparks@J2350-2-R4# show routing-options static { route 10.0.3.3/32 { next-hop 10.0.2.5; bfd-liveness-detection { minimum-interval 300; multiplier 3; neighbor 10.0.3.3; local-address 10.0.3.4; } } } router-id 10.0.3.4; autonomous-system 65116;