• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 799
  • Last Modified:

OSPF failover implementation

I have two WAN links and I'd like to implement failover primary and secondary connection with OSPF. Any tutorials or recommendations? Thx
1 Solution
The only thing you need to do is to configure your metric on the two links, and OSPF will chose the one with the lowest metric as primary, and failover to the other link when the primary is down.

In case your primary link has a higher bandwidth, then this will be automatic - even without manually configuring the metric.

If it is high speed links, you may want to configure your "reference bandwidth" under OSPF. By default this is just 100 Mbps, which is not very useful these days. Better set it to 100 Gbps.

Then the metric for each link is automatically calculated as 100Gbps divided by the bandwdith for each link.

...and Bob's your uncle.
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now