Why next hop self

Let us know what you think. Do you have time for a two-minute survey? Maybe Later. Navigation CLI Explorer. Table of Contents. Rate and give feedback: Feedback Received. Thank You! That's why sometimes we need to change next-hop. For example. But it is not reachable from R2. So in these case we need to declare next-hop self from R1 to R2. Now as an thought exercise for the people that added some nice replies here.

What are the pro's and con's of using next-hop-self compared to putting the external next-hop into IGP? If your IGP get next-hop from external peers then you can't use those routes because its give you inaccessible next hop. That's why you need to change next-hop from external to internal. What I'm saying is that if your next-hop for That's the alternative to next-hop-self.

There are pro's and con's with both methods and that's what I'm looking for. Well, as instructors, we have to do a lot of weird or creative designs to get a message across, or else some of us will end up repeating what we heard without knowing the actual reasons.

If you encounter a technical issue on the site, please open a support case. Communities: Chinese Japanese Korean. Basically if you have an eBGP route that is being introduced to an iBGP network, you must make sure that the next hop address is reachable in the routing table.

If it is not, you would need to do something such as the configuring BGP next-hop-self to make sure that network gets added to the routing table. Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed. November 13, Sign in. Forgot your password? Get help.