[j-nsp] BGP timer

Mark Tinka mark at tinka.africa
Fri May 3 14:47:34 EDT 2024



On 5/3/24 19:54, Lee Starnes wrote:

> Hello Mark,
>
> Thanks for asking. This is eBGP and the issue is that there have been 
> failures whereby the link does not fail, and thus can't track that 
> routes should be removed. BGP session has stayed up in some cases as 
> well, yet no traffic.

Yeah, if the physical media is unable to indicate link-layer failure to 
the system, BFD is probably you best bet at detecting link failure.

Have you worked with your eBGP neighbor (I'm guessing your transit 
provider) to see what they can do to improve link failure detection at 
the link layer? Perhaps avoid an intermediate Ethernet switch between 
both your routers, e.t.c.

Mark.


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