[quagga-dev 1395] Re: link-detect issues (not quite working)

Paul Jakma paul at clubi.ie
Wed Aug 11 14:14:44 BST 2004

On Wed, 11 Aug 2004, Vincent Jardin wrote:

> It is too complicate to manage these states into a Kernel (what ever BSD or 
> Linux). It is easy to remove the connected routes, but it is more complicate 
> to restore them.

Hmm, well the events are there, the kernel could remove the connected 
routes. I suspect it's more to do with possible breakage that would 
occur with non-link-running aware apps that expect to be able to send 
packets out a specific interface by specifying the appropriate 
connected address, possibly.

> In fact, I think that the best approach is to stop redistributing 
> the connected routes to the protocols when the link is removed. It 
> means that the connected route should not have the ">" (selected 
> route). Then the routing protocols will stop announcing them.

Could do that, yes.

Note that OSPF, for active links, already takes care of dealing with 
dead-but-up links in the protocol.

> Regards,
> Vincent

Paul Jakma	paul at clubi.ie	paul at jakma.org	Key ID: 64A2FF6A
Second-sytem effect.

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