[Xorp-hackers] OSPF not recomputing routes when neighbor "down"

[Andy Bavier]

Hi,

No problem, I'll file a bugzilla entry.  My actual setup is a bit 
complicated -- I'm running XORP inside UML and using it to control a 
routing overlay built from Click forwarders -- but I'll try to show the 
problem with a simple configuration.  I'm using Point-to-Point links.

Andy

Atanu Ghosh wrote:
> Hi,
> 
> It would really help us to track this problem if you could create a
> bugzilla entry. Additionally a simple configuration file along with a
> way to reproduce the problem would also be very helpful.
> 
> In particular it would be useful to know if the failed neighbour is
> connected by a Broadcast or Point-to-Point link.
> 
>     Atanu.
> 
> 
>>>>>>"Andy" == Andy Bavier <acb at cs.princeton.edu> writes:
> 
> 
>     Andy> Hi, When XORP's OSPF decides a neighbor is "down" because it
>     Andy> has stopped responding to Hello packets, I would expect that
>     Andy> it would recompute routes and send out new LSAs.  However,
>     Andy> this isn't happening: if a neighbor crashes, XORP marks it as
>     Andy> "down" after 30 seconds... but then no other action is taken.
> 
>     Andy> This problem is similar to Bug 387, which handles the case
>     Andy> when the link actually goes down -- but here the link is still
>     Andy> up and the neighbor is down.  The fix to Bug 387 was pretty
>     Andy> simple.  Can someone suggest a similar bug fix for a neighbor
>     Andy> going down?  I'm not familiar enough with the XORP code to
>     Andy> figure out the right change myself.
> 
>     Andy> Thanks, Andy
> 
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