OSPF and mass route deletion

[Ondrej Zajicek]

On Tue, Jul 14, 2015 at 10:20:22AM +0300, Andrew wrote:
> When routes are deleted (for ex., terminating a lot of PPP tunnels for some
> reason in same time), it seems like each removed route is sent into separate
> OSPF packet that causes troubles with OSPF in some cases (for ex., there's
> troubles with old quagga).
> 
> Is there a possibility to add some rate-limiting (for ex., limit to 10
> messages per second), and aggregate separate 'route deleted' messages to one
> packet?

AFAIK, multiple flush LSAs can be packed to one LSA when flushed together
(i.e. the routes are deleted together), but there is no time-limit. If
these routes are deleted as separate (but immediate) events, then it is
possible that the OSPF packet with just one flushed LSA  is sent before
waiting for next route delete (and therefore next flushed LSA.

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
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