OSPF and mass route deletion

[Andrew]

18.07.2015 00:36, Ondrej Zajicek пишет:
> 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.
>
Maybe it'll be good to add some delay (for ex., 10ms) before flush LSA 
will be sent?