Re: OSPF and mass route deletion
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: santi...@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. signature.asc Description: Digital signature
Re: OSPF and mass route deletion
I mean host routes mass removing. Maybe OSPF really isn't best choice for this. Earlier, with quagga, there was no troubles with it. I didn't look deeply to RFC, so I thouht that single LSA can carry multiple prefixes. Possibly quagga just sends packets slower... 14.07.2015 17:47, Olivier Benghozi пишет: OSPF doesn't delete routes, it sends LSAs. It seems that you are redistributing a lot of single IP addresses in OSPF (as external routes). So there's one LSA type 5 for each single redistributed /32. OSPF is not the proper choice for this usecase, and it's not a Quagga or BIRD issue. BGP is the protocol to use for such cases. Many routes, few messages, scalability. Le 14 juil. 2015 à 09:20, Andrew ni...@seti.kr.ua a écrit : 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?
