Re: Detecting static route availability [Was: Detecting link state, FreeBSD]

2010-11-04 Thread Matthew Walster
The obvious way would be to use a FHRP such as VRRP or CARP, alternatively use something like RIP in receive only mode. There has to be a decent reason to use that though! Matthew Walster On 4 Nov 2010 16:16, "Stéphan Kochen" wrote: On do, 2010-11-04 at 10:24 +0100, Ondrej Zajicek wrote: > I wo

Detecting static route availability [Was: Detecting link state, FreeBSD]

2010-11-04 Thread Stéphan Kochen
On do, 2010-11-04 at 10:24 +0100, Ondrej Zajicek wrote: > I would suggest to use some shell/perl script that ping to the gateway > and according to its reachability it will enable/disable static > protocol (with routes using that gateway) in BIRD. While we're on this topic... I'm facing a similar

Re: Detecting link state, FreeBSD

2010-11-04 Thread Ondrej Zajicek
On Thu, Nov 04, 2010 at 08:25:34AM -0700, Mahlon E. Smith wrote: > > Detecting a link state is crude, because there might be many > > other kinds of problems that does not change link state. > > Agreed, although I'd maintain that in no case should a lack of link be a > valid condition for bird to

Re: Detecting link state, FreeBSD

2010-11-04 Thread Mahlon E. Smith
On Thu, Nov 04, 2010, Ondrej Zajicek wrote: > > Although i agree with Joakim Tjernlund and others that link state change > detection is useful to get faster response to internal network > unreachability. I think that in your case you would need something > slightly different. > > I understand tha

Re: Detecting link state, FreeBSD

2010-11-04 Thread Ondrej Zajicek
On Wed, Nov 03, 2010 at 07:39:48AM -0700, Mahlon E. Smith wrote: > On Tue, Nov 02, 2010, Ondrej Zajicek wrote: > > > BIRD currently does not check or use link up/down state. OSPF routers > > generally check reachability using HELLO packets, not by reported link > > state, although sometimes this i