Re: Request to OpenBSD Dev's - Beer on offer
On 29/10/13 18:29, rivo nurges wrote: Hi! Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. I'v had plan to do it for ages. If noone beats me, I'll start coding soon. Great! We'll send you a big selection of fancy beers and/or champagne for your time. Let me know how you get on and I can help test it. I'm sure there are many others here who would also be happy to help test. And let me know if there is anything you want in the mean time, maybe some fancy hot chocolate/coffee to keep you going now the cold months are here.. :) Cheers, Andy.
Re: Request to OpenBSD Dev's - Beer on offer
Yea its 24.. Would even be happy to offer some champers.. I think this is more of a Maudite crowd.. Connoisseurs on here... As I understand it you would need to write a small daemon to do the BFD state monitoring for the transmission and reception of the heartbeats with various peers. The protocol is fairly simple so for an experienced dev this should be easy. Then in OpenBGPD you would need to have a way of gracefully and forcefully immediately shutting down the BGP neighbor that matches the BFD peer. This could be achieved by simply having the BFD daemon call 'bgpctl neighbor $bfdpeer down' It is not so important for OSPF as that already has fast convergence time with fast hello's etc.. But for BGP this would make a world of difference to remove the BGP routes immediately (in less than a second) as soon as the BGP neighbor goes down/becomes unreachable (even if not a direct link (multi-hop etc)). On 28/10/13 21:10, Dan Farrell wrote: I'm not sure how much a crate is, but if it's a case (24 bottles), then I'll throw in a case as well for this work. Blanche de Chambly, anyone? Or is this more a Maudite crowd? Sincerely, Dan Farrell On Mon, Oct 28, 2013 at 12:54 PM, Andy a...@brandwatch.com mailto:a...@brandwatch.com wrote: Hi all, Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. The protocol itself seems pretty simple and provides a sub-second keep-alive mechanism to monitor links for routes. E.g. Upon BFD failure BGP or OSPF can be torn down etc thus allowing for sub-second re-convergence of i/eBGP! I can only offer a crate of beer to anyone who has the skills and is willing :) '+1's welcome from others who would be interested to show signs of support/interest.. Cheers, Andy.
Re: Request to OpenBSD Dev's - Beer on offer
Code snippets can be seen on; http://sourceforge.net/projects/kbfd/ http://sourceforge.net/projects/bfdd/ Editing these to compile and work on OpenBSD and run 'bgpctl neighbor $bfdpeer down' etc is beyond my skills.. Thanks for reading, Andy. On Tue 29 Oct 2013 11:16:20 GMT, Andy wrote: Yea its 24.. Would even be happy to offer some champers.. I think this is more of a Maudite crowd.. Connoisseurs on here... As I understand it you would need to write a small daemon to do the BFD state monitoring for the transmission and reception of the heartbeats with various peers. The protocol is fairly simple so for an experienced dev this should be easy. Then in OpenBGPD you would need to have a way of gracefully and forcefully immediately shutting down the BGP neighbor that matches the BFD peer. This could be achieved by simply having the BFD daemon call 'bgpctl neighbor $bfdpeer down' It is not so important for OSPF as that already has fast convergence time with fast hello's etc.. But for BGP this would make a world of difference to remove the BGP routes immediately (in less than a second) as soon as the BGP neighbor goes down/becomes unreachable (even if not a direct link (multi-hop etc)). On 28/10/13 21:10, Dan Farrell wrote: I'm not sure how much a crate is, but if it's a case (24 bottles), then I'll throw in a case as well for this work. Blanche de Chambly, anyone? Or is this more a Maudite crowd? Sincerely, Dan Farrell On Mon, Oct 28, 2013 at 12:54 PM, Andy a...@brandwatch.com mailto:a...@brandwatch.com wrote: Hi all, Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. The protocol itself seems pretty simple and provides a sub-second keep-alive mechanism to monitor links for routes. E.g. Upon BFD failure BGP or OSPF can be torn down etc thus allowing for sub-second re-convergence of i/eBGP! I can only offer a crate of beer to anyone who has the skills and is willing :) '+1's welcome from others who would be interested to show signs of support/interest.. Cheers, Andy.
Re: Request to OpenBSD Dev's - Beer on offer
On 10/29/13 13:45, Andy wrote: Code snippets can be seen on; http://sourceforge.net/projects/kbfd/ http://sourceforge.net/projects/bfdd/ Editing these to compile and work on OpenBSD and run 'bgpctl neighbor $bfdpeer down' etc is beyond my skills.. No editing will make the license work in OpenBSD kernel, i think. -Artturi Thanks for reading, Andy. On Tue 29 Oct 2013 11:16:20 GMT, Andy wrote: Yea its 24.. Would even be happy to offer some champers.. I think this is more of a Maudite crowd.. Connoisseurs on here... As I understand it you would need to write a small daemon to do the BFD state monitoring for the transmission and reception of the heartbeats with various peers. The protocol is fairly simple so for an experienced dev this should be easy. Then in OpenBGPD you would need to have a way of gracefully and forcefully immediately shutting down the BGP neighbor that matches the BFD peer. This could be achieved by simply having the BFD daemon call 'bgpctl neighbor $bfdpeer down' It is not so important for OSPF as that already has fast convergence time with fast hello's etc.. But for BGP this would make a world of difference to remove the BGP routes immediately (in less than a second) as soon as the BGP neighbor goes down/becomes unreachable (even if not a direct link (multi-hop etc)). On 28/10/13 21:10, Dan Farrell wrote: I'm not sure how much a crate is, but if it's a case (24 bottles), then I'll throw in a case as well for this work. Blanche de Chambly, anyone? Or is this more a Maudite crowd? Sincerely, Dan Farrell On Mon, Oct 28, 2013 at 12:54 PM, Andy a...@brandwatch.com mailto:a...@brandwatch.com wrote: Hi all, Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. The protocol itself seems pretty simple and provides a sub-second keep-alive mechanism to monitor links for routes. E.g. Upon BFD failure BGP or OSPF can be torn down etc thus allowing for sub-second re-convergence of i/eBGP! I can only offer a crate of beer to anyone who has the skills and is willing :) '+1's welcome from others who would be interested to show signs of support/interest.. Cheers, Andy.
Re: Request to OpenBSD Dev's - Beer on offer
On 13-10-28 11:54 AM, Andy wrote: Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. [...] '+1's welcome from others who would be interested to show signs of support/interest.. I can only agree, BFD support would be a very nice thing to have, considering that in other ways OpenBSD is already a very capable router. I'm not in a position right now to pay someone properly to implement it, but I can sustain the cost of another case or three of beer. -- -Adam Thompson athom...@athompso.net
Re: Request to OpenBSD Dev's - Beer on offer
On Tue 29 Oct 2013 14:55:05 GMT, Adam Thompson wrote: On 13-10-28 11:54 AM, Andy wrote: Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. [...] '+1's welcome from others who would be interested to show signs of support/interest.. I can only agree, BFD support would be a very nice thing to have, considering that in other ways OpenBSD is already a very capable router. I'm not in a position right now to pay someone properly to implement it, but I can sustain the cost of another case or three of beer. Amazing! So we just need to find an alcoholic developer and we're on our way ;) Could maybe send some caffeine and pro plus in the mean time ..
Re: Request to OpenBSD Dev's - Beer on offer
So this is an ICMP ping with some authentification (on the gateway of a route) ?? Why is this not overkill ? On Tue, Oct 29, 2013 at 11:01 AM, Andy a...@brandwatch.com wrote: On Tue 29 Oct 2013 14:55:05 GMT, Adam Thompson wrote: On 13-10-28 11:54 AM, Andy wrote: Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. [...] '+1's welcome from others who would be interested to show signs of support/interest.. I can only agree, BFD support would be a very nice thing to have, considering that in other ways OpenBSD is already a very capable router. I'm not in a position right now to pay someone properly to implement it, but I can sustain the cost of another case or three of beer. Amazing! So we just need to find an alcoholic developer and we're on our way ;) Could maybe send some caffeine and pro plus in the mean time .. -- - () ascii ribbon campaign - against html e-mail /\
Re: Request to OpenBSD Dev's - Beer on offer
On 13-10-29 10:01 AM, Andy wrote: Amazing! So we just need to find an alcoholic developer and we're on our way ;) Could maybe send some caffeine and pro plus in the mean time .. Are there any OpenBSD developers who don't like beer and/or caffeine? Mind you, many of them are getting as old as I am, so large quantities of beer and caffeine may no longer be ideal. -- -Adam Thompson athom...@athompso.net
Re: Request to OpenBSD Dev's - Beer on offer
No this is more than ping.. In essence it is, but is standardised and is supported on many vendors equipment including Cisco and Juniper etc as used by all our Transit providers.. It means that not only do we remove our BGP routes, but it means that our carriers also remove the routes for our ASN immediately allowing inbound traffic destined for us to be instantly rerouted via another one of the redundant Transit links for example instead of waiting a /long/ time for BGP.. http://en.wikipedia.org/wiki/Bidirectional_Forwarding_Detection On 29/10/13 15:05, sven falempin wrote: So this is an ICMP ping with some authentification (on the gateway of a route) ?? Why is this not overkill ? On Tue, Oct 29, 2013 at 11:01 AM, Andy a...@brandwatch.com wrote: On Tue 29 Oct 2013 14:55:05 GMT, Adam Thompson wrote: On 13-10-28 11:54 AM, Andy wrote: Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. [...] '+1's welcome from others who would be interested to show signs of support/interest.. I can only agree, BFD support would be a very nice thing to have, considering that in other ways OpenBSD is already a very capable router. I'm not in a position right now to pay someone properly to implement it, but I can sustain the cost of another case or three of beer. Amazing! So we just need to find an alcoholic developer and we're on our way ;) Could maybe send some caffeine and pro plus in the mean time ..
Re: Request to OpenBSD Dev's - Beer on offer
On 10/28/2013 06:54 PM, Andy wrote: Hi all, Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. The protocol itself seems pretty simple and provides a sub-second keep-alive mechanism to monitor links for routes. E.g. Upon BFD failure BGP or OSPF can be torn down etc thus allowing for sub-second re-convergence of i/eBGP! I can only offer a crate of beer to anyone who has the skills and is willing :) '+1's welcome from others who would be interested to show signs of support/interest.. I still don't see how is this different from ifstated? You can use it to ping your neighbour then issue bgpctl neighbor $your_fallen_neighbour down command. -- With best regards, Gregory Edigarov
Re: Request to OpenBSD Dev's - Beer on offer
On 2013 Oct 29 (Tue) at 17:44:51 +0200 (+0200), Gregory Edigarov wrote: :On 10/28/2013 06:54 PM, Andy wrote: :Hi all, : :Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. : :The protocol itself seems pretty simple and provides a sub-second keep-alive mechanism to monitor links for routes. E.g. Upon BFD failure BGP or OSPF can be torn down etc thus allowing for sub-second re-convergence of i/eBGP! : :I can only offer a crate of beer to anyone who has the skills and is willing :) : :'+1's welcome from others who would be interested to show signs of support/interest.. : :I still don't see how is this different from ifstated? :You can use it to ping your neighbour then issue bgpctl neighbor $your_fallen_neighbour down command. : : :-- :With best regards, : Gregory Edigarov : A) It's at the router level B) *they* also run it C) This is at ultra-tiny MS resolution D) Somebody got paid a bonus for the RFC -- A little inaccuracy sometimes saves tons of explanation. -- H. H. Munroe, Saki
Re: Request to OpenBSD Dev's - Beer on offer
On Tue, Oct 29, 2013 at 10:15:38AM -0500, Adam Thompson wrote: Are there any OpenBSD developers who don't like beer and/or caffeine? You can try bananas, but only monkeys will step up. -- Antoine
Re: Request to OpenBSD Dev's - Beer on offer
On Tue, Oct 29, 2013 at 4:53 PM, Antoine Jacoutot ajacou...@bsdfrog.org wrote: On Tue, Oct 29, 2013 at 10:15:38AM -0500, Adam Thompson wrote: Are there any OpenBSD developers who don't like beer and/or caffeine? You can try bananas, but only monkeys will step up. masturbating monkeys.
Re: Request to OpenBSD Dev's - Beer on offer
On Tue, Oct 29, 2013 at 11:16:20AM +, Andy wrote: Yea its 24.. Would even be happy to offer some champers.. I think this is more of a Maudite crowd.. Connoisseurs on here... As I understand it you would need to write a small daemon to do the BFD state monitoring for the transmission and reception of the heartbeats with various peers. The protocol is fairly simple so for an experienced dev this should be easy. Then in OpenBGPD you would need to have a way of gracefully and forcefully immediately shutting down the BGP neighbor that matches the BFD peer. This could be achieved by simply having the BFD daemon call 'bgpctl neighbor $bfdpeer down' It is not so important for OSPF as that already has fast convergence time with fast hello's etc.. But for BGP this would make a world of difference to remove the BGP routes immediately (in less than a second) as soon as the BGP neighbor goes down/becomes unreachable (even if not a direct link (multi-hop etc)). BFD should be in kernel and it should change the linkstate like the GRE keepalive protocol does. Everything else is pretty much madness and somewhat impossible to do. PS: I think a I have a tree somewhere hiding with some bits added but I never cared enough to move one. So no beer for me (even though I'm just getting free belgium beer). -- :wq Claudio On 28/10/13 21:10, Dan Farrell wrote: I'm not sure how much a crate is, but if it's a case (24 bottles), then I'll throw in a case as well for this work. Blanche de Chambly, anyone? Or is this more a Maudite crowd? Sincerely, Dan Farrell On Mon, Oct 28, 2013 at 12:54 PM, Andy a...@brandwatch.com mailto:a...@brandwatch.com wrote: Hi all, Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. The protocol itself seems pretty simple and provides a sub-second keep-alive mechanism to monitor links for routes. E.g. Upon BFD failure BGP or OSPF can be torn down etc thus allowing for sub-second re-convergence of i/eBGP! I can only offer a crate of beer to anyone who has the skills and is willing :) '+1's welcome from others who would be interested to show signs of support/interest.. Cheers, Andy.
Re: Request to OpenBSD Dev's - Beer on offer
On Tue, Oct 29, 2013 at 03:01:22PM +, Andy wrote: On Tue 29 Oct 2013 14:55:05 GMT, Adam Thompson wrote: On 13-10-28 11:54 AM, Andy wrote: Would any of the esteemed OpenBSD developers be interested in adding support for BFD (Bidirectional Forward Detection) to OpenBSD. [...] '+1's welcome from others who would be interested to show signs of support/interest.. I can only agree, BFD support would be a very nice thing to have, considering that in other ways OpenBSD is already a very capable router. I'm not in a position right now to pay someone properly to implement it, but I can sustain the cost of another case or three of beer. Amazing! So we just need to find an alcoholic developer and we're on our way ;) Could maybe send some caffeine and pro plus in the mean time .. Finding an alcoholic developer is not a challenge. :-) Ken
