Quick update: The routers that have been upgraded to run 6.7 have been working without any issues yet. This is in a basic routing configuration with BGP + OSPF on RouterBoard hardware.
We'll be upgrading another edge router shortly too. Brett Woollum Senior Sales Engineer [email protected] Tekify Broadband Internet Services Web: http://www.tekify.com Phone: 510-266-5800 , ext 6200 ----- Original Message ----- From: "Paolo Di Francesco" <[email protected]> To: "Brett Woollum" <[email protected]>, "Paul Hendry" <[email protected]> Cc: "WISPA General List" <[email protected]> Sent: Monday, January 27, 2014 3:46:12 AM Subject: Re: [WISPA] [Spam] Re: Mikrotik on Multi-core Hi Brett > That's essentially what we got from them too. They said that this was > fixed in 6.2 and later. There were two related bugs apparently. > it looks like OSPF and BGP still have isses.. in the past for sure OSPF was not working very well and it looks like it has still some bugs here and there wondering if one day they will fix that code, but I already know the answer: new routeros version = new (old) bugs > Paolo, > > We can't use BGP. While we could in therory use BGP from the edge to the > next hop router, what about the hop after that? And after that? In my case, in the past I did the same and it worked to "isolate" some pieces of the network. It looks like with a smaller OSPG graph OSPF and BGP talk better, but not sure if it applies for your topology > We can't > reasonably switch over to BGP for the entire network, so there has to be > a demarcation of BGP/OSPF somewhere in the network. I'd like it to be on > the edge as that's the only place we need BGP running. > well I have solved a lot of issues "rethinking" OSPF and making it simpler. For sure, who is running only BGP is having much more stability (this is what I have heard) > Thankfully we haven't seen any issues yet. I've been testing 6.7 on > older MIPSBE boards (RB450G, RB493G, etc). Hopefully they'll remain > stable. The bugs may be related to the newer boards (CCR, 2011, etc). great to hear, I still have no real case where 6.7 is deployed in my network so no feedback on this specific configuration. Please in case let us know :) For sure 6.x is not a good candidate for my whole network, for example I see they changed openvpn in 6.x and other feature were not working well (for me!) > I've thought about switching the edge to another vendor (Vyatta, or > BSD), but that's a last resort and I'll only go there if necessary. I was running OpenBSD on the edge and it was working nice, but again it's the OSPF "whole thing" which could not be working in your case, giving you some strange issues For example with OSPF, I was seeing part of the network disappearing, route flapping etc. Why? it's the mikrotik ospf! As said, if you "simplify" your OSPF topology (graph) it will give you less issues > I'm going to upgrade one edge router from 5.24 to 6.7 today and test it > out. Let's hope I don't find any bugs. Thankfully it's a simple setup > with a BGP default route + OSPF, no LCD, no MPLS, etc. Let us know :) The main question with mikrotik is why at each release they introduce new bugs or same isses of the past... hum... > Describe the OSPF poisoning your referring to. The issue we see is that > over time OSPF doesn't always redistribute the default route learned by > BGP. It works most of the time, but it's not always reliable. Cycling > the BGP peer fixes it. Here's what Mikrotik wrote back about it: Well what I have seen in the last years on mikrotik OSPF is: a) default route disappearing b) why this XYZ route is not spread across the whole network? c) why part of the network is disappearing etc... By the way: are you sure that upgrading the whole network with YOUR configuration and routers, something else will not appear on 6.X? Personally I would just solve the edge issue and keep everyhing as it is Paolo -- Ing. Paolo Di Francesco Level7 s.r.l. unipersonale Sede operativa: Largo Montalto, 5 - 90144 Palermo C.F. e P.IVA 05940050825 Fax : +39-091-8772072 assistenza: (+39) 091-8776432 web: http://www.level7.it
_______________________________________________ Wireless mailing list [email protected] http://lists.wispa.org/mailman/listinfo/wireless
