On 31 July 2017 at 12:14, <[email protected]> wrote:
>> I could also give similarly BGP examples, which would make it appear like >> IOS- >> XR has bad BGP compared to JunOS. > I'd like to hear those actually. I'm not gonna go through emails, cases and wiki, so just stuff from top of my head. XR re-advertises default at every update generation cycle, leading to far-end potentially reset the route age changing their route selection. This is against RFC4271 which forbids resending same unchanged route. (CSCve41797) XR ORR does not advertise any route (not even suboptimal) if next-hop needs recursion. Maybe 7 BGP crash bugs in 5.3.1 that hit us Hard to track BGP ghosting issues (technically not ghosting, closing TCP window so nothing can be communicated, while rest of the network has converged, one box may be lagging tens of minutes or hour) Static define on BGP process size, after which you just crash, instead of use memory you actually have, breaking scaling Then 'minor' stuff, like breaking compatibility with RFC1771 speakers in minor release update (CSCva74669), unable to to talk standard compliant RFC1771 implementation. Our product description does not mandate that you must be 4271. Certainly does not feel good to suddenly break bunch of BGP sessions to customers for no good reason. Then of course the LPTS stuff, we see perhaps twice a month issue where some XIPC TCP queue gets congested and all BGP sessions hitting that queue get dropped. With no indication what was in the TCP queue. I cherry-picked problems we don't have with JunOS. Of course in JunOS you've long time had very unpredictable convergence between bgp and krt. Not trying to start debate about which BGP implementation is better or worse. Just pointing out Juniper being 'worst' implementation is highly subjective. Another network might have 0 problems with JunOS BGP and massive issues with XR BGP. -- ++ytti _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
