Re: [Idr] WG Adoption call for draft-spaghetti-idr-bgp-sendholdtimer-09 (2/28/2023 to 3/14/2023)

[Nick Hilliard <[e-mail]>]

Mikael Abrahamsson wrote on 07/03/2023 10:09:
> On Tue, 7 Mar 2023, Robert Raszuk wrote:
>> But we discussed this ... If network is stable and you are only putting
>> keepalives say every 60 sec it will be hours before the socket buffer 
>> get's
>> filled and you get first notification about it to local BGP process.
>>
>> How is the solution presented in this draft helpful ?
> 
> Our network (which has had this happen to us) sends data all the time, 
> and even if it takes hours it's still better than the alternative of not 
> detecting it at all.

this draft is about unsticking connections which have been jammed for 
time periods longer than hours [bgpzombies], and it's normal for BGP 
session uptime to be measured in months rather than hours. For example, 
here's the output of an entirely unremarkable dfz leaf router:

> Neighbor      V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
> 185.x.x.a     4         zzzz  226429  218447 1698392790    0    0 9w6d            2
> 185.x.x.b     4         zzzz 1230618  591626 1698392790    0    0 26w6d       10543
> 185.x.x.c     4         zzzz  247092  103288 1698392790    0    0 4w4d        10543
> 185.x.x.d     4         zzzz  643980  670503 1698392790    0    0 30w3d           0
> 185.x.x.e     4         zzzz 23580593  525601 1698392790    0    0 23w6d      906760
> 185.x.x.f     4         zzzz  363536  376941 1698392790    0    0 17w1d          25

Nick