[Babel-users] default route weirdness

[Dave Taht]

I'm going to observe what happens to bird directly in a bit... but I'm
back to static routing to my campus for the nonce.

a353: mips couchgw
de9c: x86_64 bird
a01c: arm labgw

d at dancer:~/git/babeld$ echo dump | nc ::1 33123 | grep 'prefix 0.0.0.0'
add route eca550 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
a2:21:b7:ff:fe:ac:e4:55 metric 320 refmetric 224 via
fe80::e091:f5ff:febe:a353 if eno1
add route ec9330 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
fe80::f6f2:6dff:feb6:a01c if eno1
add route ecce90 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
a2:21:b7:ff:fe:ac:e4:55 metric 512 refmetric 416 via
fe80::230:18ff:fec9:de9c if eno1

I take couch down... it doesn't get an unreachable... just vanishes...
but the labgw goes unreachable???

d at dancer:~/git/babeld$ echo dump | nc ::1 33123 | grep 'prefix 0.0.0.0'
add route ecce90 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
f6:f2:6d:ff:fe:b6:a0:1d metric 192 refmetric 96 via
fe80::230:18ff:fec9:de9c if eno1
add route ec9330 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
f6:f2:6d:ff:fe:b6:a0:1d metric 65535 refmetric 65535 via
fe80::f6f2:6dff:feb6:a01c if eno1

Stays stuck a while

d at dancer:~/git/babeld$ echo dump | nc ::1 33123 | grep 'prefix 0.0.0.0'
add route ecce90 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
f6:f2:6d:ff:fe:b6:a0:1d metric 192 refmetric 96 via
fe80::230:18ff:fec9:de9c if eno1
add route ec9330 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
f6:f2:6d:ff:fe:b6:a0:1d metric 65535 refmetric 65535 via
fe80::f6f2:6dff:feb6:a01c if eno1

Comes back

d at dancer:~/git/babeld$ echo dump | nc ::1 33123 | grep 'prefix 0.0.0.0'
add route ec9330 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
f6:f2:6d:ff:fe:b6:a0:1d metric 96 refmetric 0 via
fe80::f6f2:6dff:feb6:a01c if eno1
add route ecce90 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
f6:f2:6d:ff:fe:b6:a0:1d metric 192 refmetric 96 via
fe80::230:18ff:fec9:de9c if eno1
On Tue, Oct 2, 2018 at 2:44 PM Dave Taht <dave.taht at gmail.com> wrote:
>
> On Sat, Sep 29, 2018 at 3:36 PM Juliusz Chroboczek <jch at irif.fr> wrote:
> >
> > > deploying 18.06.1 (with 1.8.2) on the remaining 4 routers on that
> > > portion of the topology made an enormous jump in reliability.
> >
> > Good to hear that, and sorry for the bug in 1.8.0.
>
> Regrettably I'm no longer sure it's fixed in 1.8.3. I setup the lab and
> distributed 1.8.3 to everything in the lab - I think - (I still have
> some 1.8.0 on campus)
>
> This is what I see:
> labgw: arm :a01c
> couchgw: mips :a353
>
>                    switch
> comcast <---- labgw --------------------------- couchgw ----> campus
>
> (I have 3 other boxes on this running 1.8.3 but I'll go nail it down
> to just two boxes)
>
> I fire up babeld 1.8.3 on labgw. Life is good:
>
> d at dancer:~/git/babeld$ echo dump | nc ::1 33123 | grep 'prefix 0.0.0.0'
>
> add route ec8d50 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
> f6:f2:6d:ff:fe:b6:a0:1d metric 96 refmetric 0 via
> fe80::f6f2:6dff:feb6:a01c if eno1
> add route ec7f10 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> f6:f2:6d:ff:fe:b6:a0:1d metric 192 refmetric 96 via
> fe80::230:18ff:fec9:de9c if eno1
> add route ecdad0 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> f6:f2:6d:ff:fe:b6:a0:1d metric 192 refmetric 96 via
> fe80::225:90ff:fec1:6252 if eno1
> add route ec6550 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> f6:f2:6d:ff:fe:b6:a0:1d metric 192 refmetric 96 via
> fe80::46d9:e7ff:fe93:822e if eno1
>
> I fire up babeld 1.8.3 on couch. Life goes to hell as somehow the
> refmetric and metric grow for no reason I can think of... there should
> be
> no way the metric for a01c should get modified by anything else here??
>
> d at dancer:~/git/babeld$ echo dump | nc ::1 33123 | grep 'prefix 0.0.0.0'
> add route ec8d50 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
> a2:21:b7:ff:fe:ac:e4:55 metric 512 refmetric 416 via
> fe80::f6f2:6dff:feb6:a01c if eno1
> add route ec7f10 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 608 refmetric 512 via
> fe80::230:18ff:fec9:de9c if eno1
> add route ecdad0 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 608 refmetric 512 via
> fe80::225:90ff:fec1:6252 if eno1
> add route ec6550 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 608 refmetric 512 via
> fe80::46d9:e7ff:fe93:822e if eno1
> add route ec7780 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
> fe80::e091:f5ff:febe:a353 if eno1
>
> I don't understand why the a01c route would get a different metric and
> refmetric by merely firing up another box. It should have stayed
> stable, yes?
>
> I wait a bit and they go down a bit.
>
> add route ec7780 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
> a2:21:b7:ff:fe:ac:e4:55 metric 320 refmetric 224 via
> fe80::e091:f5ff:febe:a353 if eno1
> add route ec8d50 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
> fe80::f6f2:6dff:feb6:a01c if eno1
> add route ec7f10 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
> fe80::230:18ff:fec9:de9c if eno1
> add route ecdad0 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
> fe80::225:90ff:fec1:6252 if eno1
> add route ec6550 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
> fe80::46d9:e7ff:fe93:822e if eno1
>
> I restart babeld on the labgw
>
> d at dancer:~/git/babeld$ echo dump | nc ::1 33123 | grep 'prefix 0.0.0.0'
> add route ec7780 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
> a2:21:b7:ff:fe:ac:e4:55 metric 320 refmetric 224 via
> fe80::e091:f5ff:febe:a353 if eno1
> add route ec7f10 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
> fe80::230:18ff:fec9:de9c if eno1
> add route ecdad0 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
> fe80::225:90ff:fec1:6252 if eno1
> add route ec6550 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
> fe80::46d9:e7ff:fe93:822e if eno1
> add route ec9330 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 416 refmetric 320 via
> fe80::f6f2:6dff:feb6:a01c if eno1
>
> and wait a bit... nothing changes
>
> I shut down the couch box
>
> d at dancer:~/git/babeld$ echo dump | nc ::1 33123 | grep 'prefix 0.0.0.0'
> add route ec7f10 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
> a2:21:b7:ff:fe:ac:e4:55 metric 512 refmetric 416 via
> fe80::230:18ff:fec9:de9c if eno1
> add route ecdad0 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 65535 refmetric 65535 via
> fe80::225:90ff:fec1:6252 if eno1
> add route ec6550 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 65535 refmetric 65535 via
> fe80::46d9:e7ff:fe93:822e if eno1
> add route ec9330 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> a2:21:b7:ff:fe:ac:e4:55 metric 65535 refmetric 65535 via
> fe80::f6f2:6dff:feb6:a01c if eno1
>
> wait 2 minutes...
>
> add route ec9330 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
> f6:f2:6d:ff:fe:b6:a0:1d metric 65535 refmetric 65535 via
> fe80::f6f2:6dff:feb6:a01c if eno1
>
> ???
>
> Then, we're all happy again
>
> d at dancer:~/git/babeld$ echo dump | nc ::1 33123 | grep 'prefix 0.0.0.0'
> add route ec9330 prefix 0.0.0.0/0 from 0.0.0.0/0 installed yes id
> f6:f2:6d:ff:fe:b6:a0:1d metric 96 refmetric 0 via
> fe80::f6f2:6dff:feb6:a01c if eno1
> add route ecce90 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> f6:f2:6d:ff:fe:b6:a0:1d metric 192 refmetric 96 via
> fe80::230:18ff:fec9:de9c if eno1
> add route ec9d90 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> f6:f2:6d:ff:fe:b6:a0:1d metric 192 refmetric 96 via
> fe80::46d9:e7ff:fe93:822e if eno1
> add route ec9df0 prefix 0.0.0.0/0 from 0.0.0.0/0 installed no id
> f6:f2:6d:ff:fe:b6:a0:1d metric 192 refmetric 96 via
> fe80::225:90ff:fec1:6252 if eno1
>
>
>
>
>
>
> >
> > -- Juliusz
>
>
>
> --
>
> Dave Täht
> CEO, TekLibre, LLC
> http://www.teklibre.com
> Tel: 1-669-226-2619



-- 

Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619