[afnog] LDP flaps specifically present on ACX Juniper routers (ACX4000 and ACX1100)

[joel ahumuza]

Hello Jide,

I have ldp enabled on the loopback interface;
config:

joel at hostname> show configuration | display set | match ldp | match lo
set protocols ldp interface lo0.0


On Fri, Apr 22, 2016 at 1:10 PM, Jide Akintola <jidept at yahoo.com> wrote:

> Do you have LDP enabled on Lo0 interface? Can you share pertinent config?
>
> Cheers
> Jide
>
>
> Sent from Yahoo Mail for iPhone <https://yho.com/footer0>
>
>
> On Friday, April 22, 2016, 10:38 am, joel ahumuza <ahm.joel at gmail.com>
> wrote:
>
> Hi All,
>
> We are experiencing an issue with ACX routers running on 12.3X54-D20.7
> where the LDP sessions are continuously flapping, the logs indicate the
> following;
>
> Apr 21 03:36:31  hostname rpd[2299]: RPD_LDP_SESSIONDOWN: LDP session
> x.x.x.x is down, reason: hold time expired
> Apr 21 03:36:34  hostname rpd[2299]: RPD_LDP_NBRDOWN: LDP neighbor x.x.x.x
> (lo0.0) is down
> Apr 21 03:36:38  hostname rpd[2299]: RPD_LDP_NBRDOWN: LDP neighbor x.x.x.x
> (lo0.0) is down
> Apr 21 03:36:38  hostname rpd[2299]: RPD_LDP_SESSIONDOWN: LDP session
> x.x.x.x is down, reason: all adjacencies down
> Apr 21 03:55:34  hostname rpd[2299]: RPD_LDP_SESSIONDOWN: LDP session
> x.x.x.x is down, reason: received notification from peer
> Apr 21 03:55:34  hostname rpd[2299]: RPD_LDP_SESSIONDOWN: LDP session
> x.x.x.x is down, reason: received notification from peer
> Apr 21 03:55:35  hostname rpd[2299]: RPD_LDP_SESSIONDOWN: LDP session
> x.x.x.x is down, reason: received notification from peer
> Apr 21 03:55:35  hostname rpd[2299]: RPD_LDP_SESSIONDOWN: LDP session
> x.x.x.x is down, reason: received notification from peer
>
> Actions taken from our team was;
> - Increase the hold time setting on the ldp enabled interfaces.
> - Increase the time interval on the same ldp enabled interfaces.
> - setting the ldp session protection setting on the ldp enabled loopback
> interface.
>
> Unfortunately the actions did not yield much since the flaps have been
> ongoing.
>
> Anyone have any Idea on what the problem / solution might be?
>
> --
> Blessings,
>
> Joel Ahumuza
> SkypeID - jl.hmz
> + 256-75-1040411 <+%20256-75-1040411> | + 256-78-2040411
> <+%20256-78-2040411>
>
>
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-- 
Blessings,

Joel Ahumuza
SkypeID - jl.hmz
+ 256-75-1040411 | + 256-78-2040411
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