[j-nsp] LDP flaps specifically present on ACX Juniper routers (ACX4000 and ACX1100)

[joel ahumuza]

Hi All,
Aaron,
Not all ldp interfaces are /32, my loopbacks are /32s other interfaces
attached to the ldp process are p2p links with /31 masks.

Alexandre,
Thank you, I have applied the filters to our devices. I will monitor and
advise.

On 28 April 2016 at 23:43, Alexandre Guimaraes <
alexandre.guimaraes at ascenty.com> wrote:

> Had experienced the same thing.
>
> After adding this to the loopback filter, the problem gone
>
>
> set firewall family inet filter PROTECT-RE term aceita-ldp from protocol
> tcp
> set firewall family inet filter PROTECT-RE term aceita-ldp from protocol
> udp
> set firewall family inet filter PROTECT-RE term aceita-ldp from
> source-port 646
> set firewall family inet filter PROTECT-RE term aceita-ldp from
> destination-port 646
> set firewall family inet filter PROTECT-RE term aceita-ldp then accept
>
> Alexandre
>
> -----Mensagem original-----
> De: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] Em nome de
> joel ahumuza
> Enviada em: quinta-feira, 28 de abril de 2016 12:38
> Para: juniper-nsp at puck.nether.net
> Cc: tech at roketelkom.co.ug
> Assunto: [j-nsp] LDP flaps specifically present on ACX Juniper routers
> (ACX4000 and ACX1100)
>
> 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
>
> The physical connections are okay, no flaps or errors on the p2p
> connections We are running ISIS as the IGP, whose adjacency is stable.
>
> 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,
>
> AJ.
> SkypeID - jl.hmz
> ahumuza-joel.blogspot.ug
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
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>



-- 
Blessings,

AJ.
SkypeID - jl.hmz
ahumuza-joel.blogspot.ug