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

[joel ahumuza]

Hi Alexandre,

Unfortunately the filters are not helping, the flaps are still present 😞.
Still looking for ways to mitigate this issue.

On 29 April 2016 at 11:14, joel ahumuza <ahm.joel at gmail.com> wrote:

> 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
>> https://puck.nether.net/mailman/listinfo/juniper-nsp
>>
>
>
>
> --
> Blessings,
>
> AJ.
> SkypeID - jl.hmz
> ahumuza-joel.blogspot.ug
>



-- 
Blessings,

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