[j-nsp] strange problem on chassis cluster

[Matthias Brumm]

  Hi!

Just a short information, to close this matter:

ATAC was able to reproduce this problem in lab. Upgrade to 10.2 has 
eliminated the problem.

Matthias

Am 07.09.10 01:49, schrieb Michael Damkot:
> This sounds like a bug, have you contacted the J-TAC
>
>
> On Sep 4, 2010, at 08:44 , Matthias Brumm wrote:
>
>> Hi!
>>
>> Sorry to write again.. I may have found a clue:
>>
>> After commiting this happans:
>>
>> PID USERNAME  THR PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
>> 1058 root        1 132    0   607M   607M RUN     21:07 91.94% flowd_hm
>>
>> This is a system without traffic!
>>
>> On the main router:
>> 64 bytes from x.x.x.x: icmp_seq=917 ttl=64 time=4.748 ms
>> 64 bytes from x.x.x.x: icmp_seq=918 ttl=64 time=4.402 ms
>> 64 bytes from x.x.x.x: icmp_seq=919 ttl=64 time=4.484 ms
>> 64 bytes from x.x.x.x: icmp_seq=920 ttl=64 time=4.658 ms
>> 64 bytes from x.x.x.x: icmp_seq=921 ttl=64 time=4.411 ms
>> 64 bytes from x.x.x.x: icmp_seq=922 ttl=64 time=4.746 ms
>> 64 bytes from x.x.x.x: icmp_seq=923 ttl=64 time=4.607 ms
>> 64 bytes from x.x.x.x: icmp_seq=924 ttl=64 time=4.604 ms
>> 64 bytes from x.x.x.x: icmp_seq=925 ttl=64 time=11.607 ms
>> 64 bytes from x.x.x.x: icmp_seq=926 ttl=64 time=50.762 ms
>> 64 bytes from x.x.x.x: icmp_seq=927 ttl=64 time=5.482 ms
>> 64 bytes from x.x.x.x: icmp_seq=928 ttl=64 time=15.932 ms
>> 64 bytes from x.x.x.x: icmp_seq=929 ttl=64 time=14.699 ms
>> 64 bytes from x.x.x.x: icmp_seq=930 ttl=64 time=17.192 ms
>>
>> This stays until the ping stops and the BGP session goes down.
>>
>> Back to pre flowd? Should I use only packet based routing? We are using the Js only as routers.
>>
>> Matthias
>>
>> Am 04.09.10 12:50, schrieb Matthias Brumm:
>>>    HI!
>>>
>>> We have a very strange problem on two chassis clusters with 10.0R3.10
>>> (will try updating to R4.7 today).
>>>
>>> One chassis cluster (2x J6350) is our main system
>>> The other (2x J4350) is a system located on the site of our customer.
>>>
>>> The two clusters are speaking BGP with each other. For the customer
>>> system, this is the only BGP session. Our main system has a full BGP
>>> mesh to our other locations and edge systems. For understanding the
>>> problem, I would compress this to three BGP sessions:
>>>
>>> A) BGP session to AMS-IX over VLAN 1
>>> B) BGP session to ECIX over VLAN 1
>>> C) BGP session to ECIX over VLAN 2
>>>
>>> Involved are two switches. VLAN 1 is configured on both switches to make
>>> it available in Amsterdam and Düsseldorf. VLAN 2 is only configured on
>>> the switch, faced to Düsseldorf, to have a backup in the case the first
>>> switch is dead.
>>>
>>> The day before yesterday, I started to pings to the ECIX router. One
>>> from my local workstation, the other from the main cluster.
>>>
>>> If I cofigure something on the redundant interfaces, as soon as I do the
>>> commit, the first ping stays normal, the second junps to +30ms (normal
>>> around 6ms). 2-3 minutes later, both pings stop. The BGP session drops.
>>> This is the only BGP session that is dropped, due to Hold time
>>> expiration. After a few minutes, the pings and the BGP session come
>>> back. Every other BGP session even the one to Düsseldorf over VLAN 2
>>> stays up.
>>>
>>> I switched the main load to Düsseldorf to VLAN 2. That time, that BGP
>>> session was dropped, while the other stays up. The session to Düsseldorf
>>> is taking the main load with around 260000 prefixes.
>>>
>>> Matthias
>>> _______________________________________________
>>> juniper-nsp mailing list juniper-nsp at puck.nether.net
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