[j-nsp] MX104 limitation

[Saku Ytti]

Hey,

There aren't multiple FPCs on the box really, there is only single MQ
chip out of where all ports sit, usually MIC ports behind additional
IX chip, which is not congested. It's architecturally single linecard
fabricless box.
You're saying you're pushing on the 4x10GE fixed ports 31+31Gbps, e.g.
62Gbps? It might be possible on (perhaps artificially) unfortunate
cell alignment that it could be congested on so low values. Are all
the packets same size, i.e is this lab scenario or just IMIX traffic?
MQ pfe exceptions and MQ=>LU counters might be interesting to see.

If you use QX chip, 62Gbps would be really good, QX chip is not
dimensioned for line rate _unidir_ (i.e. can't do even 40Gbps). If you
don't know if you're using QX or not, just deactive whole
class-of-service and scheduer config in interfaces.

On 20 March 2017 at 01:26, Javier Rodriguez <rodriguezsotelo at gmail.com> wrote:
> Hi,
>
> Thanks for your reply Saku.
> The problem is that fpc2 (fixed ports) can't overcome 31Gbps (in + out)
> with 6Mpps. The graph shows a straight line as if it were being limited.
> I have moved some interfaces from LAG to fpc1 and fpc0 and the traffic has
> incresed. (It only has a tunnel-service in fpc0 of 1g)
> It's as if it were being limited by the MQ, but I do not see discarded
> packages, or I do not know where to look at them.
>
> JR.
>
> 2017-03-19 6:53 GMT-03:00 Saku Ytti <ytti at ntt.net>:
>
>> Hey Javier,
>>
>>
>> MX104 and MX80 (1st gen Trio MQ/LU) should do about 55Mpps and 75Gbps
>> (in+out).
>>
>> On 19 March 2017 at 09:12, Javier Rodriguez <rodriguezsotelo at gmail.com>
>> wrote:
>> > Hi everyone,
>> >
>> > I need a bit of your knowledge.
>> > I have a MX104 as PE router with 4 LAGs.
>> > One LAG facing to P router on FPC2 (fixed ports). The other LAGs
>> > distributed in FPC0 and FPC1.
>> > The problem is that traffic is being limited when reach 28G out/ 4G in
>> > (31Gbps total).
>> > I changed one interface (10G) of the LAG (to P router) to FPC1 and the
>> > traffic has grown a little more.
>> >
>> > Where is the limitation? In the MQ chip?
>> > Where can I see those discarded packages?
>> > How much traffic will the router support on FPC2?
>> > Where could I get a graphic of its internal architecture?
>> > Does a MX80 have the same behavior?
>> >
>> > Thanks in advance,
>> >
>> > JR.
>> > _______________________________________________
>> > juniper-nsp mailing list juniper-nsp at puck.nether.net
>> > https://puck.nether.net/mailman/listinfo/juniper-nsp
>>
>
>
>
> --
> Atte.
>
> Javier I. Rodríguez Sotelo
> _______________________________________________
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  ++ytti