[j-nsp] MX104 limitation

[Javier Rodriguez]

Soku,

Maybe there was a misunderstanding , the inbound traffic on fpc2's LAG was
4Gbps , and the outbound traffic was 27Gbps aprox. That outbound traffic
enters by the fpc1 and fpc0.
It's IMIX traffic, the average packet size is 1250Bytes (out) 200Bytes
(in). I tried to see dropped packets with "show precl-eng 5 statistics "
and "show mqchip 0 drop stats" at pfe shell but it's 0. Does it save
historical data?


<--27G-- | | <--27G--
|FPC2 FPC 0/1 |
--4G--> |     | --4G-->

Regards,

Javier.


2017-03-19 20:43 GMT-03:00 Saku Ytti <saku at ytti.fi>:

> 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
> > _______________________________________________
> > juniper-nsp mailing list juniper-nsp at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/juniper-nsp
>
>
>
> --
>   ++ytti
>



-- 
Atte.

Javier I. Rodríguez Sotelo