[j-nsp] Antwort: Re: Antwort: Re: Bad TCP Session Performance

[jens.hoffmann at ddkom.de]

The test runs as follows :

Host-1 === fe === M7i ===aggregated SONET 2xSTM-1 === M5 === fe(802.1Q) ===
CATALYST3550 === Host-2

or

Host-1 === fe === M7i ===aggregated SONET  2xSTM-1 === M5 === fe === Host-2

or

Host-1 === fe === M10i ===SONET 1xSTM-1=== M5 === fe === Host-2

Kind Regards
Jens

Hannes Gredler <hannes at juniper.net> schrieb am 03.04.2006 09:51:35:

> ok 7.0R2.7 is not affected by the TCP problem
> that was mentioned by luiz;
>
> did you do perform your throughput test from the RE to some host on the
net ?
>
> /hannes
>
> jens.hoffmann at ddkom.de wrote:
> > Hi Hannes,
> >
> > I'm using the same JUNOS 7.0R2.7 on each device (M7i, M10i, M5 and
M10).
> >
> > The end to end RTT is not conspicuous.
> >
> > Model: m7i
> > JUNOS Base OS boot [7.0R2.7]
> > JUNOS Base OS Software Suite [7.0R2.7]
> > JUNOS Kernel Software Suite [7.0R2.7]
> > JUNOS Packet Forwarding Engine Support (M7i/M10i) [7.0R2.7]
> > JUNOS Routing Software Suite [7.0R2.7]
> > JUNOS Online Documentation [7.0R2.7]
> > JUNOS Crypto Software Suite [7.0R2.7]
> >
> > Kind Regards
> > Jens
> >
> >
> > Hannes Gredler <hannes at juniper.net> schrieb am 03.04.2006 09:20:27:
> >
> >
> >>jens,
> >>
> >>what JUNOS S/W do you run ?
> >>
> >>/hannes
> >>
> >>jens.hoffmann at ddkom.de wrote:
> >>
> >>>
> >>>
> >>>Hi,
> >>>
> >>>I have a litlle bit tricky problem.
> >>>
> >>>Without packet loss, large latency and lack of WAN bandwidth  I'm
> >
> > recognize
> >
> >>>a limited TCP session bandwidth at about 16-20 Mbps for every single
> >
> > TCP
> >
> >>>session.
> >>>
> >>>At first I had the suspect that the problem is caused by enabled flow
> >>>control on some ethernet interfaces. But the problem appears also with
> >>>disabled flow control.
> >>>Policers are also not configured on the path of the session.
> >>>
> >>>I'ld be very pleased for some helpful advice.
> >>>
> >>>Kind Regards,
> >>>Jens