[AusNOG] Looking for someone who has experience with Nextgen VPLS

[PRK]

I assume you've done the obvious and done traceroutes from each end to the
other, to confirm no odd routing paths?

Particularly with the Syd -> WAIX, where return traffic from WAIX may go
back a different way than in your Perth WAIX link.

Do the interface graphs for the switches show where traffic may be dropped
or retransmitted - eg site A switchport in at 100Mbps, out to site B at
100Mbps, but only in site B at 10Mbps, etc?

I'd also suggest turning off any port channels on servers for the moment,
and run a single ethernet link, just to rule out any LACP weirdness during
testing.

prk



On 4 April 2011 22:43, Greg M <gregm at servu.net.au> wrote:

> Hi Mark,
>
> Unfortunately not a tcp window issue.
>
> Two servers in Perth, both identical configurations of Win2k8 with dual
> gigabit links in a team - one server I can get 100Mbps to, the other only
> 10Mbps (from a 3rd, identical server in Sydney).
>
> Greg
>
> -----Original Message-----
> From: Mark Smith
> [mailto:nanog at 85d5b20a518b8f6864949bd940457dc124746ddc.nosense.org]
> Sent: Monday, 4 April 2011 9:24 PM
> To: Greg M
> Cc: ausnog at lists.ausnog.net
> Subject: Re: [AusNOG] Looking for someone who has experience with Nextgen
> VPLS
>
> Hi,
>
> On Mon, 4 Apr 2011 19:07:16 +0800
> "Greg M" <gregm at servu.net.au> wrote:
>
> > Hi Noggers,
> >
> >
> >
> <snip>
>
> >
> >
> > Happy to receive responses on or off-list, and we are happy to pay for
> > someone either locally in Sydney or in Perth to help diagnose this -
> > as a lot of money is being burnt on this circuit that is not providing
> > consistent speeds. We have raised these issues to both Nextgen and
> > Telstra and they are pointing the finger at our internal network.
> >
> >
>
> Sounds like you might have TCP window problems due to the large bandwidth
> delay products. If that is the case, the following should help -
>
> Tuning hosts for network performance
>
> http://www.linuxsa.org.au/meetings/2008-09/linuxsa-network-performance-slide
> s.pdf<http://www.linuxsa.org.au/meetings/2008-09/linuxsa-network-performance-slide%0As.pdf>
>
> TCP performance and the Web100 project
> http://www.linuxsa.org.au/meetings/2003-09/tcpperformance.screen.pdf
>
> http://www.psc.edu/networking/projects/tcptune/
>
> Regards,
> Mark.
>
> _______________________________________________
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> AusNOG at lists.ausnog.net
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>
>
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