Cell Relay Archive

[mitchd@vastnet.net (Mitchell)]

Yes. As a test they increased the PVC to 8k, which fixed it, but no
matter what size they made the PVC, they were seeing some DE packets.
Should not be because we have smaller sites with the same exact PVC
size and have no problems.

There isn't that much traffic sent on that site to warrant DE packets.
The sites are using T1 with going into a host PVC with a ATM backbone.




"Atif Sajid" <asajid6@comcast.net> wrote in message news:<LngE8.17126$Ze4.1672717@bin5.nnrp.aus1.giganews.com>...
> Is service provider getting any discards at any point
> in its ATM/FR network?
> 
> "Mitchell" <mitchd@vastnet.net> wrote in message
> e3325a87.0205141229.790a8a2d@posting.google.com">news:e3325a87.0205141229.790a8a2d@posting.google.com...
> > Maybe someone can help with this issue we're having. We have 87 sites,
> > 2 of which are host sites that we're moving over to a new frame-relay
> > provider. We have encountered a problem that has baffled them and it
> > seems to be related to ATM.
> >
> > Here's the setup:
> >
> > 35 sites have been moved over to this new provider. Each site is using
> > a Cisco 1720 router with a Paradyne 9124 CSU/DSU.
> >
> > SITE A
> > 128k port on a T1 loop
> > 4k PVC to Host 1
> > 4k PVC to Host 2
> >
> > HOST 1
> >
> > Cisco 7204 router
> > Paradyne 9820 CSU/DSU
> > 10MB ATM backbone using PLCP
> >
> > HOST 2
> > Cisco 3640 router
> > Paradyne 9124 CSU/DSU
> > Full T1 Line
> >
> > We have one e-mail server sitting on HOST 1. When trying to send an
> > e-mail with an attachment from SITE A to HOST 1, the e-mail program,
> > whether it be Outlook, or even Webmail, cannot send the attachment. It
> > tries to setup a session to attach, but it just hangs. FTP, WWW,
> > Telnet are all working fine. No problems.
> >
> > Route all e-mail through the PVC to HOST 2, which then hands it off to
> > HOST 1, and it works fine. It's going directly to HOST 1 that it has a
> > problem. HOST 1 has the ATM backbone, while HOST 2 does not.
> >
> > Any thoughts, or if you need more info let me know.
> >