What frame relay switch is causing MCI/Worldcom such grief?

Shawn "CJ" Washington CJ at bbn.com
Mon Aug 9 13:58:12 UTC 1999

Doe's anyone have an idea as to what Link State Algorithm the Cascade/Ascend
9000's switches run?  I have been given conflicting reports that it is OSPF,
or others say that it is OSPF "like"  since John Moy worked for Cascade, he
developed a version of OSPF for the Cascade/Ascend switches.  Doe's anyone
have more info on this?  Also, if so, what version is supported on the
Amethyst, Jade v.1, v.2. releases.  Apparently, this may have something to do
with all the instability issues with WCOM.


Michael Dillon wrote:

> On Mon, 9 Aug 1999, Michael P. Lucking wrote:
> > On Mon, 9 Aug 1999, Michael Dillon wrote:
> >
> > > Is this another vendor related problem? If not, does it affect NNI
> > > customers of Worldcom?
> >
> > Yes. We have one PVC using NNI via  MCI/Worldcom (got it from LDDS years
> > ago). It has been bouncing up and down for the past four days.
> Actually, what I meant was whether this so-called packet storm has
> extended to frame relay networks with NNI to Worldcom. The PVC will bounce
> if Worldcom cannot maintain the PVC portion within their network or cannot
> pass traffic through their network. But the public description so far
> seems to imply that the problem propogates from one switch to another.
> Assuming this is actually what is happening, I wondered whether the
> problem was propogating into any other networks via NNI connections.
> And if the answer is yes, then what vendor made the switches, etc. etc...?
> --
> Michael Dillon                 -               E-mail: michael at memra.com
> Check the website for my Internet World articles -  http://www.memra.com

Shawn "CJ" Washington
Senior Network Engineer
CCIE # 4683
GTE Internetworking
(410) 309-8349
cj at bbn.com

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