most times.. with NFAS.. its the buildout on the trunks.
The Primary D and Backup D trunks must be id'd on the telco end
as 1 & 2. They cannot be in any other order.
The B's then must follow. AT&T and SBC both screwed me on this
one and it took Cisco digging into their code to figure out the
router expects the trunk IDs in a certain order.
(Btw: if you want a real nightmare, run NFAS on a AS5800 with 2
seperate Telco's with each telco using different switch types.
Lets just say.. OUCH!)
Thus spake Jared Mauch (jared@puck.nether.net):
> On Mon, Sep 18, 2000 at 05:05:21PM -0400, Todd Gorman wrote:
> > We are having major issues with an AS5300, running 12.1(4.0.1) T, pw
> > 2.7.2.0. It is fed by multiple PRI's provisioned for NFAS. The users have
> > been receiving intermittent fast-busies while trying to connect. Connection
> > success rates are between 70-80%. Once connected, everything is relatively
> > stable.
> >
> > We have worked for weeks with Cisco and Sprint to resolve the problems. We
> > have swapped routers, upgraded and downgraded IOS and portware, ran BERT
> > tests, etc to no avail. Cisco says this is a bug, and has somewhat taken
> > responsibility. However they have not given us a resolution.
> >
> > We have an identical AS5300, with an identical config, with PRI NFAS set up
> > in another data center, and it works fine. Anyone have any similar
> > experiences, advice, etc? Is this really a bug, a service provider problem,
> > or combination of the two? Thank you in advance!!
>
> We have had similar problems with NFAS and a telco in our
> region.
>
> We have the exact same telco in two different cities.
>
> One NFAS group works without a problem, the other one gives
> us nothing but headaches, causing fast-busies, and normal busies.
>
> I would suspect there is something wrong in the signaling between
> the switch and the cisco equipment, and possibly there is some configuration
> option hidden in the switch at the telco that would make it go away, but
> they don't know what to change, or that it's there.
>
> - Jared
>
> --
> Jared Mauch | pgp key available via finger from jared@puck.nether.net
> clue++; | http://puck.nether.net/~jared/ My statements are only mine.
> END OF LINE |
-- Karl S. Hagen email: khagen@greyhelm.com Cisco Certified Network Assoc. (CCNA) pager email: 4317622@skytel.com Sr. Network Engineer pager: (888) 431-7622 Raytheon IT Network Security http://www.greyhelm.com/~khagen/
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