North American Network Operators Group

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Re: UBR at MAE-East ATM, anyone?

  • From: Steve Feldman
  • Date: Tue Apr 18 01:20:06 2000

When I left wcom, there was a project starting to
implement an option to provision UBR PVCs.
It required non-trivial changes to Peermaker,
so would take some time.

I'll let the current MAE crew answer as to current state,
availability, etc.

On Mon, Apr 17, 2000 at 10:37:17PM -0400, Alex Rubenstein wrote:
> I've been talking to the WCom MAE folk, and the explained to me that the
> the VC's between beers are built as ABR, with PCR being twice SCR. Also,
> the port you lease from them has a non-oversubscription policy, i.e., the
> sum of all SCR's combined cannot be more than port speed.
> >From what I can tell, PBNap and Ameritech both build the VC's as UBR, with
> no over-allocation protection.
> In my travels of contacting other providers for peer information, I have
> run across about 5 (albeit out of about 60 who responded) that said they
> couldn't turn up new VC's across MAE-East ATM, because they have reached
> thier subscription allocation, even though thier port is not nearly full.
> A few had even expressed they wish that it was the ameritech-like UBR
> model.
> One person who I spoke to at WCom had said that maybe someday they would
> allow UBR PVCs, but there was no timeline.
> What are other people's thoughts on this?