The MPLS-OPS Archive

["Cain, Justin" <justin.cain@allegiancetelecom.com>]

Title: Message

We currently have a customer who has approx.  11 T1's all going through 1 T1 Access link, and at this point he does seem to have a problem. 

 

Justin

-----Original Message-----
From: harry [mailto:harry@juniper.net]
Sent: Thursday, August 21, 2003 6:40 PM
To: 'Ellington, Maylon'; mpls-ops@mplsrc.com
Subject: RE: [MPLS-OPS]: Connections to a facility

This is the inverse multiplexing of multiple low-speed interfaces to yield what appears to be a single high-speed UNI. This is defined by the ATM forum as "Inverse Multiplexing for ATM (IMA) Specification Version 1.1"

 

ftp://ftp.atmforum.com/pub/approved-specs/af-phy-0086.001.pdf

 

 

 

I would make the choice based on economics, BW requirements, and reliability. An inverse multiplexed access link can provide significant  reliability advantages, especially when diverse routing/access is provided. Otherwise it is a matter of price. If one T1 is not enough, and a DS-3 is too expensive, then you might consider an ATM access link that is comprised of n T1 links. The cross over point is likely to be around 6 T1s.

 

 

HTHs.

 

 

 

 

-----Original Message-----
From: Ellington, Maylon [mailto:mellington@gta.ga.gov]
Sent: Thursday, August 21, 2003 2:26 PM
To: mpls-ops@mplsrc.com
Subject: [MPLS-OPS]: Connections to a facility

Greetings,

 

We are in the process of converting our network from mostly frame-relay to MPLS. Our Service Provider asked us what the connection to our facility will ride over. They recommended the following options: T1-times-n, DS-3, Ethernet or Inverse ATM.

 

Does anyone know what Inverse ATM is? Also, if you had a choice of how to bring a connection into your facility, what would be your chose?

 

Thanks in advance for your responses