Re: OR and IRX

Robert Boyle (robert@garden.net)
Tue, 17 Dec 1996 20:36:37 -0500

At 04:24 PM 12/17/96 -0500, Thomas Kinnen wrote:
>I have a client that has 8 brach offices with Novell Servers and one main
>office with Novell, NT and Unix servers. They are looking to replace
>existing 56K lines with T1's. I'm thinking of suggesting Synchronous Office
>Routers at the branchs and IRX Routers at the main office (And Adtran
>TSU's for the CSU/DSU's).
>
>Has anyone used the Livingston prouducts in a simular setup? If so how
>have they performed. I'm currently using a 2e and it's been great.

They are great, but correct network design is essential.

>Looking at the Livingston home page the IRX page stats that the IRX has 1
>RS423(RS-232) port and 1-4 V.35 ports that can go to 2048Kb but the
>IRX-114 description has listed 4 synchronous ports but only 2 can go to
>2048Kb. I cound not see any way to get 4 synchronous at full T1 speeds.

The IRX-111 has 1 async 115200 serial port and 1 synchronous 2048k
v.35/RS232 port

The IRX-112 has 1 async 115200 serial port, 1 synchronous 2048k v.35/RS232
port, and 1 synchronous 128k v.35/RS232 port

The IRX-114 has 1 async 115200 serial port, 2 synchronous 2048k v.35/RS232
ports, and 2 synchronous 128k v.35/RS232 ports

>So would I need 8, 4 or 2 IRX's in the main office to handle all 8
>incoming T1's?

Yuck! You really need to see what options your telco offers. You also need
to analyze what type of traffic and what quantity will travel from office
to office. From your description, it sounds like frame relay would be your
best bet. This does depend on your overall network plan, but from your
description, I think this would work best. An added benefit is that you
only need one t1 csu/dsu router combo at your main site and each remote site.

-Robert

Robert Boyle - Engineer robert@garden.net WAN/Intranet/Internet Services
Garden Networks: New Jersey's Premier Internet Service Provider
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