?
Solved

ISDN And SDSL Load Sharing

Posted on 2004-09-29
1
Medium Priority
?
234 Views
Last Modified: 2012-06-21
I have a high profile remote site which is currently using a E1 Frame Relay for its primary and a 10-channel ISDN as its backup connectivity.  The E1 is pretty congested at the moment which I am addressing by having a 2nd E1 installed (as I said they are high-profile !).  Anyway I have ordered a 1Meg SDSL connection and plan to use this for backup until the second E1 arrives (looking at a couple of months - God Bless carriers !!!!)
My question is this:
Can I configure the ISDN and SDSL to do some kine od load sharing in the event of a failure ?  I have already built the Frame/SDSL scenario for other offices and it works fine using GRE tunnels & IPSec.........It just seems a bit of a waste of 1/2 a Meg of bandwidth on the ISDN sitting idle if I can use it...............
0
Comment
Question by:jajjones
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 13

Accepted Solution

by:
td_miles earned 2000 total points
ID: 12196506
load sharing is a little different to failover.

With failover, you are taking all of the traffic that was previously going down one link and simply rerouting it over another link.

With load sharing, you need to split the traffic between the two (or more) links. There are numerous technologies for doing this, but paramount to making it work is the fact that both ends need to support it and know about it.

There are no standards for load sharing between an ISDN link & ADSL line. For inbound traffic, you would need to use something like BGP to advertise the two routes (over the different links) to load share at an IP level. It it was for outbound traffic only, then two equal cost routes (one for ISDN, one for ADSL) should work.

Maybe I'm not quite reading it correct, but you have an E1, that currently has 640k ISDN as backup. You now have a DSL line that you are going to use as the backup to the E1. If you are happy with the E1 with DSL backup, why not just cancel the ISDN ?
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Tired of waiting for your show or movie to load?  Are buffering issues a constant problem with your internet connection?  Check this article out to see if these simple adjustments are the solution for you.
Quality of Service (QoS) options are nearly endless when it comes to networks today. This article is merely one example of how it can be handled in a hub-n-spoke design using a 3-tier configuration.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Suggested Courses

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question