Combining T1s questions

Posted on 2006-03-23
Last Modified: 2010-03-19
Howdy Experts!

I have some questions about combining some separate interent connections into one and am hoping some of you experts can lead me in the right direction.  I will award the points to the most helpful response.

The current setup is that we have a partial T1 (768 Kbps data, and 12 voice channels), a full T1, and are adding a 2 Mbps wireless connection.  All three are are on completely separate subnets and do not work together.  The wireless connection will actually be from a different ISP in an effort to improve reliability.

My questions:
- What is the best way to combine all three of these internet sources into one large pipe for my internal users to access?
- Currently, the full T1 is dedicated to some hosting services we provide.  If I combine everything, how can I be sure the hosting services are getting all the bandwidth they need?  I do not want an internal user's activity to affect the hosting server's performance.
- On the reliability question - I am hoping to have this set up so that if one ISP goes down, our users can still get out, and the hosting services are still alive.  
- Talk a bit about security.  I currently have separate firewalls on all three connections, plus a DMZ on the partial T1.  If all of these are combined, could I reproduce the DMZ?  Would I still need 3 firewalls?  Management is a getting rid of a couple would be a bonus!  :-)

Thank you, and I look forward to your responses.

Question by:Thorin
    1 Comment
    LVL 10

    Accepted Solution

    To accomplish this you will need the following :

    1). A router which supports multiple separate interface types, T1 WIC, ETH0 for wireless, etc.
    I recommend Cisco 2800 series

    2). A router which supports load balancing of links and failover (if one link dies)
    I recommend Cisco 2800 series

    3). A router which supports QoS (Quality of service) which will guarantee you get the correct dedicated throughput for HTTP/HTTPS for your hosting leased line.
    I recommend Cisco 2800 series

    - SaP -


    Featured Post

    Netscaler Common Configuration HowTo guides

    If you use NetScaler you will want to see these guides. The NetScaler HowTo Guides enable administrators to get NetScaler up and running by providing instructions for common configuration scenarios and some not so common ones.

    Join & Write a Comment

    The DSL Parameters part of this article is valid and can be considered with any brand of internet router and modem (Dlink, 3com, Alcatel, Usrobotics, Parks), by accessing the configuration interface available by the manufacturer eg: …
    This is an article about my experiences with remote access to my clients (so that I may serve them) and eventually to my home office system via Radmin Remote Control. I have been using remote access for over 10 years and have been improving my metho…
    After creating this article (, 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…
    In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor ( If you're interested in additional methods for monitoring bandwidt…

    745 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

    Need Help in Real-Time?

    Connect with top rated Experts

    15 Experts available now in Live!

    Get 1:1 Help Now