Solved

Dual WAN connection to the same remote office

Posted on 2004-04-16
3
153 Views
Last Modified: 2010-05-18
Here is my set-up:
2 2600 Cisco routers. Both have an available Smart Serial port.
WAN connection via a 56k circuit over X.25 on a 1T WIC w/ separate CSU

We will be upgrading the circuit to T1. Telco has installed the T1 and loop back from CSU to CSU is good.

I was wondering if we could go ahead and add the T1 to an available Smart Serial port on the 2T WIC. On Cisco’s website it looks like it will support that speed. I would like to add the T1 while the 56k is still running so that the planned cut-over goes smooth. Is there any downside of this? Besides setting the Bandwidth to 1544 and Encapsulation to PPP on both routers are there any other settings I need on the routers?
0
Comment
Question by:RyanSuiso
3 Comments
 
LVL 11

Accepted Solution

by:
PennGwyn earned 125 total points
Comment Utility
You'll likely want to assign the new ports IP addresses (although for a dedicated point-to-point link like this, you *can* get away with "ip unnumbered").

Then you'll want to adjust your routing so that the routers know to use the new line for traffic.  Static routing is probably what you're already doing, and it's pretty simple:

ip route <dest> <mask> <interface> (for point-to-point interfaces)
ip route <dest> <mask> <next-hop> (for router to select interface based on address, and send to a specific gateway on a subnet)

If you want to use both connections, or to fail over automatically to the 56K if the T1 breaks, then that's a bit trickier.  The easiest thing would be to run EIGRP or OSPF to share route information dynamically instead of statically.  OSPF will prefer the T1, but fail over to the 56K if that's all that's available.  EIGRP will distribute the load based on available bandwidth if you give it a big enough "variance" setting.
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

Suggested Solutions

What is IRC? IRC (Internet Relay Chat) is a form of communication between multiple users. It is available freely to anyone with inernet access. IRC is a great way to communicate with others e.g. There is an IRC channel for Ubuntu Linux, which is fo…
If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

772 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

8 Experts available now in Live!

Get 1:1 Help Now