Solved

OSPF design choices

Posted on 2011-02-14
4
463 Views
Last Modified: 2012-05-11
I am setting up a couple of new links to a remote office and would like to use OSPF for dynamic routing.  The primary link will be a 2MB Mpls link and the secondary will be a GRE vpn tunnel over the internet.  I am still in the planning/design phase and I am wondering about the best choice and best practice in terms of assigning the router-id's as I understand this will dictate which router will become the DR.  I am looking for a suggestion on whether or not I should use a loopback address or just manually configure the router-id?  Also,  what IP addressing is the safest to use for router-id scheme and also what would be the best router to choose as the DR assuming all the routers are the same in terms of processing power and memory?

thanks
0
Comment
Question by:FREDARCE
[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
  • 2
  • 2
4 Comments
 
LVL 50

Expert Comment

by:Don Johnston
ID: 34890036
The loopback/router ID method was created so we could have control over the router ID. Once the "router-id" command was implemented, using the loopback interface method was no longer needed. Personally, I like using the "router-id" command.

As for addressing, I like to use numbers that stand out from IP addresses. For example, I typically use 1.1.1.1, 1.1.1.2, 1.1.1.3, etc.

But since it's a just a router ID, you can use any 32-bit dotted decimal number you want.
0
 

Author Comment

by:FREDARCE
ID: 34890101
thanks donjohnston,

What about deciding which router should be the DR?  What would be the influences for determining this?
0
 
LVL 50

Accepted Solution

by:
Don Johnston earned 500 total points
ID: 34890132
If the connection is a point-to-point link, there is no DR. If it's not (and a DR election takes place), I would go with the router that has more CPU and memory.
0
 

Author Closing Comment

by:FREDARCE
ID: 34890153
thanks
0

Featured Post

Optimum High-Definition Video Viewing and Control

The ATEN VM0404HA 4x4 4K HDMI Matrix Switch supports 4K resolutions of UHD (3840 x 2160) and DCI (4096 x 2160) with refresh rates of 30 Hz (4:4:4) and 60 Hz (4:2:0). It is ideal for applications where the routing of 4K digital signals is required.

Question has a verified solution.

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

Network ports are the threads that hold network communication together. They are an essential part of networking that can be easily ignore or misunderstood, my goals is to show those who don't have a strong network foundation how network ports opera…
Use of TCL script on Cisco devices:  - create file and merge it with running configuration to apply configuration changes
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…
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…

628 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