Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

cisco routers bridging

Posted on 2004-10-04
7
Medium Priority
?
414 Views
Last Modified: 2010-04-17
hello there,
I'll go to the point. I have three locations I need to connect to use the same subnet,



                                                                Location 1
                                                               (1721)Router 1
                  Location 2                          atm0   |      | atm1                                 Location 3
            (828)Router 2_____________________/       \_______________________ Router 3(828)

Each interfaces has its own ip address.
Using G.SHDSL interfaces.
when connecting a pc on each router, it works (I can ping all pcs), BUT I can't ping the atm interface on the other routers.
example, I'm connecting to R2, I can't ping R1-atm0, R1-atm1 and R3-atm0.
I think something to do with arp, if yes then how can I add a record.
             
0
Comment
Question by:moe_740
7 Comments
 
LVL 11

Expert Comment

by:PennGwyn
ID: 12227503
Putting multiple location on the same subnet is a Really Bad Idea, because all broadcasts (including, for instance, arp) need to go across the WAN links -- which typically have low bandwidth and high latency.  The point of using routers is to restrict the LAN traffic to stuff that really does need to go between sites.

0
 

Author Comment

by:moe_740
ID: 12234437
I know exactly what you mean, but we needed to use bridging because one location have only one pc the second have 6. we also need it for management.
0
 
LVL 1

Accepted Solution

by:
tevens earned 1000 total points
ID: 12244124
Moe_740...

If your goal is to use a single subnet across all locations, then you’re going to need to use IRB.  

On each router do something like the following…

conf t
    bridge irb
    int atm <int>
       bridge-group 1
   
     int bvi1
        ip add <ip>

--Tim
0
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.

 
LVL 5

Expert Comment

by:netspec01
ID: 12258206
As PennGwyn says, don't do this.  Maybe you could re-phrase your question so that we can help you eliminate the need to use bridging on a WAN?
0
 
LVL 5

Expert Comment

by:netspec01
ID: 12280745
How are you coming along with your network problem?  Do you need more assistance?
0
 
LVL 50

Expert Comment

by:Don Johnston
ID: 16045025
No comment has been added to this question in more than 21 days, so it is now classified as abandoned. I will leave the following recommendation for this question in the Cleanup topic area:

Award points to tevens

Any objections should be posted here in the next 4 days. After that time, the question will be closed.

donjohnston
EE Cleanup Volunteer
0

Featured Post

How to Use the Help Bell

Need to boost the visibility of your question for solutions? Use the Experts Exchange Help Bell to confirm priority levels and contact subject-matter experts for question attention.  Check out this how-to article for more information.

Question has a verified solution.

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

Creating an OSPF network that automatically (dynamically) reroutes network traffic over other connections to prevent network downtime.
Getting hacked is no longer a matter or "if you get hacked" — the 2016 cyber threat landscape is now titled "when you get hacked." When it happens — will you be proactive, or reactive?
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…

916 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