Solved

cisco routers bridging

Posted on 2004-10-04
7
407 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 250 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
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
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

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

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?
Shadow IT is coming out of the shadows as more businesses are choosing cloud-based applications. It is now a multi-cloud world for most organizations. Simultaneously, most businesses have yet to consolidate with one cloud provider or define an offic…
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…

914 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

12 Experts available now in Live!

Get 1:1 Help Now