Solved

cisco routers bridging

Posted on 2004-10-04
7
411 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
[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
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
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
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

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Routing between two networks? 10 106
Can Cisco resolve internet address internally 4 65
WiFi Routers with Guest Network capability 14 121
Public IP Address - Subnet 4 55
New Server 172.16.200.2  was moved from behind Router R2 f0/1 to behind router R1 int f/01 and has now address 172.16.100.2. But we want users still to be able to connected to it by old IP. How to do it ? We can used destination NAT (DNAT).  In DNAT…
Hello , This is a short article on how would you go about enabling traceoptions on a Juniper router . Traceoptions are similar to Cisco debug commands but these traceoptions are implemented in Juniper networks router . The following demonstr…
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…

751 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