Ethernet Point-to-Point Networking

Answered Question
Mar 7th, 2014
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Hi guys


My company has ordered an ethernet point to point network for backups/disaster recovery;

http://www.virginmediabusiness.co.uk/Products-and-solutions/Site-to-Site-Connectivity/Ethernet-point-to-point/          


Does anyone have any experience of setting this up?  The supplier has suggested we use a layer 3 switch at each end, so in theory I believe we could plug the connection straight in and have an extension to our network.  My boss however, doesnt want broadcast traffic running down this link, so am i right in thinking that you can setup a /30 network for an IP address on each end to stop broadcasts? This link is intended for purely backups so normal network traffic would not be traversing it. We already have an MPLS connection to connect to the same site and to other sites as well.     


Thanks

Stuart

Correct Answer by Joseph W. Doherty about 3 years 5 months ago

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You can treat this kind of connection pretty much like you would with any other LAN Ethernet connection.  If you have a pair of routers and/or L3 switches, you can route across the link with a /30 (or possibly /31) or larger if you wanted.

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Vasilii Mikhail... Fri, 03/07/2014 - 08:07
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Hello, Stuart.


I would say it's a correct approach to use the link as L3. If you use L3 switches on both ends, then I suggest to use "no switchport" command (to get rid of SVI and STP). Routers would even be better.


At the same time you need to think about routing over backup link.

The best would be to terminate the link on the same "block" of devices, as your primary (MPLS) link.


Do you have interconnectivity and routing diagram of your network?

Correct Answer
Joseph W. Doherty Fri, 03/07/2014 - 08:08
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Disclaimer


The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.


Liability Disclaimer


In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.


Posting


You can treat this kind of connection pretty much like you would with any other LAN Ethernet connection.  If you have a pair of routers and/or L3 switches, you can route across the link with a /30 (or possibly /31) or larger if you wanted.

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