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  1. #1
    Join Date
    Nov 2010
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    98

    Layer2 Multipoint Connections

    Hi All,

    We are looking at options available doing multipoint layer network across 5 or 6 datacenters. We run 6506's with sup720's and was wondering if anyone had any good advice or suggestions for managing the connectivity? Between vlans, 802.1q, QinQ, vmware trunks, etc. it seems like there are a lot of good technologies to work with, but would appreciate any advice or direction.

    Also curious as to people's thoughts about when it is best to move from layer 2 to layer 3?
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    Scalable Enterprise Architecture for Small and Medium Businesses
    www.enteracloud.com

  2. #2
    Join Date
    Feb 2004
    Location
    Atlanta, GA
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    5,627
    how far apart are these facilities?

  3. #3
    Join Date
    Nov 2010
    Posts
    98
    phoenix, la, san diego1, sandiego2
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    Enteracloud Solutions //
    Scalable Enterprise Architecture for Small and Medium Businesses
    www.enteracloud.com

  4. #4
    Join Date
    Mar 2006
    Location
    Reston, VA
    Posts
    3,132
    what your looking for is a VPLS service just about every tier1 network provides this.

    ABV has a 'e-mesh' product which is a VPLS and is around 1200 per 1G connection for access speed and they start at $10/Mbps for data across the ports. (braces for the low ballers to come and complain about the price)

    Some will call it MPLS, others VPLS.. in the end of the day it rides over MPLS. But you can probably expect 1-3/Mbps on a whole for the service.

    *disclaimer: yes I am fully aware most companies will do 1/Mbps sub for MPLS/POINT TO POINT, NOT VPLS. And no some jerk off who has a point to point and provides a "vlan" between two locations is not a VPLS.

  5. #5
    Join Date
    Nov 2010
    Posts
    98
    Thank you for that follow up.

    Basically we have some point to points in place and we are moving to a multipoint solutions. Best guess is that it is either over an MPLS or VPLS circuit, but I am not sure. I know that we were able to do QinQ over the circuits as point to point, but as we get a multipoint circuit setup, we will basically have a layer2 handoff with jumbo frames.

    Being able to extend layer 2 connectivity with fairly reasonable latency and plenty of speed is our main goal. We have done a number of multiple location sites that had been done over frame, atm, etc, but all of those were layer3 based. Looking at the opportunities that layer 2 connectivity provides is pretty exciting to us.

    Would definitely love to hear how other people are using this or best practices, etc...
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    Enteracloud Solutions //
    Scalable Enterprise Architecture for Small and Medium Businesses
    www.enteracloud.com

  6. #6
    Join Date
    Mar 2006
    Location
    Reston, VA
    Posts
    3,132
    Quote Originally Posted by enteracloud View Post
    Thank you for that follow up.

    Basically we have some point to points in place and we are moving to a multipoint solutions. Best guess is that it is either over an MPLS or VPLS circuit, but I am not sure. I know that we were able to do QinQ over the circuits as point to point, but as we get a multipoint circuit setup, we will basically have a layer2 handoff with jumbo frames.

    Being able to extend layer 2 connectivity with fairly reasonable latency and plenty of speed is our main goal. We have done a number of multiple location sites that had been done over frame, atm, etc, but all of those were layer3 based. Looking at the opportunities that layer 2 connectivity provides is pretty exciting to us.

    Would definitely love to hear how other people are using this or best practices, etc...
    VPLS is just more/less a term, it all rides over top of MPLS. Its basically a glorified vlan/access port. You can throw your own vlan frames into it and treat it like an trunk port on a switch. Whoever you get the VPLS with will just give you a hand off and you treat it like your connecting to another switch on the other end. VLL/Point to point/MPLS is easy and cheap to do. VPLS on the other hand takes a bit better equipment to handle.

    i.e a juniper SRX in packet mode or a juniper EX4200 can handle MPLS and peel off "CCC" which is their point to point/VLL term but in order to do VPLS you'd have to dig your teeth into a mx or related series.

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