[c-nsp] VPLS capable devices for two sites interconnect

Adam Vitkovsky Adam.Vitkovsky at gamma.co.uk
Sun Mar 6 04:38:37 EST 2016

> Robert Hass
> Sent: Saturday, March 05, 2016 10:00 PM
> Hi
> I'm looking for Cisco devices suitable for do interconnect of two sites. I also
> need redundancy at each site - so two clusters of two devices are required -
> mLACP capable for CE side. I cannot use regular L2 PortChannels as we're
> looking for pure => L3 solution.
> I know that ASR9001 will do the job. But I'm looking for something cheaper.
> What you can recommend ? I need total 4 x 10GE interfaces and two
> redundant AC power supplies.
> Maybe choice of VPLS is bad choice and I should look at VXLAN or OTV ? But
> what benefits will these technologies give me above VPLS ?
Hi Robert,

If it's pure L3 solution you don't really need VPLS nor mLACP.
You just need two separate links extended via PWs to other site and L3 load-sharing.
So ASR920 will do.

The mLACP feature is not available on cheap Cisco devices (ASR920)
And Cisco supports only active/passive mLACP last time I looked.
With load-sharing if one of the links/PWs fails, then only half of the traffic will be affected.


        Adam Vitkovsky
        IP Engineer

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E:      Adam.Vitkovsky at gamma.co.uk
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