[c-nsp] SP-grade Ethernet over TDM

Tue Sep 15 14:35:15 EDT 2009

Top posting since it's so brief.

http://www.radware.com -> they have all different manner of conversion
technologies in their product set.

Mike

--
Michael K. Smith - CISSP, GISP
Chief Technical Officer - Adhost Internet LLC mksmith at adhost.com
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> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Justin Shore
> Sent: Tuesday, September 15, 2009 10:14 AM
> To: 'Cisco-nsp'
> Subject: [c-nsp] SP-grade Ethernet over TDM
> 
> Does anyone have any suggestions for providing Ethernet links over
> bonded T1s?
> 
> We originally looked at Overture.  They claimed that their product
used
> standard MLPPP and interoped well with 7200s.  They sent out a tech to
> help configure it in a lab.  As it turns out they also require the use
> of BCP (Bridging Control Protocol).  To use BCP on a 7200 step #1 is
to
> disable IP routing (literally, 'no ip routing').  That is required to
> facilitate bridging VLANs over MLPPP bundles.  Needless to say this
> wasn't an option since our router was doing more than just terminating
> EoTDM connections.  If we had an old 7200 sitting around we probably
> could have pulled it off.  Alternately, if we have a 7600 in that colo
> with DS3 SPAs we could have done the same thing without disabling
> routing.  I'm considering replacing that 7200 with an ASR in the
future
> so perhaps this will become possible once again down the road, but not
> today.
> 
> I've also been looking at Adtran's Ethernet over TDM products.  It
> looks
> like you have to use their Total Access 5000 at the hub and then use
> their NetVanta 800 series as the CPE.  I don't know anything about the
> Total Access 5000 and can't access their documentation without an
> account (hard to sell the product when you won't let people access the
> docs beforehand).
> 
> Overture's CPEs for this application are the 140 and 180 models.  The
> price is right but the product just doesn't have a production SP-grade
> feel to it.  Management has to be done locally.  There isn't a CLI
> option which I would think would be a requirement for SPs wanting to
> either script changes or backup configurations.  It just doesn't feel
> production grade or SP-grade by any means.  It's not like their 2200
or
> 5000 products which are much better.  I've always heard good things
> about Adtran and that they are Cisco-like but I've never actually used
> them.
> 
> What I'd like to find is a device that can bond multiple DS1s together
> with standards-based MLPPP and then bridge that to an Ethernet
> interface
> behind it.  I imagine that this would interop with our 7200s nicely.
> It
> would be nice if there was some mechanism for in-line management as
> well, though I'm not sure how that would work short of pulling out a
> DS0
> for management access.  Does anyone know of such a product?  Does
> anyone
> know of any other ways of accomplishing that same or similar thing?  I
> don't know of any cisco products that can do this.  I could foresee a
> situation where I need multiple VLANs at the customer premise so the
> Adtran solution would likely fit in better with this potential need.
> 
> Thanks
>   Justin
> 
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