[c-nsp] Require Card supporting 8 Mbps pipe.

[Tim Franklin]

Hi Sagar,

> 1.) Is 4 x E1 multi-link PPP means whether I can create a 
> Multilink and call multilink in the 4 E1 unframed interfaces.

Yes.

> 2.) Timeslots on channelised T3/E3: Whether we can combine 4 
> E3 channels in the PA-MC-T3 card or if we can in other type 
> of card, please suggest.

This would be doing something similar - take 4 E1s on the PA-MC-E3 (or
5-and-a-bit T1s on a PA-MC-T3), and run multilink across the corresponding
serial interfaces.

> 3.)Ethernet bearer rate-limited to 8M at layer-3: Is it, we 
> have to build MUX for such case....basically how will be the 
> connectivity?

This is if your provider is giving you the circuit as a LAN extenstion type
service.  It'll look like Ethernet to you, but it goes between sites (maybe
on a media convertor to fibre, maybe EoSDH, maybe EoMPLS, ...)

The provider would be doing some kind of shaping or policing in their
network to stop you sending 10M (or 100M) on the circuit, but you'd quite
probably want to put some CAR, MQC shaper, or similar on your end so the
router knows how much it can put down the line and you can queue, apply QoS
etc appropriately, rather than just firing off a 10M or 100M stream of
packets and letting the network discard them.


Really though, you need to find out from whoever is providing the circuits
to you what it is there actually selling to you.  If you have that
information, I'm sure I or plenty of other people here can help with card
selection.  But there's no point in buying extra Ethernet cards to act as
WAN interfaces if you're going to get a pair of 8M PVCs...

Regards,
Tim.

-- 
____________   Tim Franklin                 e: tim at colt.net 
\C/\O/\L/\T/   Product Engineering Manager  w: www.colt.net 
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