[c-nsp] 7206VXR for DSL Termination

[Justin M. Streiner]

On Fri, 2 Dec 2005, J Springer wrote:

> We would like to convert our DSL from a Redback to a 7206VXR NPE400,
> 512M memory unit.
>
> Some questions/concerns that came up were:
>
> 1) number of VCs that this box could realistically handle

At least a thousand I'd think.  Don't quote me on that.

> 2) preference of which OC3 ATM card in the 7206

If you have lots of customers, you probably want the PA-A6 models.

> 3) feedback from anyone that has an OC3 card in a 7206 connected to an
> AFC Telliant switch

I can't help you here - no feedback to give, sorry :(

> 4) preference of config (i.e. auto build pvcs vs static config) when the
> DHCP requests will be relayed to a DHCP server for IP address
> assignment.  There will be no authentication.  Current Redback config is
> bridged-1483 with each PVC restricted to its own bridged space (secure ARP).
> 5) preferred IOS?  any additional licensing costs?

I believe I used 12.3 with the broadband aggregation feature set when I 
did a project like this about two years ago.

I originally tried to use RBE to help with some of the isolation issues, 
but it never seemed to work properly, so I had to move back to IRB.

> 6) anything else we've missed?

If the users get private IP addresses, be careful about the amount of load 
NAT will put on the box.

jms