[c-nsp] DSL network with Ethernet DSLAMS

[Robert H. Sass]

Hi
We're thinking about deploying DSL access network. Currently we have
metro network based on Catalyst switches (mostly 3560, 3750 and 6500).
BRAS will be ESR10000 and few 7206VXR/NPE-G1.

I and few questions:

1) Is any justify to create separate VLAN per each DSLAM ? (for DSL subscribers)

2) If I have two DSLAMs connected in one switch should I create
two separate VLANs, one for each DSLAM ?

3) What technology should be used at DSL modems ? PPPoE or
bridged-ppp ?

4) Are any other recommendations regarding designing DSL network based
on Catalyst L2 switches and Ethernet DSLAMS ?

Thanks,
Robert