[c-nsp] Vlan assignments

[sheaujiun]

Hi,

I have a customer in a DSLAM/BRAS environment where they have 4 main groups
of Vlans assignments - Data, Voice, Management and Other services.

Currently there is not fixed rules as to how vlan ids are assigned to the 4
main groups. It has come to a time the network has grown to a rather huge
size and they are trying to reassign the vlan assignments.

Generally, the network is as such:

DSLAM --> aggregation switch --> BRAS

Is there a standard guideline as to how vlan assignments are to be designed?
What considerates are needed?
e.g. Is there a need to consider how different vlans are to be terminated
into the the aggregation switch if they are running VPLS?
      How the BRAS will handle the vlans coming from the aggregation?


Sheau Jiun