PPPOE design


Any design consideration on PPPoE agg & routing? Any good example of covering multiple customers or subnets ?

Devang Patel


PPPoX connections terminated on BRAS/BNG devices will use AAA, and therefore you can assign whatever routes you want to the customer with RADIUS VSAs. Typically you will aggregate or null routes for your dhcp or ppp local pools, and then a policy to advertise these routes via BGP to the rest of your network.

If some customers get static /32's for inet4 pppoe you would then also want to export the local/access routes into BGP. I would suggest using a different network range for static customers so you can better control your route advertisements.

Kind regards,