10 December 2007 ~ 0 Comments

PPPoE and PPPoA

Old IT stuff

I just finished the Cisco Academy teleworker connectivity chapter and learned some good stuff.

These two use a lot of the same logic, in principle the key is a router connection to the provider and NAT/PAT translation on the inside part of the network.

Steps to cover a PPPoE connection are:

  1. Configure the “outside” interface which will be used to connect yourself to the provider (note: no ip address)
  2.  Configure your dialer interface which will negotiate your IP and make sure you are connected (note: mtu size 1492)
  3. Configure NAT/PAT (note: take care of mss, max 1452)
  4. Setup DHCP for the inside network
  5. Make a default route to the provider

The PPPoA situation is very close and differs in an obligatory mode and encapsulation settings.

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