I´m currently researching for a solution for PPPoE broadband access but I´m required to use an external DHCP Server for IP addressing allocation.
I'm wondering how a DHCP Relay could be configured in a Cisco BRAS (7200, ASR1000). The following configuration was tested but using local pools:
ip unnumbered FastEthernet4/0.501
ip mtu 1492
peer default ip address pool vlan_20
ppp max-bad-auth 3
ppp authentication chap PPPoE
ip local pool vlan_20 192.168.20.11 192.168.20.20
What should I do in order to use an external DHCP Server for ip address allocation??