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Configuring IPoE
About IPoE
IP over Ethernet (IPoE) enables a BRAS to connect and authenticate users over IPoE connections.
As shown in
, a BRAS connects hosts over IPoE connections, and provides AAA, security,
and DHCP services for the hosts. This solution does not require the hosts to install any client
software.
Figure 141 IPoE network diagram
IPoE access modes
IPoE supports Layer 2 and Layer 3 access modes.
•
Layer 2 access mode
Hosts directly access the BRAS. The hosts connect to the BRAS directly or through Layer 2
devices. The BRAS uses MAC addresses to identify the hosts.
•
Layer 3 access mode
Hosts use routing to access the BRAS. The hosts connect to the BRAS directly or through
Layer 3 devices. When a Layer 3 device resides between the hosts and the BRAS, the source
MAC address of packets received by the BRAS is the MAC address of the Layer 3 device.
Therefore, the BRAS uses IP addresses or VLAN IDs to identify hosts.
IPoE users
IPoE users include individual users and leased users.
Individual users
Individual users use independent IPoE services. The BRAS authenticates, authorizes, and bills
individual users based on user location and packet information. Individual users include dynamic and
static individual users.