Install guide

MAC-Forced Forwarding 3
Figure 1: Example Ethernet network with layer 2 bridging devices separating ARs and their clients
MAC-Forced
Forwarding with
DHCP snooping
MAC-Forced Forwarding is designed to work in conjunction with DHCP
snooping. DHCP snooping looks for DHCP ACK messages sent from DHCP
servers to clients. These specify the IP address of a client, and the ARs that the
client is allowed to access. Using DHCP snooping, the EAN can dynamically
discover the clients and ARs that are attached to the network.
It is possible for a client to have multiple IP addresses, with access rights to
different ARs. The EAN keeps track of a client’s access rights by comparing the
assigned IP address with the valid ARs for that address.
access router
aggregation network
access router
application server
aggregation
network
Ethernet Access
Nodes (EANs)
client
networks
macff_s