76 Switch Feature Overview
Cisco Protocol Filtering
The Cisco Protocol Filtering feature (also known as Link Local Protocol
Filtering) filters Cisco protocols that should not normally be relayed by a
bridge. The group addresses of these Cisco protocols do not fall within the
IEEE defined range of the 802.1D MAC Bridge Filtered MAC Group
Addresses (01-80-C2-00-00-00 to 01-80-C2-00-00-0F).
For information about configuring LLPF, settings see "Configuring Port-
Based Traffic Control" on page 787.
DHCP Layer 2 Relay
This feature permits Layer 3 Relay agent functionality in Layer 2 switched
networks. The switch supports L2 DHCP relay configuration on individual
ports, link aggregation groups (LAGs) and VLANs.
For information about configuring L2 DHCP Relay settings see "Configuring
L2 and L3 Relay Features" on page 1087.
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