Cisco ASR 901 Command Reference Manual page 71

Chapter 1 CLI Command Reference
l2proto-forward
To configure the forwarding of tagged Layer 2 Control Packets and dropping of untagged layer 2 control
packets, use the l2proto-forward command in interface configuration mode. To delete this
configuration, use the no form of this command.
Syntax Description
cdp
dtp
lacp
lldp
stp
udld
vtp
Defaults The default behavior is to peer the untagged layer 2 control packets and drop tagged layer 2 control
packets.
Command Modes Interface configuration (config-if)
Command History Release
15.2(2)SNG
Usage Guidelines
Use this command to forward tagged and drop untagged layer 2 control protocol packets.
Examples The following example shows how to configure the forwarding of tagged Layer 2 Control Packets and
dropping of untagged layer 2 control packets using the l2proto-forward command.
Router# configure terminal
Router#(config) interface gigabitethernet 0/1
Router(config-if)# l2proto-forward tagged cdp
OL-26031-07
l2proto-forward tagged {cdp | dtp | lacp | lldp | stp | udld | vtp}
no l2proto-forward tagged {cdp | dtp | lacp | lldp | stp | udld | vtp}
Enables Cisco Discovery Protocol (CDP) tunneling.
Enables Dynamic Trunking Protocol (DTP) tunneling.
Enables Link Aggregration Control Protocol (LACP) tunneling.
Enables Link Layer Discovery Protocol (LLDP) tunneling.
Enables Spanning Tree Protocol tunneling (STP).
Enables UniDirectional Link Detection (UDLD) protocol tunneling.
Enables Vlan Trunking Protocol (VTP) tunneling.
Modification
This command was introduced.
Cisco ASR 901 Aggregation Services Router Command Reference Guide
l2proto-forward
1-57