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Cisco Broadband Cable Command Reference Guide
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Chapter 2 Cisco CMTS Configuration Commands
cable l2-vpn-service atm-vc
cable l2-vpn-service atm-vc
To enable the use of Layer 2 tunnels for the Customer Premises Equipment (CPE) traffic that is behind
cable modems so that individual CPE traffic can be routed to a particular permanent virtual connection
(PVC) on an Asynchronous Transfer Mode (ATM) interface, use the
cable l2-vpn-service atm-vc
command in global configuration mode. To disable the use of Layer 2 tunneling, use the
no
form of this
command.
cable l2-vpn-service atm-vc
no cable l2-vpn-service atm-vc
Syntax Description
This command has no arguments or keywords.
Defaults
The use of Layer 2 tunneling for ATM PVC mapping is disabled.
Command Modes
Global configuration
Command History
Usage Guidelines
This command enables the use of Layer 2 tunnels on all cable and ATM interfaces in the router—which
in turn allows you to map cable modems, on the basis of their hardware (MAC) addresses, to particular
PVCs on an ATM interface—using the
cable vc-map
command.
Examples
The following example shows how to enable the use of Layer 2 tunnels on a router so that cable modems
can be mapped to particular PVCs on an ATM interface:
Router#
config terminal
Router(config)#
cable l2-vpn-service atm-vc
Router(config)#
Related Commands
Release
Modification
12.2(11)BC3
This command was introduced for Cisco uBR7100 series and
Cisco uBR7200 series routers.
Command
Description
cable vc-map
Maps a cable modem to a particular PVC on an ATM interface.
debug cable l2-vpn
Displays debugging messages for the Layer 2 mapping of cable modems to
a particular PVC on an ATM interface.
show cable l2-vpn vc-
map
Displays the mapping of one or all cable modems to PVCs on the ATM
interfaces.