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Chapter 2
Cisco CMTS Configuration Commands
To use this command, you must first enable the use of IEEE 802.1Q Layer 2 tunnels, using the
Note
vpn-service dot1q
VLANs.
Examples
The following example shows how to enable the use of Layer 2 tunnels and then map specific CMs to
VLANs on a specific interface:
Router# config terminal
Router(config)# cable l2-vpn-service dot1q
Router(config)# cable dot1q-vc-map 000C.0e03.69f9 GigabitEthernet 1/0 4
Router(config)# cable dot1q-vc-map 0010.7bed.9c95 GigabitEthernet 1/0 4
Router(config)# exit
Router#
The following example shows the same command as above, but this time each VLAN is identified by the
customer that is using it:
Router# config terminal
Router(config)# cable l2-vpn-service dot1q
Router(config)# cable dot1q-vc-map 000C.0e03.69f9 GigabitEthernet 1/0 4 ENTERPRISE-CO1
Router(config)# cable dot1q-vc-map 0010.7bed.9c95 GigabitEthernet 1/0 4 ENTERPRISE-CO2
Router(config)# exit
Router#
The following example shows how to remove the Layer 2 mapping for a specific cable modem. This
particular cable modem's traffic is then routed using the normal Layer 3 routing processes.
Router# config terminal
Router(config)# no cable dot1q-vc-map 000C.0e03.69f9 GigabitEthernet 1/0 4
Router(config)# exit
Router#
Related Commands
Command
cable l2-vpn-service
dot1q
debug cable l2-vpn
show cable l2-vpn
dot1q-vc-map
OL-1581-08
command. Then use this command to map individual cable modems to specific
Description
Enables the use of Layer 2 tunnels so that traffic for individual cable
modems can be routed over a particular Virtual Local Area Network
(VLAN) on an Ethernet interface.
Displays debugging messages for the Layer 2 mapping of cable modems to
particular PVCs or VLANs.
Displays the mapping of one or all cable modems to VLANs on the router's
Ethernet interfaces.
Cisco Broadband Cable Command Reference Guide
cable dot1q-vc-map
cable l2-
2-45
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