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Chapter 5
Cisco CMTS Debugging Commands
debug cable l2-vpn
Examples
The following example shows typical output for the debug cable l2-vpn command when a cable modem
is mapped to an ATM PVC:
Router# debug cable l2-vpn
CMTS L2 VPN debugging is on
Router# configure terminal
Router(config)# cable l2-vpn-service atm-vc
Router(config)# cable vc-map 0007.0e03.69f9 ATM2/0 1/1
6d00h: Associating vc ATM2/0.1 1/1 to CM 0007.0e03.69f9 sid 0x1
6d00h: Writing vc-map info to sid 0x1
Router(config)#
The following example shows typical output for the debug cable l2-vpn command when a cable modem
is mapped to an IEEE 802.1Q VLAN:
Router# debug cable l2-vpn
CMTS L2 VPN debugging is on
Router# configure terminal
Router(config)# cable l2-vpn-service dot1q
Router(config)# cable dot1q-vc-map 0007.0e03.69f9 FastEthernet0/0 5
Router(config)#
Set promiscuous mode for FastEthernet0/0
Mapped DS srv flow 13 on Cable5/0 to FastEthernet0/0 VLAN 5
Mapped US srv flow 11 sid 31 on Cable5/0 to FastEthernet0/0 VLAN 5
The following example shows typical output for the debug cable l2-vpn command when a mapping is
deleted:
Router# debug cable l2-vpn
CMTS L2 VPN debugging is on
Router# configure terminal
Router(config)# no cable vc-map 0007.0e03.69f9 ATM2/0 1/1
6d00h: Disassociating vc ATM2/0.1 1/1 from CM 0007.0e03.69f9 sid 0x1
6d00h: Erasing vc-map info to sid 0x1
Router(config)#
The following example shows typical output for the conditional option. This example shows output for
traffic to and from one particular cable modem. Each debug message shows the size of the packet, the
source and destination MAC addresses, the cable interface and SID being used, and the ATM interface
and PVC/PVI being used.
Router# debug cable mac-address 000C.0807.06.05
Router# debug cable l2-vpn conditional
CMTS L2 VPN conditional debugging is on
6d00h: Fwd pkt size 74 from 000C.0807.0605 on Cable4/0:0x1 to 0900.2b00.000f on ATM2/0:1/1
6d00h: Fwd pkt size 74 from 000C.0807.0605 on Cable4/0:0x1 to 0900.07ff.ffff on ATM2/0:1/1
6d00h: Fwd pkt size 1028 from 000C.0807.0605 on Cable4/0:0x1 to 0002.4a1d.dc1d on
ATM2/0:1/1
Cisco Broadband Cable Command Reference Guide
5-44
OL-1581-08
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