C
HAPTER
36
| VLAN Commands
Configuring L2CP Tunneling
– 1147 –
Console#show dot1q-tunnel service 100
802.1Q Tunnel Service Subscriptions
Port Match C-VID S-VID
-------- ----------- -----
Eth 1/ 5 1 100
Eth 1/ 6 1 100
Console#
RELATED COMMANDS
switchport dot1q-tunnel mode (1142)
CONFIGURING L2CP TUNNELING
This section describes the commands used to configure Layer 2 Protocol
Tunne ling (L2 PT).
l2protocol-tunnel
tunnel-dmac
This command configures the destination address for Layer 2 Protocol
Tunneling (L2PT). Use the no form to restore the default setting.
SYNTAX
l2protocol-tunnel tunnel-dmac mac-address
mac-address – The switch rewrites the destination MAC address in
all upstream L2PT protocol packets (i.e, STP BPDUs) to this value,
and forwards them on to uplink ports. The MAC address must be
specified in the format xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx.
DEFAULT SETTING
01-12-CF-.00-00-02, proprietary tunnel address
COMMAND MODE
Global Configuration
COMMAND USAGE
â—† When L2PT is not used, protocol packets (such as STP) are flooded to
802.1Q access ports on the same edge switch, but filtered from 802.1Q
tunnel ports. This creates disconnected protocol domains in the
customer’s network.
Table 139: L2 Protocol Tunnel Commands
Command Function Mode
l2protocol-tunnel
tunnel-dmac
Configures the destination address for Layer 2 Protocol
Tunneling
GC
switchport
l2protocol-tunnel
Enables Layer 2 Protocol Tunneling for the specified
protocol
IC
show l2protocol-tunnel Shows settings for Layer 2 Protocol Tunneling PE
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