DELL S6000-ON User Manual

Enabling Layer 2 Protocol Tunneling

To enable Layer 2 protocol tunneling, use the following command.

1.

Verify that the system is running the default CAM profile. Use this CAM profile for L2PT.
EXEC Privilege mode

show cam-profile

2. Enable protocol tunneling globally on the system.

CONFIGURATION mode

protocol-tunnel enable

3. Tunnel BPDUs the VLAN.

INTERFACE VLAN mode

protocol-tunnel stp

Specifying a Destination MAC Address for BPDUs

By default, Dell Networking OS uses a Dell Networking-unique MAC address for tunneling BPDUs. You 

can configure another value.

To specify a destination MAC address for BPDUs, use the following command.

• Overwrite the BPDU with a user-specified destination MAC address when BPDUs are tunneled across 

the provider network.
CONFIGURATION mode

protocol-tunnel destination-mac

The default is 01:01:e8:00:00:00

Setting Rate-Limit BPDUs

CAM space is allocated in sections called field processor (FP) blocks.

There are a total of 13 user-configurable FP blocks. The default number of blocks for L2PT is 0; you must 

allocate at least one to enable BPDU rate-limiting.
To set the rate-lime BPDUs, use the following commands.

1.

Create at least one FP group for L2PT.
CONFIGURATION mode

cam-acl l2acl

For details about this command, refer to 

2. Save the running-config to the startup-config.

EXEC Privilege mode

copy running-config startup-config

Service Provider Bridging

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