Reference Guide

Service Provider Bridging | 823
Implementation Information
• L2PT is available for STP, RSTP, MSTP, and PVST+ BPDUs.
• No protocol packets are tunneled when VLAN Stacking is enabled.
• L2PT requires the default CAM profile.
Enabling Layer 2 Protocol Tunneling
Specifying a Destination MAC Address for BPDUs
By default, FTOS uses a Dell Networking-unique MAC address for tunneling BPDUs. You can configure
another value.
Rate-limiting BPDUs on the S5000
CAM space is allocated in sections called Field Processor (FP) blocks.
There are total 13 user-configurable FP blocks on the S5000. The default number of blocks for L2PT is 0;
you must allocate at least one to enable BPDU rate-limiting.
Step Task Command Syntax Command Mode
1 Verify that the system is running the default CAM profile;
you must use this CAM profile for L2PT.
show cam-profile
EXEC Privilege
2 Enable protocol tunneling globally on the system.
protocol-tunnel enable
CONFIGURATION
3 Tunnel BPDUs the VLAN.
protocol-tunnel stp
INTERFACE
VLAN
Task Command Syntax Command Mode
Overwrite the BPDU with a user-specified destination
MAC address when BPDUs are tunneled across the
provider network.
Default: 01:01:e8:00:00:00
protocol-tunnel destination-mac
CONFIGURATION
Step Task Command Syntax Command Mode
1 Create at least one FP group for L2PT. See
CAM Allocation on page 273 for details on
this command.
cam-acl l2acl
CONFIGURATION
2 Save the running-config to the startup-config.
copy running-config startup-config
EXEC Privilege
3 Reload the system. reload
EXEC Privilege