Reference Guide

816 | Service Provider Bridging
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Enabling Layer 2 Protocol Tunneling
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.
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 263 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
4 Set a maximum rate at which the RPM will
process BPDUs for L2PT.
Default: no rate limiting
S5000 Range: 64 to 320 kbps
protocol-tunnel rate-limit
VLAN STACKING