Rate-Limit Bpdus On The C-Series And S-Series; Debug Layer 2 Protocol Tunneling; Provider Backbone Bridging - Dell Force10 C150 Configuration Manual

Rate-limit BPDUs on the C-Series and S-Series

CAM space is allocated in sections called Field Processor (FP) blocks.
There are total 13 user-configurable FP blocks on the C-Series and S-Series. The default number of blocks
for L2PT is 0; you must allocate at least one to enable BPDU rate-limiting.
Step Task
1 Create at least one FP group for L2PT. See
CAM Allocation on page 289
this command.
2 Save the running-config to the startup-config.
3 Reload the system.
4 Set a maximum rate at which the RPM will
process BPDUs for L2PT.
Default: no rate limiting
C-Series Range: 64 to 640 kbps
S-Series Range: 64 to 320 kbps

Debug Layer 2 Protocol Tunneling

Task
Display debugging information for L2PT.

Provider Backbone Bridging

Provider Backbone Bridging
IEEE 802.1ad—Provider Bridges amends 802.1Q—Virtual Bridged Local Area Networks so that service
providers can use 802.1Q architecture to offer separate VLANs to customers with no coordination between
customers, and minimal coordination between customers and the provider.
802.1ad specifies that provider bridges operating Spanning Tree use a reserved destination MAC address
called the Provider Bridge Group Address, 01-80-C2-00-00-08, to exchange BPDUs instead of the Bridge
Group Address, 01-80-C2-00-00-00, originally specified in 802.1Q. Only bridges in the service provider
network use this destination MAC address so these bridges treat BPDUs originating from the customer
network as normal data frames, rather than consuming them.
Command Syntax
cam-acl l2acl
for details on
copy running-config startup-config
reload
protocol-tunnel rate-limit
is supported only on platforms:
Command Syntax
debug protocol-tunnel
c s
Command Mode
CONFIGURATION
EXEC Privilege
EXEC Privilege
VLAN STACKING
Command Mode
EXEC Privilege
Service Provider Bridging | 971