Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 1031

For details about this command, refer to CAM Allocation. 2 Save the running-config to the startup-config. EXEC Privilege mode copy running-config startup-config 3 Reload the system. EXEC Privilege mode reload 4 Set a maximum rate at which the BPDUs are processed for L2PT. VLAN STACKING mode protocol-tunnel rate-limit The default is: no rate limiting. The range is from 64 to 320 kbps. Debugging Layer 2 Protocol Tunneling To debug Layer 2 protocol tunneling, use the following command. • Display debugging information for L2PT. EXEC Privilege mode debug protocol-tunnel 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. The same is true for GARP VLAN registration protocol (GVRP). 802.1ad specifies that provider bridges participating in GVRP use a reserved destination MAC address called the Provider Bridge GVRP Address, 01-80-C2-00-00-0D, to exchange GARP PDUs instead of the GVRP Address, 01-80-C2-00-00-21, specified in 802.1Q. Only bridges in the service provider network use this destination MAC address so these bridges treat GARP PDUs originating from the customer network as normal data frames, rather than consuming them. Service Provider Bridging 1031