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Service Provider Bridging
Service provider bridging is composed of virtual local area network (VLAN) Stacking, Layer 2 Protocol
Tunneling, and Provider Backbone Bridging as described in the Dell Networking OS Configuration Guide.
This chapter includes commands for the Dell Networking operating software Layer 2 Protocol Tunneling
(L2PT). L2PT enables protocols to tunnel through an 802.1q tunnel.
For more information, refer to
(GVRP).
Important Points to Remember
•
L2PT is enabled at the interface VLAN-Stack VLAN level. For more information about Stackable VLAN
(VLAN-Stacking) commands, refer to
•
The default behavior is to disable protocol packet tunneling through the 802.1q tunnel.
•
Rate-limiting is required to protect against bridge protocol data units (BPDU) attacks.
•
A port channel (including through link aggregation control protocol [LACP]) can be configured as a
VLAN-Stack access or trunk port.
•
Address resolution protocol (ARP) packets work as expected across the tunnel.
•
Far-end failure detection (FEFD) works the same as with Layer 2 links.
•
Protocols that use Multicast MAC addresses (for example, open shortest path first [OSPF]) work as
expected and carry over to the other end of the VLAN-Stack VLAN.
debug protocol-tunnel
Enable debugging to ensure incoming packets are received and rewritten to a new MAC address.
Syntax
debug protocol-tunnel interface {in | out | both} [vlan vlan-
id] [count value]
To disable debugging, use the no debug protocol-tunnel interface {in |
out | both} [vlan vlan-id] [count value] command.
Parameters
interface
1216
VLAN
Stacking,
Spanning Tree Protocol
VLAN
Stacking.
Enter one of the following interfaces and slot/port
information:
•
For a Port Channel interface, enter the keywords port-
channel then a number. The range is from 1 to 128.
•
For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
(STP), and
GARP VLAN Registration
Service Provider Bridging
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