L2Pt Tasks At A Glance; Enabling L2Pt; Restrictions And Guidelines For L2Pt - H3C S6850 Series Configuration Manual

Figure 3 L2PT network diagram

L2PT tasks at a glance

To configure L2PT, perform the following tasks:
1. Enabling L2PT or L2PT drop

Enabling L2PT

This feature is applicable only to customer-facing ports.
2. (Optional.)
Enabling L2PT

Restrictions and guidelines for L2PT

•
To enable L2PT for a Layer 2 protocol on a port, perform the following tasks:
Enable the protocol on the connected CE, and disable the protocol on the port.
Disable the protocol (for example, STP) on the PE ports connecting to an aggregate
interface on a CE when the following conditions exist:
− The protocol is running on the aggregate interface on the CE.
− The aggregate interface on the CE connects to an L2PT-enabled port on the PE.
Enable L2PT on PE ports connected to a customer network. If you enable L2PT on ports
connected to the service provider network, L2PT determines that the ports are connected
to a customer network.
Make sure the VLAN tags of Layer 2 protocol packets are not changed or deleted for the
tunneled packets to be transmitted correctly across the service provider network.
•
L2PT for LLDP supports LLDP packets from only nearest bridge agents.
•
You can enable L2PT on a member port of a Layer 2 aggregation group, but the configuration
does not take effect.
•
Do not enable L2PT on a port that is going to join a service loopback group.
Setting the destination multicast MAC address for tunneled packets
3