R3303-HP HSR6800 Routers Layer 2 - LAN Switching Configuration Guide

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• A main interface cannot terminate VLAN-tagged packets, but you can create subinterfaces for it to
terminate VLAN-tagged packets.
• A subinterface can send and receive only VLAN-tagged packets.
• Layer 3 Ethernet subinterfaces can terminate packets whose outermost VLAN IDs match the
configured values or the outermost two layers of VLAN IDs match the configured values.
Complete the following tasks to configure VLAN termination:
Task Remarks
Configuring Dot1q
termination
Configuring unambiguous Dot1q termination
Select one of the methods.
Configuring ambiguous Dot1q termination
Configuring QinQ
termination
Configuring unambiguous QinQ termination
Configuring ambiguous QinQ termination
Enabling a VLAN termination-enabled interface to transmit broadcasts and
multicasts
Optional.
Configuring the TPID for VLAN-tagged packets Optional.
Configuring Dot1q termination
Based on the range of outermost VLAN IDs in VLAN-tagged packets that can be terminated by a
subinterface, Dot1q termination includes the following categories:
• Unambiguous Dot1q termination—Receives only VLAN-tagged packets whose outermost VLAN
IDs match the specified VLAN ID and does not allow any other VLAN-tagged packets to pass
through this subinterface. When the subinterface receives a packet, it removes the outermost VLAN
tag of the packet. When the subinterface sends out a packet, it adds a VLAN tag carrying the
specified VLAN ID to the packet.
• Ambiguous Dot1q termination—Terminates VLAN-tagged packets whose outermost VLAN IDs are
in the specified range and does not allow any other VLAN-tagged packets to pass through this
subinterface. When the subinterface receives a packet, it removes the outermost layer of tags from
the packet. When the subinterface sends out a packet, the subinterface tags the packet with a VLAN
ID:
{ For a PPPoE packet, the VLAN ID is obtained by searching PPPoE session entries.
{ For a DHCP relay packet, the VLAN ID is obtained by searching DHCP session entries.
Configuring unambiguous Dot1q termination
To configure unambiguous Dot1q termination:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A