Web Management Guide-R04

Table Of Contents
Chapter 5
| VLAN Configuration
L2PT Tunneling
– 191 –
recognized as a Generic Bridge PDU Tunneling (GBPT) protocol packet (i.e.,
having the destination address 01-00-0C-CD-CD-D0), it is forwarded to the
following ports in the same S-VLAN:
other access ports for which L2PT is enabled after decapsulating the
packet and restoring the proper protocol and MAC address
information.
all uplink ports.
When a Cisco-compatible L2PT packet is received on an access port, and
recognized as a CDP/VTP/STP/PVST+ protocol packet, and
L2PT is enabled on this port, it is forwarded to the following ports in the
same S-VLAN: (a) other access ports for which L2PT is enabled, and
(b) uplink ports after rewriting the destination address to make it a
GBPT protocol packet (i.e., setting the destination address to 01-00-0C-
CD-CD-D0).
L2PT is disabled on this port, it is forwarded to the following ports in
the same S-VLAN: (a) other access ports for which L2PT is disabled, and
(b) all uplink ports.
recognized as a GBPT protocol packet (i.e., having the destination address
01-00-0C-CD-CD-D0), and
L2PT is enabled on this port, it is forwarded to other access ports in the
same S-VLAN for which L2PT is enabled
L2PT is disabled on this port, it is forwarded to the following ports in
the same S-VLAN: (a) other access ports for which L2PT is disabled, and
(b) all uplink ports.
L2PT Functional Requirements
For L2PT to function properly, QinQ must be enabled on the switch (see
“Enabling QinQ Tunneling on the Switch), and the interface configured to
802.1Q uplink mode (see Adding an Interface to QinQ Tunnel”).
Configuring the
L2PT Tunnel Address
Use the VLAN > L2PT (Configure Global) page to configure the destination MAC
address for Layer 2 Protocol Tunneling.
Parameters
These parameters are displayed:
Tunnel MAC Address – The switch rewrites the destination MAC address in all
upstream L2PT protocol packets (e.g., STP BPDUs) to this value, and forwards them
on to uplink ports. (Format xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx; Default: 01-12-CF-
.00-00-02, proprietary tunnel address)