Configuring the ECN330-switch
3011553-KDU 137 365 Uen D 2006-06-16
0x1234 is set as the custom 802.1Q ethertype on a trunk port, incoming
frames containing that ethertype are assigned to the VLAN contained in
the tag following the ethertype field, as they would be with a standard
802.1Q trunk. Frames arriving on the port containing any other
ethertype are looked upon as untagged frames, and assigned to the
native VLAN of that port.
• All members of a VLAN should be set to the same ethertype.
Command Attributes
• Mode – Set the VLAN membership mode dot1Q-Tunnel.
(Default: Hybrid)
• Dot1q-Tunnel – Configures IEEE 802.1Q tunneling (QinQ) to
segregate and preserve customer VLAN IDs for traffic crossing the
service provider network.
• TPID (0-65535) – Tag Protocol Identifier specifies the ethertype of
incoming packets on a tunnel port.
• Address Monitor Mode – Address monitoring must be enabled on a
QinQ tunnel port to properly forward traffic for the internal management
VLANs (VIDs 247-249) between the QinQ tunnel port and the SBC
connected to port 28. (Default: Automatically enabled for any QinQ
tunnel port)
Before enabling address monitoring, the ECN330-switch must first be
set to QinQ mode (see “Configuring the ECN330-switch for Normal
Operation or Tunneling Mode” on page 71), and the access port set to
a QinQ tunnel port.
When address monitoring for the QinQ tunnel port is enabled, and
incoming traffic is tagged for the internal management VLAN (247) or
the FSA VLAN (249), an outer VLAN tag of 4093 is inserted and the
packet redirected to port 28. The outer tag is removed at port 28 and the
SBC processes the packet. When a packet for VLAN 247 or 249 is sent
from port 28 to the tunnel port, a single inner tag is used and the packet
is sent as in any normal forwarding operation.
When address monitoring for the QinQ tunnel port is enabled, and the
tunnel port is a member of the dynamic management VLAN (248) and
an incoming untagged packet enters this port, the ECN330-switch
inserts an inner dummy tag, an outer tag of 248, and the packet is
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