Set The Vlan Vpn Feature - Huawei Quidway S3500 Series Operation Manual

Operation Manual - Port
Quidway S3500 Series Ethernet Switches
been configured, the packets without VLAN Tag will be forwarded to the port that
belongs to the default VLAN. When sending the packets with VLAN Tag, if the VLAN ID
of the packet is identical to the default VLAN ID of the port, the system will remove
VLAN Tag before sending this packet.
Perform the following configuration in Ethernet port view.
Table 1-11 Set the default VLAN ID for the Ethernet port
Set the default VLAN ID for the hybrid port.
Set the default VLAN ID for the trunk port
Restore the default VLAN ID of the hybrid port to
the default value
Restore the default VLAN ID of the trunk port to
the default value
Note that:
The Trunk port and isolate-user-vlan cannot be configured simultaneously, while
the hybrid port and isolate-user-vlan can be thus configured. However, if the
default VLAN has been mapped in isolate-user-vlan, you cannot modify the default
VLAN ID until the mapping relationship has been removed.
To guarantee the proper packet transmission, the default VLAN ID of local hybrid
port or Trunk port should be identical with that of the hybrid port or Trunk port on
the peer switch.
By default, the VLAN of hybrid port and trunk port is VLAN 1 and that of the access port
is the VLAN to which it belongs.

1.2.12 Set the VLAN VPN Feature

VLAN Tag consists of 12 bits (defined by IEEE802.1Q), so Ethernet Switches can
support up to 4k VLANs. In networking, especially in MAN (Metropolitan Area Network),
a large numbers of VLANs are required to segment users. In this case, 4k VLANs are
not enough.
VLAN VPN feature can provide duplex VLAN Tags to a packet, i.e. mark the packet with
another VLAN Tag besides the original one, thus to provide 4k x 4k VLANs to meet
user's demands. At the same time, VLAN VPN feature provides the following functions:
Using the original VLAN Tag to differentiate users and services, and using the new
VLAN Tag to load service and VPN users. Through VLAN VPN configuration, Ethernet
Switches can meet the requirement of MAN.
If VLAN VPN is enabled on a port, all the packets (no matter whether it carries a VLAN
Tag or not) will be given a new Tag that specifies the default VLAN of this port.
Operation
Huawei Technologies Proprietary
1-8
Chapter 1 Ethernet Port Configuration
Command
port hybrid pvid vlan vlan_id
port trunk pvid vlan vlan_id
undo port hybrid pvid
undo port trunk pvid