3com 5500-SI Manual De Usuario

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Inner VLAN Tag Priority Replication Configuration 119
The VLAN-VPN function is unavailable if the port has any of the protocols among 
GVRP, GMRP, XRN, NTDP, STP and 802.1x enabled.
Inner VLAN Tag 
Priority Replication 
Configuration
You can configure to replicate the tag priority of the inner VLAN tag of a VLAN-VPN 
packet to the outer VLAN tag to remain the original tag priority after the packet is 
inserted an outer VLAN tag.
Configuration
Prerequisites
The VLAN-VPN function is enabled.
Configuration procedure
TPID Adjusting 
Configuration
This Section describes how to configure TPID Adjusting.
Configuration
Prerequisites
Before you configure a VLAN-VPN uplink port, make sure that:
The VLAN-VPN function is not enabled.
Configuration Procedure
Display VLAN VPN 
configuration information 
about all ports
display port vlan-vpn
You can execute the display command in any 
view.
Table 106   Configure the VLAN-VPN function for a port (continued)
Operation
Command
Description
Table 107    Configure to replicate the tag priority of the inner VLAN tag
Operation
Command
Description
Enter system view
system-view
-
Enter Ethernet port view
interface 
interface-type 
interface-number 
-
Enable the inner VLAN 
Tag priority replication 
function
vlan-vpn 
inner-cos-trust 
enable
Required
By default, the inner VLAN tag priority 
replicating function  is disabled. And the priority 
of a outer VLAN tag is that of the default priority 
of the current port.
Display the VLAN-VPN 
configuration information 
about all ports
display port 
vlan-vpn
You can execute the display command in any 
view.
Table 108   Adjust TPID values for VLAN-VPN packets
Operation
Command
Description
Enter system view
system-view
-
Enter Ethernet port view
interface 
interface-type 
interface-number 
-
Set a TPID value for the port vlan-vpn tpid value
Required
Do not set the TPID value to a value that 
conflicts with known protocol type values.
Set the port to be a 
VLAN-VPN uplink port
vlan-vpn uplink 
enable
Optional
By default, the VLAN-VPN uplink function is 
disabled.