3com S7906E インストール手順

 

4-6 

Set the 
interface not 
to trust priority 
carried in 
incoming 
voice VLAN 
traffic 

voice vlan qos cos-value 
dscp-value 

Set the priority 
trust setting 
on the 
interface 

Set the 
interface to 
trust the 
priority carried 
in incoming 
voice VLAN 
traffic 

voice vlan qos trust 

Optional 

Use either command.  

By default, an interface does not 
trust the priority carried in 
incoming voice VLAN traffic, and 
the CoS precedence value and 
the DSCP value marked for voice 
VLAN traffic are 6 and 46 
respectively.  

 

 

z 

Configure the QoS priority trust mode and priority settings for voice VLAN traffic on an interface 

before enabling voice VLAN on the interface. If the configuration order is reversed, your priority 

trust setting will fail. 

z 

The voice vlan qos cos-value dscp-value command and the voice vlan qos trust command can 

overwrite the other, whichever is configured the last.  

 

Follow these steps to set a port to operate in manual voice VLAN assignment mode: 

Enter system view 

— 

Enable the voice VLAN security 
mode 

Optional 

Enabled by default. 

Add a recognizable OUI 
address 

voice vlan mac-address oui 
mask oui-mask [ description 
text ] 

Optional 

By default, each voice VLAN 
has default OUI addresses 
configured. Refer to 

 

for the default OUI addresses 
of different vendors. 

Enter interface view 

interface interface-type 
interface-number 

— 

Configure the port to operate in 
manual voice VLAN 
assignment mode 

Required 

Disabled by default