3Com 4210 9-Port Configuration Manual page 471

Configuration procedure
You can configure to trust port priority or packet priority.
procedure.
Table 1-9 Configure priority trust mode
Operation
Enter system view
Configure to
trust port
priority
Enter
Ethernet port
Configure
view
to trust port
priority
Configure
the port
priority
Exit to
system view
Configure to
trust packet
priority
Configure
to trust
packet
priority
Specify the
trusted
priority type
Configuration examples
# Configure to trust port priority and set the priority of Ethernet 1/0/1 to 7.
<Sysname> system-view
[Sysname] undo priority trust
[Sysname] interface Ethernet 1/0/1
[Sysname-Ethernet1/0/1] priority 7
Command
system-view
undo priority trust
interface
interface-type
interface-number
priority priority-level
quit
priority trust
priority-trust { cos |
dscp }
1-13
Table 1-9 shows the detailed configuration
Description
—
Optional
By default, the 4210 series
switches trust port priority.
—
Optional
By default, the port priority is
0.
—
Required
By default, the 4210 series
switches trust port priority.
If you configure to trust
packet priority without
specifying the trusted
priority type, the switch
trusts the 802.1p priority of
the received packets.
On the 4210
switches, to configure to
trust DSCP precedence of
packets, you should
configure the priority
trust command first and
then use the priority-trust
command to specify the
DSCP precedence.
Required
If you configure to trust packet
priority without specifying the
trusted priority type, the
switch trusts the 802.1p (CoS)
priority of the received
packets.
Use either
approach
series