3Com 8800 Configuration Manual page 398

3Com Switch 8800 Configuration Guide
rates, while traffic policing drops excessive packets. Therefore, traffic shaping may
increase transmission delay, but not for traffic policing.
Perform the following configurations in Ethernet port view or port group view.
Table 33-7 Configure traffic shaping
Configure traffic shaping
Remove traffic shaping setting
The switch supports traffic shaping based on port, that is, all traffic on the port is shaped.
It also supports traffic shaping for a specific queue. You can choose to achieve one of
them by selecting different parameters in the command.
See the corresponding Command Manual for details of the commands.
33.3.4 Configuring Traffic Priority
This configuration re-labels priority value for the packets that match the ACL in these
ways: using the service parameters allocated by the switch, re-allocating service
parameters by searching the mapping table based on the packet DSCP value,
re-allocating service parameters by searching the mapping table based on the
specified DSCP value and EXP value, customizing service parameters for the packets.
For interface cards, perform the following configurations in Ethernet port view or port
group view.
Table 33-8 Configure traffic priority
Configure
which only applies IP group
ACL
Remove
setting which only applies IP
group ACL
Configure
which applies IP group ACL
and link group ACL at same
time
Operation
Operation
traffic priority
traffic priority
traffic priority
traffic-shape [ queue queue-id ] max-rate
burst-size
undo traffic-shape [ queue queue-id ]
Command
traffic-priority inbound ip-group { acl-number |
acl-name } [ rule rule [ system-index index ] ] { auto
| remark-policed-service { trust-dscp | dscp
dscp-value | untrusted dscp dscp-value cos
cos-value local-precedence
drop-priority drop-level } }
undo traffic-priority
{ acl-number | acl-name } [ rule rule ]
traffic-priority inbound ip-group { acl-number |
acl-name } { rule rule link-group { acl-number |
acl-name } [ rule rule [ system-index index ] ] |
link-group { acl-number | acl-name } rule rule }
{ auto | remark-policed-service { trust-dscp |
dscp dscp-value | untrusted dscp dscp-value cos
cos-value local-precedence
drop-priority drop-level } }
33-14
Chapter 33 QoS Configuration
Command
local-precedence
inbound ip-group
local-precedence