3Com Switch 8800 Configuration Guide
Chapter 33 QoS Configuration
33-14
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
Operation
Command
Configure traffic shaping
traffic-shape
[
queue
queue
-
id
]
max
-
rate
burst
-
size
Remove traffic shaping setting
undo traffic-shape
[
queue
queue
-
id
]
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
Operation
Command
Configure traffic priority
which only applies IP group
ACL
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
local
-
precedence
drop-priority drop
-
level
} }
Remove traffic priority
setting which only applies IP
group ACL
undo traffic-priority
inbound
ip-group
{
acl
-
number
|
acl
-
name
} [
rule
rule
]
Configure traffic priority
which applies IP group ACL
and link group ACL at same
time
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
local
-
precedence
drop-priority drop
-
level
} }
