3Com 8807 Command Reference Manual page 288

286 C 19: VLAN-ACL C
HAPTER
C
ONFIGURATION OMMANDS
system-index index: Specifies the system index value of the rule. Normally, a
applied rule is assigned a globally unique index value automatically for being
indexed. You can also specify the index value for the rule, but this value may
change while the system is running. In general, you are not recommended to
specify this parameter manually.
auto: Chooses the service parameters allocated automatically by the switch.
remark-policed-service: Reallocates service parameters.
trust-dscp: Reallocates service parameters according to the DSCP values carried
by packets.
dscp dscp-value: Reallocates service parameters according to customized DSCP
values or EXP values. For IP packets, dscp-value is the DSCP priority (six bits in
length in the packet header) ranging from 0 to 63 and is set by users. For MPLS
packets, the dscp-value argument indicates the DSCP priority. In addition, the least
three bits of the value also act as the EXP flag field, which is set simultaneously
when the user specifies the dscp-value argument.
untrusted dscp dscp-value cos cos-value local-precedence local-precedence
drop-priority drop-level: Customizes a set of service parameters. For IP packets,
dscp-value is the DSCP priority (six bits in length in the packet header) ranging
from 0 to 63 and is set by users. For MPLS packets, the dscp-value indicates the
DSCP priority value. In additional, the least three bits of the value also acts as the
EXP flag field, which is set simultaneously when the user specifies the dscp-value
argument. The local-precedence argument is local precedence, in the range of 0
to 7. The cos-value argument is 802.1p priority, in the range of 0 to 7. The
drop-level argument is drop level, in the range of 0 to 2.
Description
Use the traffic-priority command to activate an ACL for flow classification and
choose a set of service parameters for the matched flow in VLAN (only available to
ACL rules that permit packets).
Use the undo traffic-priority command to remove service parameters for the
specified flow.
The system can perform the following operations to the service parameters of the
matched flow:
1 Employ the service parameters automatically allocated by the switch. Upon
receiving a packet, the switch allocates a set of service parameters for it according
to a specific rule. To choose this mode, specify the auto keyword when executing
this command.
2 Choose service parameters from the "DSCP + Conform-Level ->
Service-parameter" mapping table according to the DSCP priority and conform
level of the packet. To choose this mode, specify the remark-policed-service
trust-dscp keyword when executing this command.
3 Choose service parameters from the " DSCP + Conform-Level ->
Service-parameter " mapping table and "EXP + Conform-Level ->
Service-parameter " mapping table according to Conform-Level and customized