QoS Commands 267
3999. acl-name: Name of the ACL, which must be a character string starting with
an English letter (a-z or A-Z), and without any space in it.
link-group { acl-number | acl-name }: Activates Layer 2 ACLs. acl-number:
Sequence number of ACL, ranging from 4000 to 4999. acl-name: Name of ACL,
which must be a character string started with an English letter (a-z or A-Z), and
without any space in it.
rule rule: Specifies the subitem of an active ACL, ranging from 0 to 127; if not
specified, all subitems of ACL will be activated.
system-index index here is the system index for an ACL rule. When delivering a
rule, the system assigns a globally unique index to it, for convenience of later
retrieval. You can also assign a system index for it when delivering an ACL rule
with this command, but this value may change while the system is running.
Generally you are not recommended to manually assign a system index.
auto: Chooses the service parameters allocated automatically by the switch.
remark-policed-service: Reallocates service parameters.
trust-dscp: Reallocates service parameters according to packet DSCP values.
dscp dscp-value: Reallocates service parameters according to user’s DSCP values or
EXP values. For IP packets, dscp-value is the specified DSCP priority value (six bits in
the packet header) and in the range of 0 to 63; for MPLS packets, other than that
the dscp-value stands for their DSCP priority value, the three high-order bits of the
value represent the EXP flag field. Set the EXP value when defining the dscp-value.
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 specified DSCP priority value (six bits in the packet header) and in
the range of 0 to 63; for MPLS packets, other than that the dscp-value stands for
their DSCP priority value, the three high-order bits of the value represent the EXP
flag field. Set the EXP value when defining the dscp-value; local-precedence is
local precedence, in number (ranging 0 to 7) or name; cos-value is 802.1p priority,
in number (ranging 0 to 7) or name; drop-level is drop level, in number (ranging 0
to 2) or name.
n
The mapping relationship between dscp-value and EXP is:
■ When the Switch 8800 Family switch is used as the ingress PE device, for the IP
packets, EXP is matched according to the "DSCP+Conform-Level-service
parameters" mapping table; for TCP and UDP packets, the value of EXP is the
lower 3 bits of dscp-value.
■ When the Switch 8800 Family switch is used as the ingress P, the value of EXP is
the lower 3 bits of the dscp-value.
Description
Use the traffic-priority command to activate an ACL and choose a set of service
parameters for the matched traffic (only available to permitted ACL rules).
Use the undo traffic-priority command to remove service parameter setting.
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