C
HAPTER
22
| QoS Commands
– 314 –
EXAMPLE
QoS>QCL>port 9 1
QoS>QCL>
qos qcl add This command adds or modifies a QoS control entry.
SYNTAX
qos qcl add [qcl-id] [qce-id] [qce-id-next]
{etype ethernet-type | vid vlan-id | port udp-tcp-port | dscp dscp |
tos tos-list | tag-prio tag-priority-list} class
qcl-id - A Quality Control List containing one or more classification
criteria used to determine the traffic class to which a frame is
assigned. (Range: 1-28)
qce-id - A QCL entry which specifies one of the following criteria to
be matched in the ingress frame. (Range: 1-24)
qce-id-next - Inserts the QCE before this row. If not specified, the
QCE is inserted at the bottom of the list. (Range: 1-24)
ethernet-type - This option can only be used to filter Ethernet II
formatted packets. (Range: 0x600-0xffff hex; Default: 0xffff)
A detailed listing of Ethernet protocol types can be found in RFC
1060. A few of the more common types include 0800 (IP), 0806
(ARP), 8137 (IPX).
vlan-id - VLAN identifier. (Range: 1-4095)
udp-tcp-port - Source/destination port number or range.
(Range: 0-65535)
dscp - IPv4/IPv6 DSCP priority level. (Range: 0-63)
tos-list - Type of Service level, which processes the precedence part
of the IPv4/IPv6 ToS (3 bits) as an index to the eight QoS Class
values. (Range: 0-7)
tag-priority-list - Uses the User Priority value (3 bits as defined by
IEEE 802.1p) as an index to the eight QoS Class values.
The default priority levels are assigned according to
recommendations in the IEEE 802.1p standard as shown in the
following table.
class - Output queue buffer. (Range: low/normal/medium/high or
1/2/3/4)
Table 36: Mapping CoS Values to Egress Queues
Priority 0123 4 5 67
Queue Normal Low Low Normal Medium Medium High High
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