Configuration Guide User guide

610 BigIron RX Series Configuration Guide
53-1002484-04
Configuring numbered and named ACLs
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• Enter 0 – 63 for the dscp-marking <number> parameter.
• The dscp-cos-mapping parameter takes the DSCP value you specified and compares it to
an internal QoS table, which is indexed by DSCP values. The corresponding 802.1p priority,
internal forwarding priority, and DSCP value is assigned to the packet.
For example, if you enter dscp-marking 7 and the internal QoS table is configured as
shown in Table 113, the new QoS value for the packet is:
• 802.1p (COS) value: 7
• DSCP value: 48
• Internal Forwarding Priority: 0
• Use the DSCP value in the packet’s header to alter its QoS value. Enter the following
parameter.
dscp-cos-mapping
When you enter dscp-cos-mapping, the DSCP value in the packet’s header is compared to a
column in the internal QoS table. The 802.1p priority, internal forwarding priority, and DSCP
value that are mapped to the matching column is assigned to the packet.
For example, if the DSCP value in the packet’s header is 2, using the mappings in Table 113,
the packet’s new QoS value is:
• 802.1p (COS) value: 2
• DSCP value: 15
• Internal Forwarding Priority: 6
For more information on QoS and internal forwarding queues, refer to Chapter 18, “Configuring
Quality of Service”.
Parameters to bind standard ACLs to an interface
Use the ip access-group command to bind the ACL to an interface and enter the ACL number for
<num>.
TABLE 113 Example internal QOS table mappings
DSCP value 01234567891011121314
802.1p (COS)
Value
012345671234567
DSCP Value 015203452548891011121314
Internal
Forwarding
Priority
765432101300000