53-13
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 53 Using Automatic QoS
Using the Automatic QoS Macro on the Switch
Port-Specific Automatic QoS Settings—trust dscp
Use the trust dscp automatic QoS keyword for the ports that require a “trust all” type of solution. Use
this keyword only on the ports that connect to the other switches or known servers because the port will
be trusting all inbound traffic marking Layer 3 (DSCP). Trusted boundary is disabled, and no QoS
policing is configured on these types of ports.
Table 53-10 outlines the details of the configuration after executing the automatic QoS trust macro on a
port. See the “Port-Specific Automatic QoS Settings—trust dscp” section on page 53-13 for
configuration examples.
CLI Interface for Automatic QoS
These sections describe the CLI interface for automatic QoS:
• Global Automatic QoS Macro—set qos autoqos, page 53-14
• Port-Specific Automatic QoS Macro—set port qos autoqos, page 53-14
• Displaying the QoS Settings, page 53-14
• Clearing the Automatic QoS Settings, page 53-15
• Tracking the QoS Configuration, page 53-17
Table 53-10 Port Specific Settings for Trusts (trust dscp Keyword)
Item Value
Interface type Port-based
Policy source—config Local
Policy source—runtime Local (as per default)
Trust type—config Trust-dscp (all except 1q4t/2q2t ports)
Untrusted (1q4t/2q2t ports)
Trust type—runtime Trust-dscp (all except 1q4t/2q2t ports)
Untrusted (1q4t/2q2t ports)
Default CoS—config 0 (as per default)
Default CoS—runtime 0 (as per default)
Trust-device None
QoS ACL attached to port trust-dscp any (if 1q4t/2q2t port, otherwise none)
QoS ACL name ACL_IP-TRUSTDSCP (if 1q4t/2q2t port, otherwise
none)
1,
2
1. Only the IP QoS ACLs are applied (not IPX).
2. If the ACL_IP-TRUSTDSCP name is already in use, the name ACL_IP-TRUSTDSCPx, where x is a value from 1 to 99, will
be tried sequentially. If all these names are taken, a syslog message is displayed.
Trust-ext Untrusted
Cos-ext 0
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