Supported Platforms
Related Documentation
- QFabric System, QFX Series standalone switches
- Understanding Applying CoS Classifiers and Rewrite Rules to Interfaces
- Defining CoS Unicast BA Classifiers (DSCP, DSCP IPv6, IEEE 802.1p)
- QFX Series standalone switches
- Understanding CoS MPLS EXP Classifiers and Rewrite Rules
- Configuring Rewrite Rules for MPLS EXP Classifiers
Configuring a Global MPLS EXP Classifier
EXP packet classification associates incoming packets with a particular MPLS CoS servicing level. EXP behavior aggregate (BA) classifiers examine the MPLS EXP value in the packet header to determine the CoS settings applied to the packet. EXP BA classifiers allow you to set the forwarding class and loss priority of an MPLS packet based on the incoming CoS value.
You can configure as many EXP classifiers as you want, however, the switch uses only one MPLS EXP classifier as a global classifier, which is applied only on interfaces configured as family mpls. All family mpls switch interfaces use the global EXP classifier to classify MPLS traffic.
If an EXP classifier is configured, MPLS traffic on family mpls interfaces uses the EXP classifier. If an EXP classifier is not configured, then if a fixed classifier is applied to the interface, the MPLS traffic uses the fixed classifier. If no EXP classifier and no fixed classifier is applied to the interface, MPLS traffic is treated as best-effort traffic. DSCP classifiers are not applied to MPLS traffic.
 | Note: There is no default MPLS EXP classifier. If you want to use an MPLS EXP classifier, you must configure it. The MPLS EXP classifier is global and applies only to all family mpls interfaces on the switch. You can configure as many MPLS EXP classifiers as you want, but you can only use one MPLS EXP classifier on switch interfaces at any time. |
To configure a unicast MPLS EXP classifier using the CLI:
- Create an EXP classifier and associate it with a forwarding
class, a loss priority, and a code point:
[edit class-of-service classifiers]
user@switch# set (dscp | ieee-802.1 | exp) classifier-name forwarding-class forwarding-class-name loss-priority level code-points [aliases] [bit-patterns] - Apply the EXP classifier to the switch interfaces:
[edit class-of-service]
user@switch# set system-defaults classifiers exp classifier-name
Related Documentation
- QFabric System, QFX Series standalone switches
- Understanding Applying CoS Classifiers and Rewrite Rules to Interfaces
- Defining CoS Unicast BA Classifiers (DSCP, DSCP IPv6, IEEE 802.1p)
- QFX Series standalone switches
- Understanding CoS MPLS EXP Classifiers and Rewrite Rules
- Configuring Rewrite Rules for MPLS EXP Classifiers
Published: 2014-09-26
Supported Platforms
Related Documentation
- QFabric System, QFX Series standalone switches
- Understanding Applying CoS Classifiers and Rewrite Rules to Interfaces
- Defining CoS Unicast BA Classifiers (DSCP, DSCP IPv6, IEEE 802.1p)
- QFX Series standalone switches
- Understanding CoS MPLS EXP Classifiers and Rewrite Rules
- Configuring Rewrite Rules for MPLS EXP Classifiers
