HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Routing Confi - Page 303

Configuring policy-based routing Introduction to PBR Policy-based routing (PBR) is a routing mechanism based on user-defined policies. Different from the traditional destination-based routing mechanism, PBR enables you to use a policy (based on the source address or other criteria) to route packets. This Switch Series implements PBR by using a QoS policy. The QoS policy uses QoS traffic classification to define match criteria, and uses the redirection action of traffic behavior to guide packet forwarding. This implementation method supports both IPv4 and IPv6 unicast PBR. PBR takes precedence over destination-based routing. If a packet meets the match criteria, PBR applies; otherwise, destination-based routing applies. For more information about QoS policies, see ACL and QoS Configuration Guide. Configuring PBR Before you configure PBR, complete the following tasks: • Configure a QoS policy by configuring the match criteria and a redirection action for PBR. • Apply the QoS policy by defining the occasion to which the PBR applies. Configuring a QoS policy To configure a QoS policy: Step Command Remarks 1. Enter system view. system-view N/A 2. Create a class and enter class view. traffic classifier tcl-name [ operator { and | or } ] N/A 3. Configure the match criteria. if-match match-criteria N/A 4. Exit class view. quit N/A 5. Create a behavior and enter behavior view. traffic behavior behavior-name N/A 6. Configure a traffic redirection action. redirect next-hop { ipv4-add1 [ ipv4-add2 ] | ipv6-add1 [ interface-type interface-number ] [ ipv6-add2 [ interface-type interface-number ] ] } N/A 7. Exit behavior view. quit N/A 8. Create a policy and enter policy view. qos policy policy-name N/A 293