13 policy routing configuration, Policy routing overview, Configuring traffic redirecting – H3C Technologies H3C S7500E Series Switches User Manual

Page 376: Policy routing configuration

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Policy Routing Configuration

The S7500E Series Ethernet Switches are distributed devices supporting Intelligent Resilient

Framework (IRF). Two S7500E series can be connected together to form a distributed IRF device. If

an S7500E series is not in any IRF, it operates as a distributed device; if the S7500E series is in an

IRF, it operates as a distributed IRF device. For introduction of IRF, see IRF Configuration Guide.

When configuring traffic redirecting, go to these sections for information you are interested in:

Policy Routing Overview

Policy routing is to make forwarding decisions based on user-defined policies. Different from the

normal destination-based routing, policy routing can make routing decisions based on the source

address and other criteria in addition to the destination IP address.

The S7500E series switches implement policy routing through QoS policies. You can configure traffic

classification and traffic redirecting action so that packets matching specific criteria will be forwarded

along the specified path, thus to implement flexible routing.

Policy routing takes precedence over destination-based routing. That is, if a packet meets the match

criteria, policy routing applies; otherwise, destination-based routing applies.

For details about QoS policies, see QoS Configuration Approaches in the ACL and QoS

Configuration Guide.

SA cards do not support redirecting traffic to the next hop. Therefore, SA cards do not support

QoS policy routing.

Configuring Traffic Redirecting

Before configuring policy routing, you need to:

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