Operation Manual – IPv6 Routing
H3C S3610&S5510 Series Ethernet Switches
Chapter 6 Routing Policy Configuration
6-1
Chapter 6 Routing Policy Configuration
Note:
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Verify that the system already operates in IPv4/IPv6 dual-stack mode before
configuring IPv6 routing policy.
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All the IPv6 routing policy related configuration mentioned in this manual assumes
that the system already operates in IPv4/IPv6 dual-stack mode. For dual stack
mode configuration, see the part covering dual stack in the IPv6 Configuration
module.
6.1 Introduction to Routing Policy
6.1.1 Routing Policy
A routing policy is used on the router for route inspection, filtering, attributes modifying
when routes are received, advertised, or redistributed.
When distributing or receiving routing information, a router can use a routing policy to
filter routing information. For example, a router receives or advertises only routing
information that matches the criteria of a routing policy; a routing protocol redistributes
routes from another protocol only routes matching the criteria of a routing policy and
modifies some attributes of these routes to satisfy its needs using the routing policy.
To implement a routing policy, you need to define a set of match criteria according to
attributes in routing information, such as destination address, advertising router’s
address and so on. The match criteria can be set beforehand and then apply them to a
routing policy for route distribution, reception and redistribution.
6.1.2 Filters
Routing protocols can use six filters: ACL, IP prefix list, AS path ACL, community list,
extended community list and routing policy.
I. ACL
When defining an ACL, you can specify IP addresses and prefixes to match
destinations or next hops of routing information.
For ACL configuration, refer to the part discussing ACL operation.
