Applying Routing Policies

To apply a routing policy, use the command appropriate to the client. Different protocols support different ways to apply policies, but there are some generalities.

Commands that use the keyword import-policy are used to change the attributes of routes installed into the switch routing table by the protocol. These commands cannot be used to determine the routes to be added to the routing table.

To remove a routing policy, use the none option in the command.

The following are examples for the BGP and RIP protocols:

configure bgp import-policy [policy-name |none]

configure rip import-policy [policy-name |none]

Commands that use the keyword route-policy control the routes advertised or received by the protocol. Following are examples for BGP and RIP:

configure bgp neighbor [remoteaddr |all] {address-family [ipv4-unicast |ipv4-multicast |ipv6-unicast |ipv6-multicast |vpnv4]} route-policy [in |out] [none | policy]

configure bgp peer-group peer-group-name {address-family [ipv4-unicast | ipv4-multicast | ipv6-unicast | ipv6-multicast |vpnv4]} route-policy [in |out] [none | policy]

configure rip vlan [vlan_name | all] route-policy [in |out] [policy-name | none]

Other examples of commands that use route policies include:

configure ospf area area-identifier external-filter [policy-map |none]

configure ospf area area-identifier interarea-filter [policy-map |none]

configure rip vlan [vlan_name |all] trusted-gateway [policy-name |none]