You can define an IP route policy and its attributes globally, and then apply them individually to interfaces and protocols. You can also form a unified database of route policies that the RIP or OSPF protocol can use for type of filtering purpose. A name or ID identifies a policy.
Under a policy you can have several sequence numbers. If you do not configure a field in a policy, the system displays the field as 0 in CLI show command output. This value indicates that the device ignores the field in the match criteria. Use the clear option to remove existing configurations for the field.
Each policy sequence number contains a set of fields. Only a subset of those fields is used when the policy is applied in a certain context. For example, if a policy has a configured set-preference field, it is used only when the policy is applied for accept purposes. This field is ignored when the policy is applied for announce or redistribute purposes.
You can only apply one policy for each purpose (RIP Announce, for example) on a given RIP interface. In this case, all sequence numbers under the policy apply to that filter. A sequence number also acts as an implicit preference; a lower sequence number is preferred.
The following tables display the accept, announce, and redistribute policies for RIP, OSPF, IS-IS and BGP. The tables also display which matching criteria apply for a certain routing policy. In these tables, 1 denotes advertise router, 2 denotes RIP gateway, and 3 denotes that external type 1 and external type 2 are the only options.
Note
For an in-policy (RIP, BGP) or an accept policy (OSPF) using a route-map, if a particular route is not explicitly denied in the accept policy or in-policy with the route-map, then the route is implicitly allowed.
For an out-policy (RIP, BGP) or a redistribute policy (RIP, OSPF, BGP) using a route-map, even if a particular route is not explicitly allowed in the redistribution policy or out-policy with the route-map, then the route is implicitly denied.
In order to permit or deny only explicit routes, configure a policy with additional sequences, where, the last sequence permits all routes that are not explicitly permitted or denied.
Note
IPv4 and IPv6 route-maps cannot be configured on the same match statement.
Announce |
Accept |
||||
---|---|---|---|---|---|
OSPF |
Direct |
RIP |
BGP |
RIP |
|
Match Protocol |
Yes |
Yes |
Yes |
Yes |
|
Match Network |
Yes |
Yes |
Yes |
Yes |
Yes |
Match IpRoute Source |
Yes1 |
Yes2 |
|||
Match NextHop |
Yes |
Yes |
Yes |
Yes |
Yes |
Match Interface |
Yes |
||||
Match Route Type |
Yes |
||||
Match Metric |
Yes |
Yes |
Yes |
Yes |
Yes |
MatchAs Path |
|||||
Match Community |
|||||
Match Community Exact |
|||||
MatchTag |
Yes |
||||
NssaPbit |
|||||
SetRoute Preference |
Yes |
||||
SetMetric TypeInternal |
|||||
SetMetric |
Yes |
Yes |
Yes |
Yes |
Yes |
SetMetric Type |
|||||
SetNextHop |
|||||
SetInject NetList |
Yes |
Yes |
Yes |
Yes |
Yes |
SetMask |
Yes |
||||
SetAsPath |
|||||
SetAsPath Mode |
|||||
Set Automatic Tag |
|||||
Set CommunityNumber |
|||||
Set CommunityMode |
|||||
SetOrigin |
|||||
SetLocal Pref |
|||||
SetOrigin EgpAs |
|||||
SetTag |
|||||
SetWeight |
Redistribute |
Accept |
|||||
---|---|---|---|---|---|---|
Direct |
Static |
RIP |
BGP |
IS-IS |
OSPF |
|
Match Protocol |
Yes |
Yes |
||||
Match Network |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Match IpRoute Source |
Yes2 |
|||||
Match NextHop |
Yes |
Yes |
Yes |
|||
Match Interface |
Yes |
|||||
Match Route Type |
Yes3 |
|||||
Match Metric |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
MatchAs Path |
||||||
Match Community |
||||||
Match Community Exact |
||||||
MatchTag |
Yes |
|||||
Set NSSA Bit |
Yes |
Yes |
Yes |
Yes |
Yes |
|
SetRoute Preference |
||||||
SetMetric TypeInternal |
||||||
SetMetric |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
SetMetric Type |
Yes |
Yes |
Yes |
Yes |
Yes |
|
SetNextHop |
Yes |
|||||
Set Inject NetList |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
SetMask |
||||||
SetAsPath |
||||||
SetAsPath Mode |
||||||
Set Automatic Tag |
||||||
Set CommunityNumber |
||||||
Set CommunityMode |
||||||
SetOrigin |
||||||
SetLocal Pref |
||||||
SetOrigin EgpAs |
||||||
SetTag |
||||||
SetWeight |
Redistribute |
Accept |
||||
---|---|---|---|---|---|
Direct |
Static |
RIP |
BGP |
OSPF |
|
Match Protocol |
Yes |
Yes |
Yes |
Yes |
Yes |
Match Network |
Yes |
Yes |
Yes |
Yes |
Yes |
Match IpRoute Source |
Yes |
||||
Match NextHop |
Yes |
Yes |
Yes |
Yes |
|
Match Interface |
Yes |
||||
Match Route Type |
Yes3 |
||||
Match Metric |
Yes |
Yes |
Yes |
Yes |
Yes |
MatchAs Path |
|||||
Match Community |
|||||
Match Community Exact |
|||||
MatchTag |
Yes |
||||
Set NSSA Bit |
|||||
SetRoute Preference |
|||||
SetMetric Type Internal |
|||||
SetMetric |
Yes |
Yes |
Yes |
Yes |
Yes |
SetMetric Type |
Yes |
Yes |
Yes |
Yes |
Yes |
SetNextHop |
Yes |
||||
SetInject NetList |
Yes |
Yes |
Yes |
Yes |
Yes |
SetMask |
|||||
SetAsPath |
|||||
SetAsPath Mode |
|||||
Set Automatic Tag |
|||||
Set CommunityNumber |
|||||
Set CommunityMode |
|||||
SetOrigin |
|||||
SetLocal Pref |
|||||
SetOrigin EgpAs |
|||||
SetTag |
|||||
SetWeight |
Redistribute |
Accept |
Announce |
|||
---|---|---|---|---|---|
IPv6 Direct |
IPv6 Static |
OSPFv3 |
BGP |
BGP |
|
Match as-path |
Yes |
Yes |
|||
Match community |
Yes |
Yes |
Yes |
Yes |
Yes |
Match community-exact |
Yes |
Yes |
|||
Match extcommunity |
Yes |
Yes |
|||
Match interface |
|||||
Match local-preference |
|||||
Match metric |
Yes |
Yes |
Yes |
Yes |
Yes |
Match network |
Yes |
Yes |
Yes |
Yes |
Yes |
Match next-hop |
Yes |
Yes |
Yes |
Yes |
|
Match protocol |
|||||
Match route-source |
Yes |
||||
Match route-type |
Yes |
Yes |
|||
Match tag |
|||||
Match vrf |
|||||
Match vrfids |
|||||
Set as-path |
Yes |
Yes |
|||
Set as-path-mode |
Yes |
Yes |
|||
Set automatic-tag |
|||||
Set community |
Yes |
Yes |
|||
Set community-mode |
Yes |
Yes |
|||
Set injectlist |
Yes |
Yes |
Yes |
||
Set ip-preference |
|||||
Set local-preference |
Yes |
Yes |
|||
Set mask |
|||||
Set metric |
Yes |
Yes |
Yes |
Yes |
Yes |
Set metric-type |
|||||
Set metric-type-internal |
|||||
Set next-hop |
Yes |
Yes |
|||
Set nssa-pbit |
|||||
Set origin |
Yes |
||||
Set origin-egp-as |
|||||
Set Tag |
|||||
Set Weight |
Yes |