Match Criteria; Set Changes; Access Lists; As Numbers For Bgp - Cisco Nexus 3000 Series Configuration Manual

Chapter 11 Configuring Route Policy Manager
S e n d d o c u m e n t c o m m e n t s t o n e x u s 3 k - d o c f e e d b a c k @ c i s c o . c o m

Match Criteria

You can use a variety of criteria to match a route or IP packet in a route map. Some criteria, such as BGP
community lists, are applicable only to a specific routing protocol, while other criteria, such as the IP
source or the destination address, can be used for any route or IP packet.
When Cisco NX-OS processes a route or packet through a route map, it compares the route or packet to
each of the match statements configured. If the route or packet matches the configured criteria, Cisco
NX-OS processes it based on the permit or deny configuration for that match entry in the route map and
any set criteria configured.
The match categories and parameters are as follows:
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Set Changes

Once a route or packet matches an entry in a route map, the route or packet can be changed based on one
or more configured set statements.
The set changes are as follows:
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Access Lists

IP access lists can match the packet to a number of IP packet fields such as the following:
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See the Cisco Nexus 3000 Series NX-OS Security Configuration Guide, for more information on ACLs.

AS Numbers for BGP

You can configure a list of AS numbers to match against BGP peers. If a BGP peer matches an AS
number in the list and matches the other BGP peer configuration, BGP creates a session. If the BGP peer
does not match an AS number in the list, BGP ignores the peer. You can configure the AS numbers as a
list, a range of AS numbers, or you can use an AS-path list to compare the AS numbers against a regular
expression.
BGP parameters—Match based on AS numbers, AS-path, community attributes, or extended
community attributes.
Prefix lists—Match based on an address or range of addresses.
Multicast parameters—Match based on rendezvous point, groups, or sources.
Other parameters—Match based on IP next-hop address or packet length.
BGP parameters—Change the AS-path, tag, community, extended community, dampening, local
preference, origin, or weight attributes.
Metrics—Change the route-metric, the route-tag, or the route-type.
Other parameters—Change the forwarding address or the IP next-hop address.
Source or destination IPv4 address
Protocol
Precedence
ToS
Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, NX-OS Release 5.0(3)U1(1)
Information About Route Policy Manager
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