Route Control Route Map

Location in GUI: Tenants » XXX » Policies » Protocol » Route Maps for Route Control

Diagram

Classes

policies (apic.tenants)

Name	Type	Constraint	Mandatory	Default Value
route_control_route_maps	List	`[route_control_route_maps]`	No

route_control_route_maps (apic.tenants.policies)

Name	Type	Constraint	Mandatory	Default Value
name	String	Regex: `^[a-zA-Z0-9_.:-]{1,64}$`	Yes
description	String	Regex: `^[a-zA-Z0-9\\!#$%()*,-./:;@ _{\|}~?&+]{1,128}$`	No
type	Choice	`combinable`, `global`	No	`combinable`
contexts	List	`[contexts]`	No

contexts (apic.tenants.policies.route_control_route_maps)

Name	Type	Constraint	Mandatory	Default Value
name	String	Regex: `^[a-zA-Z0-9_.:-]{1,64}$`	Yes
description	String	Regex: `^[a-zA-Z0-9\\!#$%()*,-./:;@ _{\|}~?&+]{1,128}$`	No
action	Choice	`deny`, `permit`	No	`permit`
order	Integer	min: `0`, max: `9`	No	0
set_rule	String	Regex: `^[a-zA-Z0-9_.:-]{1,64}$`	No
match_rules	List	String	No

Examples

Example-1: This is a basic route-map ROUTE_MAP_1 used to control which routes are advertised/received (based on which direction the route map is applied in). The route-map type is combinable, meaning it will match the prefixes explicitly configured in the match rules, in addition to any BD subnets for which the BD is associated with an L3Out, and any external EPG subnets marked for export route control. The route map consists of a single context named DC_PREFIXES, for which the action is permit to accept all matching prefixes. The context order is set to 4 even though it is the only context in to accomodate for future flexibility if another context is to be added above this one. Within the context, a match rule DC_PREFIXES is configured, and no set rules are configured, meaning the matched prefixes will be advertised/received as is.

apic:
  tenants:
    - name: ABC
      policies:
        route_control_route_maps:
          - name: ROUTE_MAP_1
            type: combinable
            contexts:
              - name: DC_PREFIXES
                action: 'permit'
                order: 4
                match_rules:
                  - DC_PREFIXES

Examlpe-2: This route-map ROUTE_MAP_2 shows an example of the application of BGP routing policies. Its type is global, meaning matching will only occur based on the associated match rules (DC_PREFIXES in this example), and BD/extEPG subnet flags will be ignored. This behaves the same way as the well-known route-maps on NX-OS and other platforms. The route-map is configured with a set rule named SET_BGP_ATTRS, which can set a number of BGP attributes as per the overall BGP/routing design (e.g. weight, next-hop, community, metric, AS path, etc.)

apic:
  tenants:
    - name: ABC
      policies:
        route_control_route_maps:
          - name: ROUTE_MAP_1
            type: global
            contexts:
              - name: DC_PREFIXES
                action: permit
                match_rules:
                  - DC_PREFIXES
                set_rule: SET_BGP_ATTRS

Example-3: This route-map ROUTE_MAP_3 is a multi-context route-map. This is configured to treat different prefixes differently, such as to set attributes differently for each context. This example showcases a common use case with ACI multi-site when using inter-site L3Outs. The first context of DR_PREFIXES matches the DR_DC_PREFIXES and DR_DMZ_PREFIXES match rules, and will then use the PREPEND_AS set rule to prepend the remote site subnets’ AS-path to optimize the N/S traffic path. The second context of HQ_PREFIXES matches against the HQ_DC_PREFIXES and HQ_DMZ_PREFIXES match rules, but without using any set rule. If not using inter-site L3Outs, the first context action may be set to deny to prevent any routing mishaps altogether.

apic:
  tenants:
    - name: ABC
      policies:
        route_control_route_maps:
          - name: ROUTE_MAP_1
            type: global
            contexts:
              - name: DR_PREFIXES
                action: permit
                match_rules:
                  - DR_DC_PREFIXES
                  - DR_DMZ_PREFIXES
                set_rule: PREPEND_AS
              - name: HQ_PREFIXES
                action: permit
                match_rules:
                  - HQ_DC_PREFIXES
                  - HQ_DMZ_PREFIXES