Explains how explicit prefix lists select routes for import and export policies in a Route Control Profile policy for an L3Out.
An explicit prefix list specifies the routes that a Route Control Profile policy matches for import or export through an L3Out.
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Controls public bridge domain subnets and external transit routes.
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Uses a Route Control Profile policy (
rtctrlProfile) to define the prefix list. -
Uses an explicit route destination match rule (
rtctrlMatchRtDest) to match the prefixes.
Alternatives to Explicit Prefix Lists
Explicit prefix lists provide an alternative to the following route-advertisement methods:
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Advertise a bridge domain subnet through the relationship between the bridge domain and the L3Out.
To advertise a bridge domain subnet through an L3Out, set the subnet scope to Advertised Externally.
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Configure a subnet under the external EPG (
l3extInstP) and enable import or export route control for transit and external routes.
- Match Rules
Explains how match rules use prefixes, communities, and aggregation parameters to select routes for filtering or redistribution by a route map. - Set Rules
Defines the policies required to manage set rules associated with explicit prefixes. These rules ensure that attributes such as community and tag are correctly applied to network traffic.