Describes route summarization and route filtering in Cisco ACI, including L3Out external EPG and VRF-level policies for aggregating and controlling advertised prefixes
This chapter contains the following sections:
Route summarization
Explains how route summarization simplifies route tables by replacing multiple specific addresses with a single address in ACI environments.
Route summarization at the L3Out external EPG level
Explains how route summarization policies are applied at the L3Out External EPG level to achieve route summarization towards L3Out peers only.
Route filtering and aggregation at the VRF level
Explains how administrators can selectively control route advertisement and reduce fabric scale requirements through VRF-level route control policies.
Guidelines for route summarization policy configuration
Outlines considerations for route summarization policy behavior in external EPGs and BGP peer configurations.
Configure route summarization at L3out external EPG level using the GUI
Configure route summarization associated to an L3Out External EPG to achieve route summarization towards L3Out peers using the GUI.
Configure route control policy in VRF using the GUI
Configure route summarization for a VRF including route summarization policy, intra-VRF import route control, and VRF export route control.