So rather than requiring all internal peers to be fully meshed with each other, route reflection requires only that the route reflector be fully meshed with all internal peers. Go to System > System Settings > BGP Route Reflector.Ĭonfigure the BGP AS# 65001 and the Spines that you will use as your BGP Route Reflectors. Route reflectors have the special BGP ability to readvertise routes learned from an internal peer to other internal peers.Add-paths allows non-best paths to be advertised to a peer, but it still complies with basic BGP advertisement rules such as the IBGP split horizon rule: a route learned from an IBGP neighbor cannot be readvertised to another IBGP neighbor unless the router is configured as a route reflector. Policy Group: My_Pod_Policy Fabric > Fabric Policies > Pod Policies > Profiles > Pod Profile default Configuration – APIC 3.0(1k) and later BGP Route Advertisement Rules for Multiple Paths. Go to Fabric > Fabric Policies > Pod Policies > Profiles > Pod Profile default When RFC 1966 was drafted, two other BGP route reflector specific attributes were added to prevent loops. Go to Fabric > Fabric Policies > Pod Policies > Policy Groups > Create Pod Policy GroupīGP Route Reflector Policy: default Fabric > Fabric Policies > Pod Policies > Policy Groupsģ. Removing the full mesh requirements in an IBGP topology introduces the potential for routing loops. Fabric > Fabric Policies > Pod Policies > BGP Route ReflectorĢ. Go to Fabric > Fabric Policies > Pod Policies > Policies > BGP Route Reflector default.Ĭonfigure the BGP AS# 65001 and the Spines that you will use as your BGP Route Reflectors.To configure the ACI Fabric BGP Route Reflectors, do the following: Once route reflectors have been enabled, you will be able to configure 元 connectivity outside of the fabric. To enable route reflectors in the ACI fabric, you must select the spine switches that will reflect routes, and you will need to configure a BGP autonomous system number for the fabric. The ACI fabric makes use of route reflectors (MP-BGP) to distribute external routes within the fabric.
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