Richard,
>
>On a single PE with two VRF's, I create a RT export on VRF A and a RT
>import on VRF B, VRF A has some prefixes to export which appear in VRF B
>after approx 20 seconds, what process dictates the 20 seconds and is it
>configurable.
Until recently, importing prefixes into VRFs was done in a periodic
fashion (every 15 secs), you can (and should) tune it down to 5 seconds
via "bgp scan-time import 5" in the vpnv4 AF.
Newer releases (as well as XR and NX-OS) do this event-driven, so newer
releases don't need this.. Feature you want to look for is "BGP
Event-Based VPN Import"
oli
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