"Route-target export" is used to export routes form VRF to mBGP - i need to know the rules which tells which routes will be exported.

For example : if VRF-RED have 10 Routes which include static routes, connected routes, OSPF routes and routes it imported from VRF-YELLOW. Now if VRF-RED export and VRF-GREEN import, then which of the 10 VRF-RED's route VRF-GREEN will get?

  • packetlife.net/blog/2013/sep/26/vrf-export-maps may be what you're looking for.
    – cpt_fink
    Sep 21, 2019 at 4:44
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    – Ron Maupin
    Nov 19, 2022 at 23:52

2 Answers 2


It's depends on RT value. If you are using same RT value for VRF-YELLOW , VRF-RED and VRF-GREEN then you will get all the routes in VRF-GREEN. Otherwise, if you are using different RT value for VRF-YELLOW & VRF-RED and different for VRF-RED & VRF-GREEN, you will get all routes except the routes received from VRF-YELLOW.


Don't forget that VPN's depend on the RT's for the import/export policies. RT's are carried with the prefix along the VPNV4 space to identify the origin of the prefix.

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