export map

Use this command in VRF configuration mode to apply a route-map that controls which routes are exported from the VRF into the global routing table or into other VRFs. The route-map can filter routes using match clauses and modify BGP attributes using set clauses, enabling granular control over inter-VRF route export policies.

 

  • An export-map with a permit route-map that contains no match or set clauses functions as a permit-all.

  • An export-map with a deny route-map that contains no match or set clauses functions as a deny-all.

Use the no parameter of this command to remove the applied route-map.

Command Syntax

Copy 
export map WORD
no export map

Parameters

WORD

Specifies the name of the route-map to apply as the VRF export-map.

• match clauses filter the routes to export (for example, using prefix lists, community values, or AS path).
• set clauses adjust BGP attributes for exported routes (for example, route targets, local preference, AS path, MED).

Default

If no export-map is configured, all eligible VRF routes are exported unmodified.

Command Mode

VRF mode

Applicability

Introduced in OcNOS version 4.1. OcNOS version 7.0.0 adds support for VRF-level BGP export-maps with route-map match and set clauses, enabling granular control of exported routes and attributes.

Examples

This example shows how to configure an export-map with a route-map that filters specific prefixes and modifies their BGP attributes before exporting them from the VRF.

• The VRF vrf1 is created, with route-distinguisher 1:1 and route-target 100:1.
• The export map export-r1 is applied to control which routes vrf1 exports.
• The prefix-list p1_ipv4 permits only 121.1.1.1/32.
• The route-map export-r1 matches the permitted prefix and modifies its attributes by:
• Setting local preference to 1000
• Setting BGP community to 650:650
• Adding extended communities (route-targets) 110:1 and 220:1

As a result, only the permitted prefix (121.1.1.1/32) is exported from vrf1 with the modified BGP attributes.

Copy 
OcNOS(config)#ip vrf vrf1
OcNOS(config-vrf)#export map export-r1
OcNOS(config-vrf)#

Prefix-list Definition

Copy 
OcNOS#show running-config prefix-list
!
ip prefix-list p1_ipv4
 seq 5 permit 121.1.1.1/32
!

Route-map Definition

Copy 
OcNOS#show running-config route-map
!
route-map export-r1 permit 10
 match ip address prefix-list p1_ipv4
 set local-preference 1000
 set community 650:650
 set extcommunity rt 110:1 220:1 additive
!

VRF Configuration

Copy 
OcNOS#show running-config vrf
!
ip vrf management
!
ip vrf vrf1
 rd 1:1
 route-target both 100:1
 export map export-r1
!
ip vrf vrf2
 rd 2:2
 route-target import 100:1
 route-target both 200:1
!

BGP Configuration

Copy 
OcNOS#show running-config bgp
!
router bgp 200
 bgp auto-policy-soft-reset enable
 neighbor 5.5.5.5 remote-as 200
 neighbor 5.5.5.5 update-source lo
 !
 address-family vpnv4 unicast
 neighbor 5.5.5.5 activate
 exit-address-family
 !
 address-family ipv4 vrf vrf1
 neighbor 1.1.1.1 remote-as 100
 neighbor 1.1.1.1 activate
 neighbor 2.2.2.2 remote-as 300
 neighbor 2.2.2.2 activate
 exit-address-family
 !
 address-family ipv4 vrf vrf2
 exit-address-family
 !
 exit
!