Border Gateway Protocol IP VRF Configuration Mode Commands


Border Gateway Protocol IP VRF Configuration Mode Commands
 
 
The Border Gateway Protocol (BGP) IP VRF Configuration Mode is used to configure properties for BGP-4 routing.
 
Important: The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
 
end
Exits the current configuration mode and returns to the Exec mode.
Product
All
Privilege
Security Administrator, Administrator
Syntax
end
Usage
Return to the Exec mode.
 
exit
Exits the current configuration mode and returns to the global configuration mode.
Product
All
Privilege
Security Administrator, Administrator
Syntax
exit
Usage
Return to the context configuration mode.
 
route-distinguisher
This command assigns a route distinguisher (RD) for the VRF. The route distinguisher value must be a unique value on the router for each VRF.
Product
PDSN, GGSN
Privilege
Security Administrator, Administrator
Syntax
route-distinguisher {as_value | ip_address} rd_value
as_value
The ASN value is a 16-bit autonomous-system (AS) number from 0 through 65535.
ip_address }
ip_address is an 32 bit IP address in IPv4 dotted decimal notation.
rd_value }
rd_value is an unique route distinguisher identifier and must be an integer between 0 through 4294967295.
Usage
Use this command to assign a router distinguisher (RD) for the IP VRF. The combination of AS number/IP address and RD value must be unique for every VRF configured. The RD is added to the beginning of the pool addresses to change them into globally unique VPN-IPv4 prefixes.
If the RD is not configured for a VRF, user cannot enter into the BGP Address-Family mode for that VRF to configure the neighbors or other related BGP commands.
An RD assigined to a VRF cannot be changed untill the existing VRF is deleted or removed and reconfigured.
Example
The following command assigns a router distingusher 12345 to VRF with AS number 300:
route-distingusher 300 12345
The following command assigns a router distingusher 12345 to VRF with IP address 1.5.3.4:
route-distingusher 1.5.3.4 12345
 
route-target
This command adds a list of import and/or export route target extended communitites to the VRF.
Product
PDSN, GGSN
Privilege
Security Administrator, Administrator
Syntax
route-target {both | import | export} {as_value | ip_address} rt_value
both
This keyword creates list of import and export route targets for the VRF with same parameters. The list contains AS number or IP address along with RT value.
import
This keyword creates list of import route targets for the VRF with same parameters. The list contains AS number or IP address along with RT value.
export
This keyword creates list of import route targets for the VRF with same parameters. The list contains AS number or IP address along with RT value.
as_value
The ASN value is a 16-bit autonomous-system (AS) number from 0 through 65535.
ip_address }
ip_address is an 32 bit IP address in IPv4 dotted decimal notation.
rt_value }
rt_value is an unique route target identifier and must be an integer between 0 through 4294967295.
Usage
Use this command to create the list of export and/or import route target extended communities for VRF. It specifies the a target VPN extened community.
A maximm of 5 route targets can be defined with this command up to release 9.0.
A maximm of 10 route targets can be defined with this command from release 10.0 onvward.
Important: This command must be executed for each route target extended communities.
Example
The following command creates an export list of route target extended community 12345 for VRF with AS number 300:
route-target export 300 12345
The following command creates an export list of route target extended community 12345 for VRF with IP address 192.168.1.2:
route-target export 192.168.1.2 12345
 
 

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