Cisco Cisco Packet Data Interworking Function (PDIF)
BGP IP VRF Configuration Mode Commands
▀ route-distinguisher
▄ Command Line Interface Reference, StarOS Release 16
1626
route-distinguisher
Assigns a route distinguisher (RD) for the VRF that helps identify a virtual routing domain in a provider’s network and
allows for overlapping IP space. The route distinguisher must be a unique value on the router for each VRF.
allows for overlapping IP space. The route distinguisher must be a unique value on the router for each VRF.
Product
All
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > Context Configuration > BGP Configuration > BGP-IP VRF Configuration
configure > context context_name > router bgp as_number > ip vrf vrf_name
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-bgp-vrf)#
Syntax
route-distinguisher { as_value | ip_address } rd_value
route-distinguisher
as_value
rd_value
Identifies the target VRF by an autonomous system (AS) number.
ASN value
is a 16-bit ASN expressed as
an integer from 0 through 65535.
route-distinguisher
ip_address
rd_value
Identifies the target VRF by its IP address.
ip_address
is entered using IPv4 dotted-decimal notation.
rd_value
rd_value
is a unique route distinguisher identifier and must be an integer from 0 through 4294967295.
Usage
Use this command to assign a router distinguisher (RD) for the IP VRF. The combination of AS number or 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 assigned to a VRF cannot be changed until the existing VRF is deleted or removed and reconfigured.
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 assigned to a VRF cannot be changed until the existing VRF is deleted or removed and reconfigured.
Example
The following command assigns a router distinguisher
12345
to VRF with AS number
300
:
route-distingusher 300 12345
The following command assigns a router distinguisher
12345
to VRF with IP address
10.5.3.4
:
route-distingusher 10.5.3.4 12345