Cisco Cisco Packet Data Interworking Function (PDIF) Prospecto
BGP Configuration Mode Commands
▀ enforce-first-as
▄ Cisco ASR 5x00 Command Line Interface Reference
1558
enforce-first-as
Enforces the first Autonomous System (AS) for Exterior Border Gateway Protocol (eBGP) routes. An AS is a connected
group of one or more Internet Protocol prefixes run by one or more network operators which has a single and clearly
defined routing policy (RFC 1930).
group of one or more Internet Protocol prefixes run by one or more network operators which has a single and clearly
defined routing policy (RFC 1930).
Product
All
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > Context Configuration > BGP Configuration
configure > context context_name > router bgp as_number
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-bgp)#
Syntax
[ no ] enforce-first-as
no
Disables the enforcement of the first AS for Exterior Border Gateway Protocol (eBGP) routes.
enforce-first-as
Enables the enforcement of the first AS for Exterior Border Gateway Protocol (eBGP) routes.
Usage
Use this command to enforce the use of the first AS for EBGP routes.
Example
Use the following command to enable this functionality:
enforce-first-as