Command Modes ROUTER BGP
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.3.1.0 Introduced the dynamic application of AS notation changes
Version 8.2.1.0 Introduced
Usage 
Information
Before enabling this feature, you must enable the enable bgp four-octet-as-
supportcommand. If you disable the four-octect-support command after using dot 
or dot+ format, the AS numbers revert to asplain text.
When you apply an asnotation, it is reflected in the running-configuration. If you change the 
notation type, the running-config updates dynamically and the new notation showns.
Example
FTOS(conf)#router bgp 1
FTOS(conf-router_bgp)#bgp asnotation asdot
FTOS(conf-router_bgp)#ex
FTOS(conf)#do show run | grep bgp
router bgp 1
  bgp four-octet-as-support
  bgp asnotation asdot
FTOS(conf)#router bgp 1
FTOS(conf-router_bgp)#bgp asnotation asdot+
FTOS(conf-router_bgp)#ex
FTOS(conf)#do show run | grep bgp
router bgp 1
  bgp four-octet-as-support
  bgp asnotation asdot+
FTOS(conf)#router bgp 1
FTOS(conf-router_bgp)#bgp asnotation asplain
FTOS(conf-router_bgp)#ex
FTOS(conf)#do show run |grep bgp
router bgp 1
  bgp four-octet-as-support
FTOS(conf)#
Related 
Commands
bgp four-octet-as-support – enables 4-byte support for the BGP process.
bgp bestpath as-path ignore
Ignore the AS PATH in BGP best path calculations.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
bgp bestpath as-path ignore
To return to the default, enter the no bgp bestpath as-path ignore command.
Defaults Disabled (that is, the software considers the AS_PATH when choosing a route as best).
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