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C:\Users\jkriker\Google Drive\my helpndocs





BGP Messages:
Open Msg
Notification Msg
Open
Keep Alive
Update Message

BGP Attribute:

Well Known/ WK:

       Mandatory: Origin , AS-Path , Next-Hop
       Discretionary: Local-pref


Optional: 

  
Transitive: Community , Aggr
None-Transitive: MED, Origin-ID , Cluster list

RR: Originator ID, Cluster List ( Cluster ID )

BGP State:
Idle
Connected
Active
Opensent
Openconfirm
Establish

BGP Features
path Selection
add-paths
fast reroute

BGP advert rules

iBGP to iBGP : NOK Split Horizon ( uless Route Reflection)

eBGP to iBGP, eBGP to eBGP and iBGP to eBGP: OK


AS manipulation

remove private AS:  remove-private

company buy another one,

old company change AS : local-as 1

old company change AS but not advertised : local-as 1 private
























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