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  • 1.  Setting BGP AS 2 Byte format for testing

    Posted 02-09-2024 23:13

    Hi everyone.

    I am trying to set up a lab between two BGP speakers , such that one only support AS ( 2 bytes) and while the other can support AS-4 bytes format.

    Unfortunately,  both of my vMX supports AS-4 bytes format.

    Is there any command that we can  use to force to operate in AS-2 bytes format and announces AS-2 bytes compatibility in BGP open message?

    My vMX is running:

    Junos: 14.1R1.10

    Much appreciated!!



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    Be kind!!
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  • 2.  RE: Setting BGP AS 2 Byte format for testing

    Posted 02-12-2024 03:13

    Just checking - you really have a VMX instance that is 10 yrs old? JUNOS supports both AS-2 and AS-4 - when presented with a 2byte AS, it maps to prefix the leading 2 bytes with 0s when dealing with a peer that does AS-2. What are you seeing?



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    Art Stine
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    Original Message