BGP ASDOT question

[gongya001]

Cisco documentation has the following:

1.169031 is a 4-byte autonomous system number (this is dot notation for the 234567 decimal number).

when I tried to convert 234567 to asdot, I got 3.37959.

What have I missed ?

thanks !!

[Harold Ritter]

Your understanding is correct. 234567 is represented as 3.37959 in the asdot notation.

Please provide the link to the documentation and I will bring it up with the documentation team.

Regards,

[gongya001]

BGP Autonomous System Number Formats

Prior to January 2009, BGP autonomous system numbers that were allocated to companies were 2-octet numbers in the range from 1 to 65535 as described in RFC 4271, A Border Gateway Protocol 4 (BGP-4). Due to increased demand for autonomous system numbers, the Internet Assigned Number Authority (IANA) will start in January 2009 to allocate four-octet autonomous system numbers in the range from 65536 to 4294967295. RFC 5396, Textual Representation of Autonomous System (AS) Numbers, documents three methods of representing autonomous system numbers. Cisco has implemented the following two methods:

• Asplain--Decimal value notation where both 2-byte and 4-byte autonomous system numbers are represented by their decimal value. For example, 65526 is a 2-byte autonomous system number and 234567 is a 4-byte autonomous system number.
• Asdot--Autonomous system dot notation where 2-byte autonomous system numbers are represented by their decimal value and 4-byte autonomous system numbers are represented by a dot notation. For example, 65526 is a 2-byte autonomous system number and 1.169031 is a 4-byte autonomous system number (this is dot notation for the 234567 decimal number).

[Harold Ritter · Accepted solution]

Thanks for the link. I will follow up with the documentation team to get this mistake corrected.

Regards,

[gongya001]

thanks !!