BGP Confederations - MEMBER-AS vs SUB-AS

spnetwork

I see the term SUB-AS being used mostly.  But MEMBER-AS is used some places too - mostly RFC 5065.

 

I am correct in thinking these two terms are the same?

 

"An Autonomous System number which is only used and visible inside a BGP confederation."

 

I just want to make sure I haven't missed something along the way.

DarrellEscola

I just did a search through RFC 5065 and didn't find any reference to SUB-AS or SUB AUTONOMOUS SYSTEM - only MEMBER-AS and MEMBER AUTONOMOUS SYSTEM.

It looks like the writer's preference in terms - RFC 3065, the predecessor of RFC 5065 also uses MEMBER-AS.

Both Cisco and Juniper use subautonomous system in their documentation:

• http://www.cisco.com/en/US/docs/net_mgmt/ip_solution_center/3.2/mpls/user/guide/11_isc.html
• http://www.juniper.net/techpubs/software/jseries/junos84/jseries84-config-guide-basic/jN2AD2A.html

It looks like two terms for the same thing to me...

spnetwork

Thanks Darrell.

 

I kind of found the same thing.  It seems like the term "sub-as" took off more though.

 

Maybe because people read vendor docs more than RFCs?

 

It is called the CCIE and not the IETF_CIE.  So I guess SUB-AS is right.