FW: Final phase of four-byte AS number policy begins 1 January 2010
Hmmmm.. is this a good thing? I realise that few people go back for more ASN's after their initial one, but we are requesting them regularly for customers. What is the situation with carriers accepting them. Could a few transit providers on these lists comment on whether they are ready to handle 4byte AS Numbers in their BGP products. ...Skeeve -- Skeeve Stevens, CEO/Technical Director eintellego Pty Ltd - The Networking Specialists skeeve(a)eintellego.net / www.eintellego.net Phone: 1300 753 383, Fax: (+612) 8572 9954 Cell +61 (0)414 753 383 / skype://skeeve www.linkedin.com/in/skeeve ; facebook.com/eintellego -- NOC, NOC, who's there? -----Original Message----- From: Secretariat [mailto:apnic-no-reply(a)apnic.net] Sent: Friday, 18 December 2009 3:15 PM To: Skeeve Stevens Subject: Final phase of four-byte AS number policy begins 1 January 2010 _______________________________________________________________________ Final phase of four-byte AS number policy begins 1 January 2010 _______________________________________________________________________
From 1 January 2010, APNIC will cease to make a distinction between four-byte only and two-byte only Autonomous System (AS) numbers. Instead, all AS numbers will be considered to be four-byte AS numbers.
This change marks the third phase of the transition to four-byte AS numbers. For more information on the implementation phases of the four-byte AS number policy, please see "Policies for Autonomous System number management in the Asia Pacific region" section 6.3, "Timetable for moving from two-byte only AS numbers to four-byte AS numbers": http://www.apnic.net/policy/asn-policy.html#6.3 To learn more about how the transition to four-byte AS numbers may affect your network, see: http://icons.apnic.net/asn If you have any questions or need further assistance, please contact: helpdesk(a)apnic.net _______________________________________________________________________ APNIC Secretariat Asia Pacific Network Information Centre (APNIC) Tel: +61-7-3858-3100 PO Box 2131 Milton, QLD 4064 Australia Fax: +61-7-3858-3199 Level 1, 33 Park Road, Milton, QLD http://www.apnic.net _______________________________________________________________________
On Dec 18, 2009, at 12:02 PM, Skeeve Stevens wrote:
What is the situation with carriers accepting them.
http://meetings.apnic.net/__data/assets/pdf_file/0017/13553/huston-asn-repor...
http://webcast.apnic.net/meetings/28/apops-07-geoff-huston.mov
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Roland Dobbins
Skeeve Stevens wrote:
Hmmmm.. is this a good thing? I realise that few people go back for more ASN's after their initial one, but we are requesting them regularly for customers. What is the situation with carriers accepting them. Could a few transit providers on these lists comment on whether they are ready to handle 4byte AS Numbers in their BGP products.
There is a 'compatibility mode' - someone who does not understand the 4-byte world can build a session facing AS23456, and the adjacency will work. Of course, the carrier will end up with a lot of sessions facing 23456 which shall make debugging hard, but ultimately since most vendors support 4 byte ASN, then they should have an upgrade plan. :-) There will be the requirement to renumber the adjacency after upgrade too... Since the AS4_PATH attribute is transitive, then 16-bit-only transit networks will not destroy the 4-byte as path for other 32-bit speakers. Andy
participants (3)
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Andy Davidson
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Dobbins, Roland
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Skeeve Stevens