1. 1 To Insert AS Origin field into APNIC IP address database Xing Li Shuang Zhu CERNET 2002-02-05

2. 2 Problem Statement (1) l The IP address allocation database –APNIC –RIPE –ARIN l The Routing database –RA –RIPE –APNIC (soon)

3. 3 Problem Statement (2) l The IP address allocation database –Accurate –Lack of the routing information l The Routing database –Less accurate –AS origin is the most important field

4. 4 Problem Statement (3) l The IP address allocation database –Distinction of PA and PI IP blocks l APNIC will propose to recommend the use of the 'status' attribute (optional) in inetnum object to assist in identifying whether address space allocations and assignments are portable or not portable. l The Routing database –Wrong IP prefix announcement in the BGP routing table from PA (holes) l Make chaos in the global routing table (-:

5. 5 Problem Statement (4) l The IP address allocation database l The Routing database l How about the use of the ’as-origin' attribute (mandatory) in inetnum object to assist –in identifying whether address space allocations and assignments are portable or not portable –in checking if the announcement is wrong

6. 6 Example BGP routing table entry for 202.120.0.0/15, version 36730882 Paths: (2 available, best #2) Advertised to peer-groups: rr-pop 6453 4538, (aggregated by 4538 202.112.61.253) 198.32.136.146 (metric 445900) from 165.117.1.133 (165.117.1.133) Origin IGP, metric 4294967294, localpref 100, valid, internal, atomic-aggregate Community: 2548:201 2548:666 3706:152 6453 4538, (aggregated by 4538 202.112.61.253) 198.32.176.38 (metric 345600) from 165.117.1.219 (165.117.1.219) Origin IGP, metric 4294967294, localpref 100, valid, internal, atomic-aggregate, best Community: 2548:204 2548:666 3706:153

7. 7 Example BGP routing table entry for 202.120.232.0/21, version 36649952 Paths: (2 available, best #2) Advertised to peer-groups: rr-pop 6453 4799 198.32.136.146 (metric 445900) from 165.117.1.133 (165.117.1.133) Origin IGP, metric 4294967294, localpref 100, valid, internal Community: 2548:201 2548:666 3706:152 6453 4799 198.32.176.38 (metric 345600) from 165.117.1.219 (165.117.1.219) Origin IGP, metric 4294967294, localpref 100, valid, internal, best Community: 2548:204 2548:666 3706:153

8. 8 APNIC Whois Database inetnum: 202.120.0.0 - 202.120.63.255 netname: SJTU-CN descr: Shanghai Jiaotong University country: CN admin-c: SW1-CN tech-c: ZG1-CN notify: dbmon@apnic.net changed: hostmaster@apnic.net 950222 source: APNIC

9. 9 RA Whois Database route: 202.120.0.0/15 descr: CERNET Center Tsinghua University Central Bldg. Bejing P. R. China origin: AS4538 member-of: RS-COMM_NSFNET notify: yjh@noc5.net.edu.cn mnt-by: MAINT-AS4538 changed: yjh@noc5.net.edu.cn 19951213 source: RADB

10. 10 Suggestions AS origin l as a mandatory field in the APNIC “inetnum” database l as a required procedure for the IP address application

11. 11 Example inetnum: 202.120.0.0 - 202.120.63.255 netname: SJTU-CN descr: Shanghai Jiaotong University country: CN origin: AS4538 admin-c: SW1-CN tech-c: ZG1-CN notify: dbmon@apnic.net changed: hostmaster@apnic.net 950222 source: APNIC

12. 12 Suggested Application Form #[NETWORK TEMPLATE V:5.0]# netname: descr: country: origin: admin-c: tech-c: remarks: changed: mnt-by: source: APNIC

13. 13 Comments l Provide APNIC’s “IRR lit” service –APNIC is the Authority for routing (AS origin) l Define PA and PI based on AS origin –Owns AS = PI, upper-stream’s AS = PA l Check the immediate use of IP addresses –Own AS or upper-stream’s AS l Evaluate Confederation membership –number of ASs

14. 14 CERNET’s Practice l Since August 2001, CERNET’s IP address allocations/assignments have “origin” field

15. 15 Questions?