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next-hop-self in JC1005 - IRS28

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Explaining description about next-hop-self in JC1005 (JANOG Comment 1005 "Recommended Router Configuration in Connecting to IX"), presented in IRS28 (Internet Routing Security 28th meeting)

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next-hop-self in JC1005 - IRS28

  1. 1. JC1005 next-hop-self Yuya Kawakami (@yuyarin) Cloud Service, NTT Communications JPNAP, Internet Multifeed
  2. 2. JC1005 next-hop-self 4-5 3) Next-Hop-Self AS AS iBGP Next-Hop-Self Next-Hop-Self IX - 1) AS IX 2) - AS IGP ECMP Next-Hop-Self - Next-Hop-Self iBGP Multipath JANOG Comment 1005 https://docs.google.com/document/d/1DWVmvOMGXn_F40WWbmxox2FBc0AAsfwcMUD93d2Y-rs/edit#
  3. 3. JC1005 next-hop-self 4-5 3) Next-Hop-Self AS AS iBGP Next-Hop-Self Next-Hop-Self IX - 1) AS IX 2) - AS IGP ECMP Next-Hop-Self - Next-Hop-Self iBGP Multipath JANOG Comment 1005 https://docs.google.com/document/d/1DWVmvOMGXn_F40WWbmxox2FBc0AAsfwcMUD93d2Y-rs/edit#
  4. 4. IX (10.0.0.0/16) AS 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 iBGP Core (OSPF default originator) Access eBGP External
  5. 5. IX (10.0.0.0/16) 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 iBGP Core (OSPF default originator) Access eBGP External BGP RIB 172.16.2.0/24 10.0.2.2 (e) eBGP iBGP 172.16.2.0/24 172.16.2.0/24 AS OSPF
  6. 6. IX (10.0.0.0/16) next-hop-self 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 iBGP Core (OSPF default originator) Access eBGP External BGP RIB 172.16.2.0/24 10.0.2.2 (e) BGP RIB 172.16.2.0/24 192.168.1.1 (i) FIB 172.16.2.0/24 192.168.1.1 (i) OSPF FIB
  7. 7. IX (10.0.0.0/16) 1. next-hop-self 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 iBGP Core (OSPF default originator) Access eBGP External BGP RIB 172.16.2.0/24 10.0.2.2 (i) FIB Next Hop 10.0.2.2 OSPF FIB
  8. 8. IX (10.0.0.0/16) 1-1. OSPF IX 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 iBGP Core (OSPF default originator) Access eBGP External BGP RIB 172.16.2.0/24 10.0.2.2 (i) OSPF RIB 10.0.0.0/16 192.168.1.1 FIB 172.16.2.0/24 10.0.2.2 (iBGP) 10.0.0.0/16 192.168.1.1 (OSPF) IX OSPF (passive interface redistribute connected)
  9. 9. IX (10.0.0.0/16) 1-2-1. iBGP IX 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 iBGP Core (OSPF default originator) Access eBGP External BGP RIB 172.16.2.0/24 10.0.2.2 (i) 10.0.0.0/16 192.168.1.1 (i) FIB 172.16.2.0/24 10.0.2.2 (iBGP) 10.0.0.0/16 192.168.1.1 (iBGP) IX iBGP (redistribute connected )
  10. 10. IX (10.0.0.0/16) 1-2-2. IX MisOrigin 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 iBGP Core (OSPF default originator) Access eBGP External BGP RIB 172.16.2.0/24 10.0.2.2 (i) 10.0.0.0/16 192.168.1.1 (i) 10.0.0.0/16 10.0.9.1 (i) FIB 172.16.2.0/24 10.0.2.2 (iBGP) 10.0.0.0/16 10.0.9.1 (iBGP) NH Private Peer IX 10.9.0.1/30
  11. 11. JC1005 next-hop-self 4-5 3) Next-Hop-Self AS AS iBGP Next-Hop-Self Next-Hop-Self IX - 1) AS IX 2) - AS IGP ECMP Next-Hop-Self - Next-Hop-Self iBGP Multipath JANOG Comment 1005 https://docs.google.com/document/d/1DWVmvOMGXn_F40WWbmxox2FBc0AAsfwcMUD93d2Y-rs/edit#
  12. 12. IX (10.0.0.0/16) 2. IX 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 10.0.1.2 192.168.1.2 iBGP Core (OSPF default originator) Access eBGP External
  13. 13. IX (10.0.0.0/16) 2-1-1. OSPF IX 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 10.0.1.2 192.168.1.2 BGP RIB 172.16.2.0/24 10.0.2.2 (i) OSPF RIB 10.0.0.0/16 192.168.1.1 10.0.0.0/16 192.168.1.2 FIB 172.16.2.0/24 10.0.2.2 (iBGP) 10.0.0.0/16 192.168.1.1 (OSPF) iBGP Core (OSPF default originator) Access eBGP External
  14. 14. IX (10.0.0.0/16) 2-1-2. IGP 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 10.0.1.2 192.168.1.2 BGP RIB 172.16.2.0/24 10.0.2.2 (i) OSPF RIB 10.0.0.0/16 192.168.1.1 10.0.0.0/16 192.168.1.2 FIB 172.16.2.0/24 10.0.2.2 (iBGP) 10.0.0.0/16 192.168.1.1 (OSPF) 10.0.0.0/16 192.168.1.2 (OSPF) iBGP Core (OSPF default originator) Access eBGP External
  15. 15. JC1005 next-hop-self 4-5 3) Next-Hop-Self AS AS iBGP Next-Hop-Self Next-Hop-Self IX - 1) AS IX 2) - AS IGP ECMP Next-Hop-Self - Next-Hop-Self iBGP Multipath JANOG Comment 1005 https://docs.google.com/document/d/1DWVmvOMGXn_F40WWbmxox2FBc0AAsfwcMUD93d2Y-rs/edit#
  16. 16. IX (10.0.0.0/16) 2-1-3. … 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 10.0.1.2 192.168.1.2 BGP RIB 172.16.2.0/24 10.0.2.2 (i) OSPF RIB 10.0.0.0/16 192.168.1.1 10.0.0.0/16 192.168.1.2 FIB 172.16.2.0/24 10.0.2.2 (iBGP) 10.0.0.0/16 192.168.1.1 (OSPF) 10.0.0.0/16 192.168.1.2 (OSPF) iBGP Core (OSPF default originator) Access eBGP External
  17. 17. IX L2 10.0.2.2 10.0.1.1 172.16.2.0/24 10.0.1.2
  18. 18. L2 MAC 10.0.2.2 MAC X 10.0.1.1 172.16.2.0/24 10.0.1.2 BGP Keepalive MAC X ARP Reply MAC X MAC X MAC X ARP Table 10.0.2.2 X ARP Table 10.0.2.2 X
  19. 19. L2 MAC 10.0.2.2 MAC X 10.0.1.1 172.16.2.0/24 10.0.1.2 BGP Keepalive MAC X ARP MAC X MAC X ARP Table 10.0.2.2 X ARP Table 10.0.2.2 X
  20. 20. L2 10.0.2.2 MAC X 10.0.1.1 172.16.2.0/24 10.0.1.2 Unknown Unicast Flooding MAC X
  21. 21. IX https://www.janog.gr.jp/meeting/janog26/doc/post-ixp-touda.pdf
  22. 22. IX (10.0.0.0/16) 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 iBGP Core (OSPF default originator) Access eBGP External Transit&Peer IX iBGP IX redistribute … MisOrigin
  23. 23. JC1005 next-hop-self 4-5 3) Next-Hop-Self AS AS iBGP Next-Hop-Self Next-Hop-Self IX - 1) AS IX 2) - AS IGP ECMP Next-Hop-Self - Next-Hop-Self iBGP Multipath JANOG Comment 1005 https://docs.google.com/document/d/1DWVmvOMGXn_F40WWbmxox2FBc0AAsfwcMUD93d2Y-rs/edit#
  24. 24. IX (10.0.0.0/16) next-hop-self iBGP Multipath 10.0.2.2 10.0.1.1 172.16.2.0/24 192.168.1.1 10.0.1.2 192.168.1.2 iBGP Core (OSPF default originator) Access eBGP External BGP RIB 172.16.2.0/24 192.168.1.1 (i) 172.16.2.0/24 192.168.1.2 (i) FIB 172.16.2.0/24 192.168.1.1 (i) 172.16.2.0/24 192.168.1.2 (i) iBGP next-hop-self

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