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BGP WITHDRAWN は ROUTING LOOP を生む

MRAI, BGP Widthdrawn and Packet Loss

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Page 1: MRAI, BGP Widthdrawn and Packet Loss

BGPWITHDRAWNはROUTINGLOOPを生む

Page 2: MRAI, BGP Widthdrawn and Packet Loss

10.0.0.0/24 10.0.0.0/20

NextHop(パケット転送の向き)BGPUpdate BGPWithdrawn

10.0.0.1 10.0.0.1

Page 3: MRAI, BGP Widthdrawn and Packet Loss

10.0.0.0/24 10.0.0.0/20

NextHop(パケット転送の向き)BGPUpdate BGPWithdrawn

10.0.0.1 10.0.0.1

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10.0.0.0/24 10.0.0.0/20

NextHop(パケット転送の向き)BGPUpdate BGPWithdrawn

10.0.0.1 10.0.0.1

Page 5: MRAI, BGP Widthdrawn and Packet Loss

BGPUPDATEはROUTINGLOOPを生まない

Page 6: MRAI, BGP Widthdrawn and Packet Loss

10.0.0.0/20

NextHop(パケット転送の向き)BGPUpdate BGPWithdrawn

10.0.0.1 10.0.0.1

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10.0.0.0/24 10.0.0.0/20

NextHop(パケット転送の向き)BGPUpdate BGPWithdrawn

10.0.0.1 10.0.0.1

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10.0.0.0/24 10.0.0.0/20

NextHop(パケット転送の向き)BGPUpdate BGPWithdrawn

10.0.0.1 10.0.0.1

Page 9: MRAI, BGP Widthdrawn and Packet Loss

例1:DDOS対策サービスとROUTINGLOOP

Page 10: MRAI, BGP Widthdrawn and Packet Loss

AS65000

AS65002

AS65003

ピア トランジットBGPWithdrawn NextHop(パケット転送の向き)

MRAI

AS65001

10.0.0.0/24

10.0.0.0/20

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AS65000

AS65002

AS65003

ピア トランジットBGPWithdrawn NextHop(パケット転送の向き)

MRAI

AS65001

10.0.0.0/24

10.0.0.0/20

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AS65000

AS65002

AS65003

ピア トランジットBGPWithdrawn NextHop(パケット転送の向き)

MRAI

AS65001

10.0.0.0/24

10.0.0.0/20

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例1:WORKAROUND

Page 14: MRAI, BGP Widthdrawn and Packet Loss

AS65000

AS65002

AS65003

ピア トランジットBGPWithdrawn NextHop(パケット転送の向き)

MRAI

AS65001

10.0.0.0/24

10.0.0.0/20

Page 15: MRAI, BGP Widthdrawn and Packet Loss

AS65000

AS65002

AS65003

ピア トランジットBGPWithdrawn NextHop(パケット転送の向き)

MRAI

AS65001

10.0.0.0/24

10.0.0.0/20

10.0.0.0/24

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AS65000

AS65002

AS65003

ピア トランジットBGPWithdrawn NextHop(パケット転送の向き)

MRAI

AS65001

10.0.0.0/24

10.0.0.0/20

10.0.0.0/24

Page 17: MRAI, BGP Widthdrawn and Packet Loss

AS65000

AS65002

AS65003

ピア トランジットBGPWithdrawn NextHop(パケット転送の向き)

MRAI

AS65001

10.0.0.0/20

10.0.0.0/24

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AS65000

AS65002

AS65003

ピア トランジットBGPWithdrawn NextHop(パケット転送の向き)

MRAI

AS65001

10.0.0.0/20

10.0.0.0/24

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AS65000

AS65002

AS65003

ピア トランジットBGPWithdrawn NextHop(パケット転送の向き)

MRAI

AS65001

10.0.0.0/20

10.0.0.0/24

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例2:TRAFFICENGINEERING とROUTINGLOOP

Page 21: MRAI, BGP Widthdrawn and Packet Loss

AS65000

AS65002 AS65003

AS65004 AS65005

ピア トランジット

AS65001

NextHop(パケット転送の向き)

10.0.0.0/20

10.0.0.0/24

10.0.0.0/20

MRAI

BGPWithdrawn

Page 22: MRAI, BGP Widthdrawn and Packet Loss

AS65000

AS65002 AS65003

AS65004 AS65005

ピア トランジット

AS65001

NextHop(パケット転送の向き)

10.0.0.0/20

10.0.0.0/24

10.0.0.0/20

MRAI

BGPWithdrawn

Page 23: MRAI, BGP Widthdrawn and Packet Loss

AS65000

AS65002 AS65003

AS65004 AS65005

ピア トランジット

AS65001

NextHop(パケット転送の向き)

10.0.0.0/20

10.0.0.0/24

10.0.0.0/20

MRAI

BGPWithdrawn

Page 24: MRAI, BGP Widthdrawn and Packet Loss

AS65000

AS65002 AS65003

AS65004 AS65005

ピア トランジット

AS65001

NextHop(パケット転送の向き)

10.0.0.0/20

10.0.0.0/24

10.0.0.0/20

MRAI

BGPWithdrawn

Page 25: MRAI, BGP Widthdrawn and Packet Loss

AS65000

AS65002 AS65003

AS65004 AS65005

ピア トランジット

AS65001

NextHop(パケット転送の向き)

10.0.0.0/20

10.0.0.0/24

10.0.0.0/20

MRAI

BGPWithdrawn


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