TremaでICMPを制御してみた（PINGアスキーアート）

by kooshin

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TremaͰICMPΛ੍ޚͯ͠Έͨ PINGΞεΩʔΞʔτ 2016/07/02 Trema Day #9 ؠా ߒਅ @kooshin

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ɹɹ@kooshin • ࢓ࣄ - ωοτϫʔΫͷӡ༻ɾߏங • झຯ - ζϯυίϧʔλͱ͔  ζϯυίΩϤγ with ϧʔλ - Cisco VIRLͱMPLS-TEͰζϯυίϧʔλΛ࣮ݱͯ͠Έͨ  http://qiita.com/kooshin/items/2e00cdeb53cf9cf4c51d Ω˒Ϥ˒γ ζϯ υί ζϯ ζϯ ζϯ

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γείϧʔλͰ ΞεΩʔΞʔτΛ ඳ͍ͯΈͨ

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γείϧʔλͷPING ෯70จࣈͷΩϟϯόε

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ߏ੒ - Trema + Open vSwitch OpenFlow εΠον γεί ϧʔλ γεί ϧʔλ Trema େ޷͖ Trema OpenFlow ίϯτϩʔϥ PACKET_IN PACKET_OUT ICMP Echo Request 2஋Խ Open vSwitch ݩը૾ നɿPACKET_OUTͰసૹ ࠇɿDROPʢసૹ͠ͳ͍ʣ సૹ৚݅

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؀ڥ - ECS LIVA + CISCO1812J • OpenFlowίϯτϩʔϥˍεΠον  HW ɿECS LIVA (N2806 1.6GHz)  ɹɹɹ Logitec USB LANΞμϓλ  OS ɿUbuntu 16.04  OFCɿTrema 0.10.1  OFSɿOpen vSwitch 2.5.0 • γείϧʔλ  CISCO1812-J

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OpenFlow ECS LIVA-B3-2G-32G USBϋϒʴLANΞμϓλ  Logitec LAN-GTJU3H3 USB LANΞμϓλ Logitec LAN-GTJU3 γείϧʔλ CISCO1812-J

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PINGΞεΩʔΞʔτ PINGΞεΩʔΞʔτɹ-ɹTremaେ޷͖

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ʊਓਓਓਓਓਓਓʊ ʼɹ࣮ߦʹ12෼ɹʻ ʉY^Y^Y^Y^Y^Yʉ

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஗͍ݪҼ • Tremaίϯτϩʔϥͷಈ͖  നϐΫηϧɿPACKET_OUTͰసૹ  ࠇϐΫηϧɿDROPɺPINGλΠϜΞ΢τൃੜ • ը૾ʮTremaେ޷͖ʯͷ৔߹  നϐΫηϧɿ 2726ݸ  ࠇϐΫηϧɿ 774ݸ(ඵ) => ໿12෼ Trema େ޷͖

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࣮༻తͰ͸ͳ͍  ΧΠθϯ ▼ 

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վળࡦ • Trema͔ΒΤϥʔͱͯ͠Ԡ౴͢Δ  PINGλΠϜΞ΢τ͕ൃੜ͠ͳ͍ • ICMP UnreachableΛੜ੒  ICMP Type: 3 Destination Unreachable  ICMP Code:1 Host Unreachable

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ߏ੒(վ) - Trema + Open vSwitch OpenFlow εΠον γεί ϧʔλ γεί ϧʔλ Trema OpenFlow ίϯτϩʔϥ PACKET_IN PACKET_OUT ICMP Echo Request 2஋Խ Open vSwitch ݩը૾ നɿPACKET_OUTͰసૹ ࠇɿICMP Unreachableੜ੒ Trema େ޷͖ సૹ৚݅