Deployable Multipath TCP

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Presentation transcript:

Deployable Multipath TCP Designing and Implementing a Deployable Multipath TCP Taolei Wang, Chang Liu, Siyuan Feng

01 Motivation & Goals CONTENT 02 Design 03 Implementing

01 Motivation & Goals

Cellular Network Mobile Device Server Wi-Fi Multipath Network in Mobile Devices Cellular Network Mobile Device Server Wi-Fi

Multipath Network in Datacenter

02 Design

Multipath TCP in the Stack Application Application Socket Transport Multipath TCP Network Datalink TCP1 TCP2 TCPn … Physical

Connection Setup SYN, MPTCP SYN + ACK, MPTCP ACK, MPTCP

Adding Subflow SYN, MP_JOIN(TokenB, RA) SYN/ACK, MP_JOIN(HMACB, RB) ACK, MP_JOIN(HMACA) ACK HMACA = HMAC(Key=(KeyA+KeyB), Msg=(RA+RB)) HMACB = HMAC(Key=(KeyB+KeyA), Msg=(RB+RA))

Flow Control Subflow: 101 Data: 3 Subflow: 100 Data: 1 Subflow: 200

Loss! Flow Control Subflow: 101 Data: 3 Subflow: 102 Data: 2

Encoding

03 Implementing

Implementing

Implementing Why?

MPTCP over WiFi/3G Packet-3 Packet-4 Packet-2 Packet-1

MPTCP over WiFi/3G Packet-2 Packet-1 Packet-3 Packet-4

MPTCP over WiFi/3G Packet-1 Packet-2 Packet-1 Packet-3 Packet-4

MPTCP over WiFi/3G Packet-1 Packet-1 Packet-2 Packet-3 Packet-4

MPTCP over WiFi/3G

Taolei Wang, Chang Liu, Siyuan Feng Thanks Taolei Wang, Chang Liu, Siyuan Feng