Summer Intern Showcase 2015. Hello, I am Utkarsh Goel Division: PDG Department: Foundry Web Experience Title: Research Engineer Hiring Manager: Moritz.

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Presentation transcript:

Summer Intern Showcase 2015

Hello, I am Utkarsh Goel Division: PDG Department: Foundry Web Experience Title: Research Engineer Hiring Manager: Moritz Steiner School Name: Montana State University Graduation: 2017/Computer Science Location: San Francisco, CA How I spent my summer at Akamai: Developed techniques to discover middle-boxes inside cellular networks - useful for optimizing backend connections. Investigated the performance of IPv6 in cellular networks – useful for understanding IPv6 stability for Akamai customers. Memorable moment from your summer experience: Watched MI-6 with the CEO next to me.

Detecting Middle-boxes Used Real User Monitoring (RUM) system to gather data. Compare latency seen by Ghosts and clients. Compare packet loss seen on connections with and without middle-boxes. BobAkamai server Middle-box 50 ms 3 ms 53 ms Low latency seen by Akamai. High latency seen by clients.

Detecting Middle-boxes using Packet Loss

Detecting Middle-boxes Akamai can optimize TCP connection between its servers and middle-boxes Feed information into Edgescape? High initial congestion window? No retransmits for HTTP traffic? No retransmits for HTTPS traffic for some ISPs?

Investigating IPv6 Performance What is IPv6? New version of Internet Protocol. Proposed in In deployment since last decade. Adopted by major mobile carriers such as T-Mobile, Verizon Wireless, Sprint, and AT&T. Why IPv6? IPv4 has 4.3 billion address. IPv4 address space exhausted in Need more IP address to support increasing mobile users, Internet of Things, VANETs. IPv6 provides 3.4 x 10^38 addresses - will never run out of address.

Investigating IPv6 Performance More than 93% Verizon traffic is over IPv6. More than 72% T-Mobile traffic is over IPv6. Only 12% AT&T traffic is over IPv6. Only 11% of Sprint traffic is over IPv6. T-Mobile is IPv6-only for their IPv6-capable devices Uses various types of NATs to support IPv6 connectivity. Verizon Wireless, AT&T, and Sprint have dual-stacked their IPv6-capable devices Provide native IPv6-to-IPv6 support. Provide native IPv4-to-IPV4 support.

T-Mobile IPv6 Infrastructure

Dual-Stacking Akamai content can improve Web performance T-Mobile IPv6 Performance

AT&T IPv6 Infrastructure

Dual-Stacking Akamai content can improve Web performance AT&T IPv6 Performance

Questions? Utkarsh Goel Thank you