Category: Presentations

New Talk “A Fresh Look At Scalable Forwarding Through Router FIB Caching”

Post author By Kaustubh Gadkari
Post date 2013-02-12

Kaustubh Gadkari gave a talk on “A Fresh Look At Scalable Forwarding Through Router FIB Caching” at NANOG57 in Orlando, FL. Slides for the talk are available in pptx or pdf.

This talk presented current research into the possibility of employing caching on router FIBs to reduce the amount of FIB memory required to forward packets. Our analysis shows that 99%+ packets can be forwarded from the cache with a cache size of 10,000 entries. Packets that caused cache misses were TCP SYNs and SYNACKs; no data packets were queued. Our analysis also shows that our caching system is robust against attacks against the cache.

This work is part of our ongoing work on the analysis of FIB caching, being advised by Christos Papadopolous and Dan Massey at Colorado State University.

Tags conference, csu, FIB caching, lacrend, lander, NANOG, predict, router hardware, talks

Presentations

new talk “Active Probing of Edge Networks: Outages During Hurricane Sandy” at NANOG57

Post author By johnh
Post date 2013-02-11

John Heidemann gave the talk “Active Probing of Edge Networks: Outages During Hurricane Sandy” at NANOG57 in Orlando Florida on Feb. 5, 2013 as part of a panel on Hurricane Sandy, hosted by James Cowie at Renesys. Slides are available at http://www.isi.edu/~johnh/PAPERS/Heidemann13b.html.

This talk summarizes our analysis of outages in edge networks at the time of Hurricane Sandy. This analysis showed U.S. networks had double the outage rate (from 0.2% to 0.4%) on 2012-10-30, the day after Sandy landfall, and recovered after four days. The talk was part of the panel “Internet Impacts of Hurricane Sandy”, moderated by James Cowie, with presentations by John Heidemann, USC/Information Sciences Institute; Emile Aben, RIPE NCC; Patrick Gilmore, Akamai; Doug Madory, Renesys.

This work is based on our recent technical report “A Preliminary Analysis of Network Outages During Hurricane Sandy“, joint work of John Heidemann, Lin Quan, and Yuri Pradkin.

Tags conference, lander, NANOG, network datasets, outage detection, predict, reliability, talks

Presentations

New Video About Address Utilization and Allocations on Map Browser

Post author By johnh
Post date 2011-02-01

The ANT project released a video describing Internet address allocation and how we study address utilization with IPv4 censuses. Aniruddh Rao prepared this video, working with John Heidemann and Xue Cai.

We have also updated our web-based IPv4 address browser to provide information about to what organizations each address block is allocated. The map now visualizes the whois allocation data; we thank the five regional internet registries for sharing this data with us and authorizing this visualization.

Finally, our web-based IPv4 address browser now has better time travel, with nearly 30 different census from Dec. 2005 to Nov. 2010, and we continue to update the map regularly.

Data collection for this work is through the LANDER project, and the map browser improvements are due to AMITE, both supported by DHS. Video preparation was supported by these projects and NSF through the MADCAT project.

Tags amite, Internet address space, Internet address usage, Internet topology, lander, madcat, visualization, web tools