ripe atlas, a “real big” measurement network"
DESCRIPTION
presentation given by Róbert Kisteleki at NANOG 51 on 2 February 2011TRANSCRIPT
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RIPE Atlas!
A “Real Big” Measurement Network"
Robert Kisteleki!
Science Group Manager, RIPE NCC!
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2!
Introduction"
RIPE Atlas:"
• There are many Atlases, this is RIPE Atlas"
• A prototype system for a next generation Internet measurement network"
- To scale to thousands of measurement nodes"- Potentially “be everywhere”"- Started last November, we’re still just building it"
2!
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3!
Intuition: 1000 Probes"
3!
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4!
Intuition: 5000 Probes"
4!
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5!
Intuition: 10k Probes"
5!
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6!
Intuition: 20k Probes"
6!
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7!
Intuition: 50k Probes"
7!
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8!
Intuition: 10k Probes & 1 AS"
8!
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9!
Ambitious Community Effort"
Instead of building small, separate, individual & private infrastructures,"
build a huge common infrastructure "
that serves both the private goals"
and the community goals."
9!
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10!
Ambitious Community Effort"
• Individual Benefits"- Less expensive than rolling your own"- More vantage points available"- More data available"
• Community Benefits"- Unprecedented situational awareness"- Wealth of data, …"
10!
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11!
Intuition -> Plan"
• For accurate maps we need more probes"
• Deploying very many TTM boxes too expensive"
• Smaller probes "
• Easily deployable"
• USB powered"
• 24 x 365 capable"
11!
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12!
Probe Deployments"
12!
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13!
Versions"
• Version 0"- Ping to fixed targets (IPv4 & IPv6) !"- Traceroute to 1st two upstream hops !"
• Version 1"- Ping & Traceroute to variable targets"- DNS queries to variable targets"
• Version 2"- Your ideas ?"
• Upgrades are automatic"
13!
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14!
Network extent"
14!
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15!
Network extent"
15!
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16!
Network extent"
16!
updated hourly on"
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17!
Hosting = Credits = Measurements"
17!
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18!
Hosting = Credits = Measurements"
18!
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19!
Sponsorship = Credits = Measurements"
19!
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20!20!
Measurement nodes – “Probes”"
• Probe (v1 / generation 1):"- Lantronix XPortPro"- Very low power usage"- 8MB RAM, 16MB flash"- Runs uClinux"- No FPU, no MMU"- A reboot costs <15 seconds"- An SSH connection costs ~30 seconds"- We can remotely update the firmware"
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21!21!
What’s this got to do with DNS?"
• We’re already doing built-in RTT measurements to some DNS root servers, on IPv4 and IPv6"
• We plan further DNS checks in next versions"- Reachability (RTT) to specified DNS servers"- Possibly TCP/UDP checks"- Anycast instance checks"
• We’re open to suggestions"- What kind of DNS related checks would you do if you had many vantage points at your disposal?"
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Questions?"