i-root-src-analysis 2013.key - apricot

83 Pages·2013·1.34 MB·English

by  Kurt Erik Lindqvist

www.netnod.se
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Analysis of Query SRC and Anycast

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APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])
www.netnod.se
i.root-servers.net
One of thirteen DNS root-servers
Operated by non-profit Netnod in Stockholm, SE (also
operates the Internet Exchanges)
Anycast at +40 locations around the world
APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])
www.netnod.se
The root-servers
Source: www.root-servers.org
APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])
www.netnod.se
The root-servers
All have different hardware / software
architecture, choices etc. Diversity is Good!
All have different deployment strategies
•Some are unicast, some are anycast
•Some are anycast at IXPs some are inside carrier
networks
•Some have few global nodes, and the rest are local
nodes
APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])
www.netnod.se
i.root deployments
Most locations are at IXPs, a few inside Tier-1 networks, a few
locations are where no IXP exists
Global / local distinction per peer (using no-export)
Most peers are local
APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])
www.netnod.se
i.root-servers.net
APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])
www.netnod.se
Peerings
Approx. +3000 peerings with approx 650 ASNs
Incudes route-servers at some of the larger IXPs
We are always looking for more peerings!
[email protected]
http://as8674.peeringdb.com
APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])
www.netnod.se
Analysis of query src
Based on src IPv4 / IPv6 address
Economy represented by corresponding RIR data for a prefix
Based on a 2h40m snapshot
Not 100% representative,but gives an indication of routing
and routing policies
• And the effects of routing policies
APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])
www.netnod.se
Goal of exercise
What policies are in place?
• Hot potato?
• Preference for customer over peer over transit?
What effects does peering policies have on real traffic?
How optimal is delivery of traffic to it’s source?
APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])
www.netnod.se
ASIA
APRICOT2013, Singapore, Kurt Erik Lindqvist ([email protected])