ip possibilities - 2013 - ip interconnection panel (18-apr, 2013)
DESCRIPTION
TRANSCRIPT
Internet structure
National ISP
National ISP
National ISP
Transit ISP
Transit ISP
Regional ISP
Regional ISP
Regional ISP
Regional ISP
Local ISP
Local ISP
Local ISP
Local ISP
Local ISP
• the Internet is an interconnec*on of ~30,000 (semi-‐)autonomous service providers
• there is no central coordina*on for the management of interconnec*ons, services, and tariffs
• Internet peering ecosystem includes
many policies / many services / one Internet
• unordered subset of interconnects
• driven by business requirements underpinned by performance
• non-‐disclosure and bi-‐lateral agreements
• peering is now considered a corporate asset and legal concern
Local ISP
Local ISP
Local ISP
Local ISP
Local ISP
Transit ISP
Transit ISP
National ISP
National ISP
National ISP
Regional
ISP Regional
ISP Regional
ISP Regional
ISP
reality
tradi*onal assump*on
transit -‐ defini*on • transit is the business rela*onship where one ISP provides reach-‐ability to all des*na*ons in its rou*ng table to its customers
• transit provides connec*vity to a superset of all des*na*ons
Client Net
Client Net
Client Net
Client Net
ISP C
ISP B
ISP D
Client Net
Client Net
Client Net
Client Net
ISP A Can Reach All Destinations via Transit
Provider ISP D
Peers
Peers
ISP A Transit
peering -‐ defini*on • peering is the business rela*onship where ISPs provide to each other reach-‐ability to each predefined por*ons of their rou*ng table
• peering provides connec*vity to a subset of a provider’s customer des*na*ons
Peers
Peers
Transit
Client Net
Client Net
Client Net
Client Net
ISP C
ISP B
ISP A Client Net
Access to ISP B Prefixes Only
ISP D
Client Net
Client Net
Client Net
5 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Confiden*al
20091103 OPASTCO Peering -‐ sulrich
tradi*onal Internet peering model
• *er 1 providers have access to the en*re Internet (region) rou*ng table solely through peering rela*onships
• *er 2 providers must buy some transit from *er 1 providers
• content providers buy transit (primarily from *er 1) to provide content
Tier 1 Tier 1
Tier 2 Tier 2
Enterprise Content Enterprise
6 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Confiden*al
20091103 OPASTCO Peering -‐ sulrich
Internet peering evolu*on
• *er 1 providers have access to the en*re Internet (region) rou*ng table solely through peering rela*onships
• *er 2 providers must buy some transit from *er 1 providers
• content providers peer with access networks providing content directly onto the broadband networks
IOC / RLEC content provider Enterprise
Tier 1 Tier 1
Tier 2 Tier 2 CDN
peering ra*onale
• commonly es*mated, 10 -‐ 20% of traffic can be peered away
• even under conges*on, capacity can be upgraded and managed more effec*vely
• improve applica*on performance, reduc*on in latency – improvement in throughput
• CDNs as content providers • peering at NAPs or with ISPs
improves burstability – backup for on-‐net servers
• marke*ng -‐ CDNs tout the number of interconnec*ons they have to their customers
7
for the ISP for content providers
• reduce transit ISP service costs • upgrades require less planning and costs • greater control over rou*ng and traffic load balancing
common to both
Internet peering interconnec*on
ISP #1
ISP #6
ISP #5
ISP #4
ISP #3
ISP #2
switched ethernet
ISP #2 ISP #1
ethernet
public / shared peering
private peering
• peering between equivalent sizes of service providers (e.g. *er 2 to *er 2) shared cost private interconnec*on, equal traffic flows “no cost peering”
• peering across exchange points if convenient, of mutual benefit, technically feasible
• fee based peering unequal traffic flows, “market posi*on”
addi*onal/local resources • h[p://peeringdb.com
find a peering loca*on near you!
• MICEMN – h[p://micemn.net/ – here in minneapolis, mn – less than 2 miles from where you’re standing/siang
MICEMN par*cipants Airstream Communica*ons AITech Akamai Technologies Arvig Berbee Informa*on Networks Corpora*on Coopera*ve Network Services, LLC Enven*s Telecom Hurricane Electric Integra Telecom ipHouse MDU Ethernet Solu*ons Minnesota VoIP Paul Bunyan Communica*ons Savage Communica*ons Inc. Spiralight Network LLC TDS Telecom US Internet VISI Wikstrom Telephone Company, Inc.
THANK YOU steve ulrich ([email protected]) / @sulrich