1 - Pmacct
1 - Pmacct
1 - Pmacct
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External Traffic Matrix<br />
• Router (AR or CR) to External AS or External AS to<br />
External AS (for transit providers)<br />
• Useful for analyzing the impact of external failures on<br />
the core network<br />
• Peer-AS sufficient for capacity planning and resilience<br />
analysis, See RIPE presentation on peering planning<br />
[Telkamp 2006]<br />
B. Claise, Cisco<br />
AS1 AS2 AS3 AS4 AS5<br />
AR<br />
AR<br />
Customers<br />
CR<br />
CR<br />
AR<br />
AR<br />
Customers<br />
AR<br />
CR<br />
CR<br />
AR<br />
PoP<br />
PoP<br />
Server Farm 1 Server Farm 2<br />
© 2010 Cisco Systems, Inc./Cariden Technologies, Inc..<br />
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