ISP Peering in Mexico Javier Salazar May, 2008

History Mexican LD markets opens in 1996 New carriers were created and new networks were built New networks included cross-border fiber routes to U.S.A. Infrastructure were deployed between carriers for voice interconnection (co- location) All new infrastructure allow rapid Internet growth in México

History Carriers became the dominant ISPs Peering were built using existing infrastructure Interconnections using E3, STM-1 and STM-4 circuits Terms and conditions negotiated between both operator involved Most of the current peerings were deployed between 2000 and 2003 As of today no NAP has been built for tier 2 providers

Typical high level considerations Link utilization must keep below 80% utilization No transit provided List of prefix exchanged on a regular basis as a normal operational procedure Each operator decides how to filter incoming advertisements Use of BGP communities to change local preference attribute and influence traffic balance when there are more than one peering circuit

Routing AS AAS B AS XAS YAS Z AS 1AS 2

Current peering connections ALESTRA AS11172 TELMEX AS8151 AXTEL AS6503 TERRA AS6065 BESTEL AS18734 METRORED AS13591 PROTEL AS Mbps 45Mbps 155Mbps 600Mbps 900Mbps MARCATEL AS Mbps 300Mbps 155Mbps 45Mbps

Thank you