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Washington Elementary School District WAN Proposal
WAN Line Speeds and Upgrade Path
The district WAN core will be implemented with Cisco 7206VXR routers located at the three regional hubs. In addition, at the Phoenix N.W. office, a Cisco 3725 will be used for firewall and NAT as well as the router for the local networks, and a Cisco 2651XM will be the public access router. The core routers located at the Phoenix N.W. office and the Greenway office will be connected to 11 schools via 1.544 Mbps T1 connections. The core router located at the Sunnyslope office will be connected to 10 schools via T1 connections, connected to the local network router via a high-speed serial link, and connected to the Community School via a 128Kbps BRI ISDN connection.
- Each core router will also be connected to each of the other two via four T1 point-to-point links to ensure redundancy and provide load-sharing.
- The Phoenix router will be connected via 1000BaseT copper cable to the Cisco 3725 firewall/NAT router.
- The 3725 will be connected via 100BaseT copper cable to the 2651XM public access router.
- The 2651 public access router will be connected via T1 point-to-point link to the ISP.
The network implementation must assume 2x growth in WAN throughput and 10x growth in Internet connection throughput. The links between the core routers, currently moving approximately 6Mbps via 4 T1s, will be upgraded to 2 partial T3s running at 6Mbps each. The T1 between the public access router and the Internet Service Provider will be upgraded to a partial T3 running at 15-16Mbps.