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Back End Network

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The back end servers include SQL Server clusters (four serversin two clusters), two Microsoft Windows 2000 Active Directorydomain controllers, a MOM monitoring server, an imaging andinstallation server, a backup server, and an HTML transformationserver. These servers form a private network and do not have directInternet access, so the Back End network is private.

All Front End servers are also dual-homed on the Back Endnetwork. To be more secure, you can use a router or firewall toconnect Front End and Back End networks. The Back End network usesthe following IP addresses:

  • Network: 10.1.1.0

  • Subnet mask: 255.255.255. 0

  • Subnet broadcast address: 10.1.1.255

  • Available network addresses: 10.1.1.1 to 10.1.1.254

The network address assignment is as follows:

  • Domain controller 1: 10.1.1.1

  • Domain controller 2: 10.1.1.2

  • MOM server: 10.1.1.3

  • HTML transformation server: 10.1.1.4

  • Imaging and installation server: 10.1.1.5

  • Servers running SQL Server: 10.1.1.6 to 10.1.1.9

  • SQL Server cluster 1: 10.1.1.10

  • SQL Server cluster 2: 10.1.1.11

  • SQL Server virtual server 1: 10.1.1.12

  • SQL Server virtual server 2: 10.1.1.13

  • SAN controller 1: 10.1.1.14

  • SAN controller 2: 10.1.1.15

  • SMTP and DNS server Back End IP: 10.1.1.16

  • Backup server IP: 10.1.1.17

  • Front-end Web server Back End IPs: 10.1.1.101 to10.1.1.106

  • DHCP Scope: 10.1.1.120 to 10.1.1.150

All IP addresses in this paper are fictitious.

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