Date: Tue, 29 Feb 2000 08:53:25 -0800 From: "Mark Holloway" <mholloway@flashmail.com> To: <freebsd-isp@freebsd.org> Subject: OC3 versus T1 Circuits Message-ID: <002001bf82d5$7f5a6a20$a52410ac@sierrahealth.com>
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[-- Attachment #1 --] I have a situation and maybe some of you can please advise: I have a core LAN/MAN/WAN campus with approximately 80 servers. I have about ten different remote sites throughout the city (the MAN) which clients log into a Windows NT domain and then access certain applications. Until late 1999 they were running these applications in a client/server fashion. The ten sites are all on a shared FDDI ring, but each location is a 10MB, shared, half duplex connection. The original strategy was to have a full OC3 from the main campus going to a Sprint Central Office, then have 10MB fractional OC3 going to each site (almost like Frame Relay in the MAN). However, we have since setup many Windows Terminal Servers (25 servers @ 200 clients per server) and the clients are using Citrix on their local desktops. This solution works well. But now I am wondering if the fractional OC3 is overkill?? I was thinking maybe either a T1 line or two T1 lines bonded for EACH SITE rather than a 10MB OC3 for each site would be more realistic? Is a T1 really .15 MB? Or 1.5MB? I think the slowness that most people experience is due to the nature of the FDDI. Each site averages about 60 clients, but a couple have up to 150 clients. When using Citrix everything runs fine. The only apps they would run locally are Outlook and some telnet sessions (pure ANSI, little overhead). I apologize if this is too off topic, but I've always tried to contribute to this list whenever possible. One thing to keep in mind is that for each OC3 remote connection we were going to buy a 3Com Pathbuilder 330 (designed for fractional OC3). This is approximately $12,000 + the Pathbuilder 700 Ethernet blade for the the WAN switch at the main campus (another several thousand dollars). A Cisco 2500 or 2600 with bonded T1 is under $2000. PLEASE, if anyone has any insite, feedback, or comments, I'd really appreciate it. Regards, Mark [-- Attachment #2 --] <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" http-equiv=Content-Type> <META content="MSHTML 5.00.2314.1000" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>I have a situation and maybe some of you can please advise:</FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>I have a core LAN/MAN/WAN campus with approximately 80 servers. I have about ten different remote sites throughout the city (the MAN) which clients log into a Windows NT domain and then access certain applications. Until late 1999 they were running these applications in a client/server fashion. The ten sites are all on a shared FDDI ring, but each location is a 10MB, shared, half duplex connection. The original strategy was to have a full OC3 from the main campus going to a Sprint Central Office, then have 10MB fractional OC3 going to each site (almost like Frame Relay in the MAN). However, we have since setup many Windows Terminal Servers (25 servers @ 200 clients per server) and the clients are using Citrix on their local desktops. This solution works well. But now I am wondering if the fractional OC3 is overkill?? I was thinking maybe either a T1 line or two T1 lines bonded for EACH SITE rather than a 10MB OC3 for each site would be more realistic? Is a T1 really .15 MB? Or 1.5MB? I think the slowness that most people experience is due to the nature of the FDDI. Each site averages about 60 clients, but a couple have up to 150 clients. When using Citrix everything runs fine. The only apps they would run locally are Outlook and some telnet sessions (pure ANSI, little overhead). </FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>I apologize if this is too off topic, but I've always tried to contribute to this list whenever possible. One thing to keep in mind is that for each OC3 remote connection we were going to buy a 3Com Pathbuilder 330 (designed for fractional OC3). This is approximately $12,000 + the Pathbuilder 700 Ethernet blade for the the WAN switch at the main campus (another several thousand dollars). A Cisco 2500 or 2600 with bonded T1 is under $2000. </FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>PLEASE, if anyone has any insite, feedback, or comments, I'd really appreciate it. </FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>Regards,</FONT></DIV> <DIV><FONT face=Arial size=2>Mark</FONT></DIV> <DIV> </DIV></BODY></HTML>
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