One other issue you may want to look at is the anti-virus client on the workstation. Many of them are MAPI aware so when the client get the new mail notification it goes and checks the new mail for an attachment and if one exists it may download the attachment and scans it for a virus. Where you can really get banged is when someone sends a larger attachment to those 20 users in one location and all the clients are trying to bring the attachment local to scan at the same time. I've seen bandwidth utilization spike hard and the clients "lock up" while this is being done.
-----Original Message----- From: Ambrose, Joseph [mailto:[EMAIL PROTECTED]] Sent: Friday, May 31, 2002 11:48 AM To: MS-Exchange Admin Issues Subject: RE: How much Bandwidth? Thanks to all who put their $0.02 in! Joseph Ambrose System and Network Manager The Conference Board P: 001-212-339-0443 F: 001-212-836-3802 E: [EMAIL PROTECTED] Visit our Award Winning Web Site: www.conference-board.org -----Original Message----- From: Ambrose, Joseph [mailto:[EMAIL PROTECTED]] Sent: Friday, May 31, 2002 11:43 AM To: MS-Exchange Admin Issues Subject: RE: How much Bandwidth? No problem Missy, I got what I needed. Thanks!!!!! Joseph Ambrose System and Network Manager The Conference Board P: 001-212-339-0443 F: 001-212-836-3802 E: [EMAIL PROTECTED] Visit our Award Winning Web Site: www.conference-board.org -----Original Message----- From: Missy Koslosky [mailto:[EMAIL PROTECTED]] Sent: Friday, May 31, 2002 11:24 AM To: MS-Exchange Admin Issues Subject: Re: How much Bandwidth? Much better explanation... You probably won't. How much of that bandwidth is available? As a rule of thumb, you need between 3 and 5 MB available per user. For 20 users, you should be just fine. Sorry... ----- Original Message ----- From: "Ambrose, Joseph" <[EMAIL PROTECTED]> To: "MS-Exchange Admin Issues" <[EMAIL PROTECTED]> Sent: Friday, May 31, 2002 11:18 AM Subject: RE: How much Bandwidth? Simply put.... We have an office in Brussels that has a network connected to us by a VPN. Their Exchange server is on our site. All mail flows fine between them. ( IMC is on this side of the pond) this configuration is FINE THE WAY IT IS. My boss wants to move all their servers over here. They have a 512K link. We have a T1. I told him that 20 people connecting to Exchange over a VPN would not work well with the bandwidth they have. I'm trying to find the information to support that statement. Joseph Ambrose System and Network Manager The Conference Board P: 001-212-339-0443 F: 001-212-836-3802 E: [EMAIL PROTECTED] Visit our Award Winning Web Site: www.conference-board.org -----Original Message----- From: Kevin Miller [mailto:[EMAIL PROTECTED]] Sent: Friday, May 31, 2002 11:00 AM To: MS-Exchange Admin Issues Subject: RE: How much Bandwidth? As much as it can. The packets are 32k. Let me ask you, why do you need this information? --Kevinm KMAP-SR, M, WLKMMAS, UCC+WCA, And Beyond http://www.daughtry.ca/ For Graphics and WebDesign, GO here! -----Original Message----- From: Ambrose, Joseph [mailto:[EMAIL PROTECTED]] Sent: Friday, May 31, 2002 6:44 AM To: MS-Exchange Admin Issues Subject: How much Bandwidth? Hello Exchange Experts! Can you tell me how much bandwidth the Outlook <-> Exchange RPC connections uses? Exch 5.5 sp4 Outlook 97 sr-2 / Outlook 2000 Joseph Ambrose System and Network Manager The Conference Board P: 001-212-339-0443 F: 001-212-836-3802 E: [EMAIL PROTECTED] Visit our Award Winning Web Site: www.conference-board.org List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm