RE: Cascading Switches
Hub-n-spoke is not always practical from a budget perspective. I think of cascading and stacking as basically the same thing in terms of physical topology. Creating a switch cluster (stack as you call it) simply provides a single management interface for the entire cluster. A cluster does not need to be a physical stack of switches, however, as they can be spread out across the LAN. Now, when it comes to the maximum number of switches that you can stack, that depends on the technology involved. There are distinct limitations to each. With Cisco's GigaStack GBICs, you can stack up to 9 switches in half-duplex mode. You could also simply use crossover cables between the 10/100 ports, but the stack size limitation is probably different when doing this. In comparison, 3Com's matrix module only supports a stack of 4 switches within the shared backplane. As Gareth suggested, hub-n-spoke is a better way to go, but you should dedicate a switch just for the hub function and then uplink all of the other switches to it. This way, you prevent frames from crossing the entire backbone and going through every switch, which could happen in a stacked configuration. A little more expensive, but better in the long run. Rik -Original Message- From: Gareth Hinton [mailto:[EMAIL PROTECTED]] Sent: Wednesday, January 24, 2001 6:48 PM To: [EMAIL PROTECTED] Subject: Re: Cascading Switches Why cascade them rather than using hub/spoke connectivity? Gareth ""Maness, Drew"" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I've looked through the archives as well as on CCO but could not find a definite answer to the limit of "cascading" switches, specifically catalyst 2900's. I saw the discussion earlier this year/last year that talked about the difference between "cascading" and "stacking". I'm not looking for shared management (stacking) but just how many switches can I cascade together to get the highest port concentration. Just a simple (or bad network design)of one switch to another to another to N... because I ran out of ports and do not want to by a real switch scenario How many can I connect? My first reaction to this question was that it had to be limited by the CAM of each switch but can't find an answer. Again it is for the 2900 series switch. Thanks Drew _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] , This mail was processed by Mail essentials for Exchange/SMTP, the email security management gateway. Mail essentials adds content checking, email encryption, anti spam, anti virus, attachment compression, personalised auto responders, archiving and more to your Microsoft Exchange Server or SMTP mail server. For more information visit http://www.mailessentials.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cascading Switches
Why cascade them rather than using hub/spoke connectivity? Gareth ""Maness, Drew"" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I've looked through the archives as well as on CCO but could not find a definite answer to the limit of "cascading" switches, specifically catalyst 2900's. I saw the discussion earlier this year/last year that talked about the difference between "cascading" and "stacking". I'm not looking for shared management (stacking) but just how many switches can I cascade together to get the highest port concentration. Just a simple (or bad network design)of one switch to another to another to N... because I ran out of ports and do not want to by a real switch scenario How many can I connect? My first reaction to this question was that it had to be limited by the CAM of each switch but can't find an answer. Again it is for the 2900 series switch. Thanks Drew _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Cascading Switches
I've looked through the archives as well as on CCO but could not find a definite answer to the limit of "cascading" switches, specifically catalyst 2900's. I saw the discussion earlier this year/last year that talked about the difference between "cascading" and "stacking". I'm not looking for shared management (stacking) but just how many switches can I cascade together to get the highest port concentration. Just a simple (or bad network design)of one switch to another to another to N... because I ran out of ports and do not want to by a real switch scenario How many can I connect? My first reaction to this question was that it had to be limited by the CAM of each switch but can't find an answer. Again it is for the 2900 series switch. Thanks Drew _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cascading Switches
I've never done it with 2900s, but the product docs seem to talk about it: http://www.cisco.com/univercd/cc/td/doc/pcat/ca2900.htm -- Jason Roysdon, CCNP+Security/CCDP, MCSE, CNA, Network+, A+ List email: [EMAIL PROTECTED] Homepage: http://jason.artoo.net/ Cisco resources: http://r2cisco.artoo.net/ ""Maness, Drew"" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I've looked through the archives as well as on CCO but could not find a definite answer to the limit of "cascading" switches, specifically catalyst 2900's. I saw the discussion earlier this year/last year that talked about the difference between "cascading" and "stacking". I'm not looking for shared management (stacking) but just how many switches can I cascade together to get the highest port concentration. Just a simple (or bad network design)of one switch to another to another to N... because I ran out of ports and do not want to by a real switch scenario How many can I connect? My first reaction to this question was that it had to be limited by the CAM of each switch but can't find an answer. Again it is for the 2900 series switch. Thanks Drew _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cascading Switches
Hi, I can't find my figures but off memory you can have 5 bridges between 2 devices therefore you could have up to 5 switches between two clients or client - server. This would probably suggest the to go more than 3 deep in your cascading could present a problem but could the links cope. Running 15 or so switches into another with a couple of servers into it would be ok. But running 15 or 20 into one switch then onto another 15 or 20 I guess you would end up with a huge bottle neck if not between switches then most likely at a server. 20 X 20 is alreay 400 connections, whew!. Just some thoughts. Teunis Hobart, Tasmania Austalia On Monday, January 22, 2001 at 04:49:30 PM, Maness. Drew wrote: I've looked through the archives as well as on CCO but could not find a definite answer to the limit of "cascading" switches, specifically catalyst 2900's. I saw the discussion earlier this year/last year that talked about the difference between "cascading" and "stacking". I'm not looking for shared management (stacking) but just how many switches can I cascade together to get the highest port concentration. Just a simple (or bad network design)of one switch to another to another to N... because I ran out of ports and do not want to by a real switch scenario How many can I connect? My first reaction to this question was that it had to be limited by the CAM of each switch but can't find an answer. Again it is for the 2900 series switch. Thanks Drew _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] -- www.tasmail.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cascading Switches
Depends on the limitation of the diameter of the spanning tree ? Thanks Vincent ""Maness, Drew"" [EMAIL PROTECTED] ¼¶¼g©ó¶l¥ó [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I've looked through the archives as well as on CCO but could not find a definite answer to the limit of "cascading" switches, specifically catalyst 2900's. I saw the discussion earlier this year/last year that talked about the difference between "cascading" and "stacking". I'm not looking for shared management (stacking) but just how many switches can I cascade together to get the highest port concentration. Just a simple (or bad network design)of one switch to another to another to N... because I ran out of ports and do not want to by a real switch scenario How many can I connect? My first reaction to this question was that it had to be limited by the CAM of each switch but can't find an answer. Again it is for the 2900 series switch. Thanks Drew _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
