Hi chuck, I think they cisco mentioned it officially , yesterday I read some documents about the 3750 , and I found that you can take for example 3 port from the first switch and 4 ports from the second one and as much as you can take from the other stacked switch and bundle them in a way they will act as a single port, this is amaze I was thinking with myself that if I have 9 switches stackable then I can bundle 5 ports from each switch , 5 x 9 = 45 ports then the speed will be 45 Gig * 2 (full duplex) = 90 Gig , wow.
Here is what was written Cross-Stack EtherChannel Connections Because all the ports in a stack behave as one logical unit, EtherChannel technology can operate across multiple,physical devices in the stack. Cisco IOS Software can aggregate up to eight separate physical ports from any switches in the stack into one logical channel uplink. Up to 12 EtherChannel groups are supported on a stack. Refer to http://www.cisco.com/application/pdf/en/us/guest/products/ps5023/c1244/ccmig ration_09186a008017b238.pdf Ismail -----Original Message----- From: "Chuck Whose Road is Ever Shorter" [mailto:[EMAIL PROTECTED] Sent: Tuesday, July 29, 2003 2:52 PM To: [EMAIL PROTECTED] Subject: Re: Gigabit Copper Switch [7:73116] ""Larry Letterman"" wrote in message news:[EMAIL PROTECTED] > Ismail, > > The stackwise mentioned below is the way to interconnect 3750's by > using a large cable that connects the switches together. This > essentially extends the backplane of the switches and passes Data at > 16GB both ways... I think you may mean 16 gig each way for a total of 32. I think Cisco will soon be saying ( and accurately ) that a T1 is 3.08 megabits bandwidth -> ) ( was online in one of those webinars the other day. according to the slide show, that's the deal ) another interesting feature of the 3750 stackwide technology, indicated on one of the slides and stated verbally by one of the SE's, is that if you have several 3750's configured as a stack, you can create gig etherchannels by aggregating posts off of more than one switch. I.e take a gig port of each of 5 switches in the stack and create a single gig-e channel. I have not heard that officially from Cisco, and it seems too good to be true, but the slide in the presentation sure shows it, and one of the Cisco SE's on the call stated it was so. Larry, contact me off line, and I'll forward you the name and e-mail of the Cisco SE who gave the presentation. > > > Larry Letterman > Cisco Systems > > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Tuesday, July 29, 2003 8:15 AM > To: [EMAIL PROTECTED] > Subject: RE: Gigabit Copper Switch [7:73116] > > > Greeting, > > It's a great product, I have changed my plan to include the new > 3750-24TS-E in my campus design instead of the previous 3550-12T at > least I will get more ports , plus I will seize the extra ports to > connects the seven servers. > > The only thing which I am still confusing with, does stack wise mean > that if a two 3750-24TS-E stackable will provide 32 Gbps ? > > What I was planning to do is to connect two 3550 and bundle two ports > from each switch (Gig etherchannel) so it will support 4000 Mbps. > > Do still I have to configure Gig Etherchannel between the two > 3750-24TS-E switches? > > Ismail > > > -----Original Message----- > From: Larry Letterman [mailto:[EMAIL PROTECTED] > Sent: Monday, July 28, 2003 11:14 AM > To: [EMAIL PROTECTED] > Subject: RE: Gigabit Copper Switch [7:73116] > > > Look at a 3750-24..... > > > Larry Letterman > Cisco Systems > > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Monday, July 28, 2003 10:15 AM > To: [EMAIL PROTECTED] > Subject: Gigabit Copper Switch [7:73116] > > > Can someone recommend a good 8 to 24 port, 1000BASE-T layer 2 switch > for a server farm? I've found this 2970G-24T-E from Cisco, but it > doesn't seem to be widely sold. Not sure if that's because its new or > its old. > > > Though I would like to go with a Cisco product, it doesn't appear they > have anything. I'm contemplating getting a Foundry switch. Has > anyone integrated a Foundry switch into a totally Cisco powered > network before? Pros, Cons? > > Thanks!!!! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73241&t=73116 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
