Noooooooo.
nononononono.
CSMA/CD only gets used when you are not in full duplex. (/me ducks) ( i
have NEVER seen a full-dup. hub) meaning that if i am using a switch capable
of full duplex (as most are) ..conversations, every station can transmit as
much as they want. this is what differentiates between a hub and a switch.
(but not the only thing)
you are correct in that a 100 meg HUB with a gig uplink could never fully
utilize the link, but the case is completly different with a switch.
----- Original Message -----
From: "Vijay Ramcharan"
To:
Sent: Wednesday, May 30, 2001 9:54 AM
Subject: RE: elementary? [7:6359]
> Thanks everyone for their replies. As I now understand it, the 1Gb
> uplink just moves data faster than... say, a 100Mb uplink. Correct?
> Conversations between hosts on each switch still take place one at a
> time, thereby obeying Ethernet rules of one station transmitting at a
> time. Correct?
> Okay my next question. Is there any point at which this 1Gb uplink can
> become saturated, since it's only handling station to station sessions-
> one at a time.
> If a number of stations on each switch were doing large file transfers
> to each other via the uplink, would there be some point at which the
> uplink would be maxed out- in terms of bandwidth? Or is the only
> limiting factor, the workstations inability to pump data out fast enough
> to max out the uplink when they're only running 100Mb?
>
> I'm thinking that it's really not possible to max out a 1Gb uplink when
> stations are only running 100Mb. If this is correct then I lay this
> question to rest.
>
> Thanks.
>
> Vijay Ramcharan
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
> Vijay Ramcharan
> Sent: Wednesday, May 30, 2001 12:06 AM
> To: [EMAIL PROTECTED]
> Subject: elementary? [7:6359]
>
>
> Forgive me if this sounds a little bit basic but this is what happens
> when you rush into things without understanding the fundamentals.
> Suppose a 24 port 100Mbit switch called A is uplinked to another 24 port
> 100Mb switch called B via a 1Gb connnection. Suppose hosts D through N
> are on switch A and hosts M through X are on Switch B. Would
> conversations between the hosts from Switch A to Switch B occur one at a
> time or are multiple conversations multiplexed over the 1Gb uplink?
>
> I'm just trying to find out if and how that 1Gb uplink is used up.
> Thanks in advance. I'd put TIA but I hate those little acronyms. No
> flames please.
>
> Vijay Ramcharan
> 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]
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=6437&t=6359
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
