Geoffrey
- Original Message -
From: "Luan Kim" [EMAIL PROTECTED]
To: "Sim, CT (Chee Tong)" [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, July 03, 2000 12:48 PM
Subject: RE: how to configure VLAN on 2900 switch-how about full duplex an d
spanning tre
!
Geoffrey.
- Original Message -
From: "Luan Kim" [EMAIL PROTECTED]
To: "A. Geoffrey Cauchi" [EMAIL PROTECTED]
Cc: "Sim, CT (Chee Tong)" [EMAIL PROTECTED];
[EMAIL PROTECTED]
Sent: Monday, July 03, 2000 1:33 PM
Subject: Re: how to configure VLAN on 2900 swi
Message -
From: A. Geoffrey Cauchi [EMAIL PROTECTED]
To: Luan Kim [EMAIL PROTECTED]; Sim, CT (Chee Tong)
[EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, July 03, 2000 4:51 PM
Subject: Re: how to configure VLAN on 2900 switch-how about full duplex an d
spanning tree
Hi
First you have
PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, July 03, 2000 4:51 PM
Subject: Re: how to configure VLAN on 2900
switch-how about full duplex an d
spanning tree
Hi
First you have to define VLAN 2.
In the enable mode, (not the config mode!), type
the following
Vlan database
Vlan
At 07:38 PM 7/3/00 +0530, you wrote:
then what is the advantage of vlan? if we need a router between vlans.
Gm
vlans's are good for segmenting broadcast traffic (creating more broadcast
domains), security (not
forwarding sensitive traffic to unauthorized hosts), and for ease of
Tong)
[EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, July 03, 2000 5:57 PM
Subject: Re: how to configure VLAN on 2900
switch-how about full duplex an d
spanning tree
I don't know a whole lot about VLANs, but
everything
so far has said that you need a router to
communicate
Cisco's website documentation says that full duplex operation is available
on all ethernet and fastethernet ports. However, I have several 1900s and I
cannot see how to turn on full duplex operation on ethernet ports. The
fastethernet ports have an option under Port Configuration
2000 10:22
To: [EMAIL PROTECTED]
Subject: Re: CSMA/CD : full duplex
Further to my original post...
It is possible to get collisions on a Full Duplex segment. Transmission
from the switch towards the destination is a shared bandwidth domain (with
other originating hosts transmitting
Further to my original post...
It is possible to get collisions on a Full Duplex segment. Transmission
from the switch towards the destination is a shared bandwidth domain (with
other originating hosts transmitting towards the same destination). As such
collisions may occur on the transmit
When Cisco says "Full Duplex", they typically refer
to the MAC layer function of transmitting and
receiving at the same time.
This is accomplished on ethernet by uncoupling the
Collision Detection circuit, and buffering TX and RX
in separate queues.
There is no internal 'CSMA/CD
for
collisions that require CSMA/CD arbitration.
Full duplex increases throughput as less traffic is forwarded to end devices
(cuts out unicasts not addressed to the attached devices) but does not
guarantee collisionless connectivity. CSMA/CD is required to handle the
collisions that do occur
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