Hi all,
Any body knows what they mean by saying "wire-speed"
forwarding about a switch?
Also, when Cisco says a switch can forward at 100
million pps or something like this, what the size of
the packets they usually refer to of the PPS(packet
per second)? 64byte?
Thanks
Kent
wire-speed meaning it's processed almost as fast as it comes through the
wire unlike when bridging is done via software.
"Kent" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi all,
>
> Any body knows what they mean by saying "wire-speed"
> forwarding about a
Yes the numbers are based upon 64 byte packets. All vendors do this for the
numbers game. You gotta love marketing.
"Kenneth Lorenzo" <[EMAIL PROTECTED]> wrote in message
8ph51t$413$[EMAIL PROTECTED]">news:8ph51t$413$[EMAIL PROTECTED]...
> wire-speed meaning it's processed almost as fast as i
Wire speed means the switch can pump out packets as fast as the medium can
handle. For example, the maximum packets-per-second rate on 10-Mbps
Ethernet with 64-byte packets is 14,880 packets per second. This comes from
Preamble = 64 bits
64 Byte frame = 512 bits
Interframe gap =
64 byte packets and at the max rated pps per port -
14,000 pps something for 10 Mbps Ethernet. However,
vendors get cute with the calculation - for example,
some, use ingress only while others use ingress and
egress - effectively double counting. Others use
cumulative ports with oversubscription,
What do you mean by interfame gap? is it the address?
What about ingress and egress issue? how do they calculate it?
Thanks a lot
Bye
On Sun, 10 Sep 2000 19:41:13 -0700, Priscilla Oppenheimer wrote:
> Wire speed means the switch can pump out packets as fast as the medium
can
> handle.
Thanks guys!
Kent
--- Priscilla Oppenheimer <[EMAIL PROTECTED]> wrote:
> Wire speed means the switch can pump out packets as
> fast as the medium can
> handle. For example, the maximum packets-per-second
> rate on 10-Mbps
> Ethernet with 64-byte packets is 14,880 packets per
> second. This c
At 03:17 AM 9/11/00, you wrote:
>What do you mean by interfame gap? is it the address?
The interframe gap (IFG) is the required gap between frames. Per the IEEE
802.3 (Ethernet) specification, between frames, there must be silence on
the wire for the time to transmit 96 bits, which is 9.6 micr
> Date: Sun, 10 Sep 2000 19:41:13 -0700
> From: Priscilla Oppenheimer <[EMAIL PROTECTED]>
> Subject: Re: what is wire-speed?
>
> Wire speed means the switch can pump out packets as fast as
the medium can handle. For example, the maximum packets-per-
second rate on 10-Mbps
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