>Hi
>
>Is shared memory on the 3500XL switches
>
>(*snip from cisco.com)
>Shared-Data Buffer
>A key attribute of the Catalyst 3500 XL architecture is its shared-data
>buffer, which employs 4-MB of DRAM in its initial deployment. The
>shared-buffer architecture optimizes buffer utilization through dynamic
>allocation across all ports and by avoiding packet duplication for
>multicast or broadcast traffic.
>(*end of snip)
>
>same as a backplane on 6000 series switches? (eg 32gb)
>
>are they the same idea, but on different scales?
>
>thanks
>Deepak
>
In most engineering discussions, the internal mechanisms that a
switch uses to interconnect its input and output ports is called a
fabric.
"Backplane" doesn't really say anything about the internal
organization of that fabric. It primarily refers to the way in which
cards mechanically plug into slots. Indeed, "midplanes," where cards
plug into a central (often passive) interconnect in the center of the
chassis, with "front cards" and "back cards," is increasingly common
in high-end devices. In Cisco, I first saw midplanes in the former
Stratacom devices.
The three major fabric models are shared bus, shared memory, and crossbar.
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
