Omni Switch/Router Distributed Switching Fabric
Page 1-3
Omni Switch/Router Distributed Switching Fabric
Many switches in the market employ a shared memory architecture, which uses a central
switching engine to send data to the appropriate port. As shown in the figure below, data
enters the input port (
➊
below), crosses the switching fabric on its way to the central switch-
ing engine(
➋
below), and
again
crosses the switching fabric (
➌
below) before exiting the
appropriate output port (
❹
below).
Traditional Shared Memory Architecture
In contrast, Omni Switch/Router switches use a distributed switching fabric. As shown in the
figure below, data enters the input port and crosses the switching fabric
only once
before
exiting the appropriate output port. Compared to the shared memory architecture, only half
as much bandwidth is required since data just crosses the switching fabric once.
Omni Switch/Router Distributed Switching Fabric
Switch Fabric
Central Switching Engine
I/O Port
I/O Port
Note: Unlike distributed switch
fabric, data is forced to cross
switch fabric twice.
➊
➋
➌
❹
Switch Fabric
I/O Port
I/O Port
Содержание Omni Switch/Router
Страница 1: ...Part No 060166 10 Rev C March 2005 Omni Switch Router User Manual Release 4 5 www alcatel com ...
Страница 4: ...page iv ...
Страница 110: ...WAN Modules Page 3 40 ...
Страница 156: ...UI Table Filtering Using Search and Filter Commands Page 4 46 ...
Страница 164: ...Using ZMODEM Page 5 8 ...
Страница 186: ...Displaying and Setting the Swap State Page 6 22 ...
Страница 202: ...Creating a New File System Page 7 16 ...
Страница 270: ...Displaying Secure Access Entries in the MPM Log Page 10 14 ...
Страница 430: ...OmniChannel Page 15 16 ...
Страница 496: ...Configuring Source Route to Transparent Bridging Page 17 48 ...
Страница 542: ...Dissimilar LAN Switching Capabilities Page 18 46 ...
Страница 646: ...Application Example DHCP Policies Page 20 30 ...
Страница 660: ...GMAP Page 21 14 ...
Страница 710: ...Viewing the Virtual Interface of Multicast VLANs Page 23 16 ...
Страница 722: ...Application Example 5 Page 24 12 ...
Страница 788: ...Viewing UDP Relay Statistics Page 26 24 ...
Страница 872: ...The WAN Port Software Menu Page 28 46 ...
Страница 960: ...Deleting a PPP Entity Page 30 22 ...
Страница 978: ...Displaying Link Status Page 31 18 ...
Страница 988: ...Displaying ISDN Configuration Entry Status Page 32 10 ...
Страница 1024: ...Backup Services Commands Page 34 14 ...
Страница 1062: ...Diagnostic Test Cable Schematics Page 36 24 ...
Страница 1072: ...Configuring a Switch with an MPX Page A 10 ...
Страница 1086: ...Page B 14 ...
Страница 1100: ...Page I 14 Index ...