User`s manual
Table Of Contents
- Preface
- General Description
- Installation
- Introduction
- Unpack
- Place or Mount the Equipment
- Apply the IEC Class 1 Laser Information Label (If the installation is in Europe)
- Install GBICs
- Connect to AC Power
- Switch Logic Power Good LED
- Check the Power-On-Self-Test (POST) Results
- Cable Fibre Channel Devices to the Switch
- Configure the Chassis
- Configure the Ports
- Zoning
- Rack and Shelf Administration
- Operating the Switch
- Diagnostics/Troubleshooting
- Removal/Replacement Procedures
- Multi-Chassis Fabrics
- Reference Information
- QLogic Customer Support
- Index

Preliminary
Introduction
SANbox-16STD Fibre Channel Switch
Installer’s/User’s Manual 59012-03 Rev. A Multi-Chassis Fabrics 5-3
Bandwidth Between Chassis
Each T_Port link between directly connected chassis contributes 100 megabytes of
bandwidth between those chassis. Devoting half of the chassis ports to T_Ports
may provide as much bandwidth between directly connected chassis as there is to
user ports on the chassis (no bottleneck between chassis). One T_Port interconnec-
tion between chassis is the minimum.
Fabric topology also affects bandwidth between chassis. In Mesh and Cascade
topologies, T_Ports are either distributed between adjacent chassis (Cascade
topology) or distributed among all chassis (Mesh Topology). Thus, in these topolo-
gies, the bandwidth is also distributed (divided among chassis).
In Multistage topology, all bandwidth is fully maintained between IO/T chassis. It
is therefore possible, in Multistage topology, to provide as much as 400 MBytes
per second bandwidth between any two 8-port IO/T chassis.
Cable Length
The maximum cable length between chassis depends on the type of interconnect
media (GBICs).
In Order Delivery
SANbox Switch chassis guarantee in order delivery with any number of T_Port
links between chassis.
NOTE:
In order to set up a multi-chassis fabric you are required to select a topology, cable
the chassis together, and configure each chassis.
Configuration consists of assigning a stage type to a chassis which tells it which
function it is to perform (IO/T or CC). In the case of a Cascade or Mesh topology,
all chassis are the default stage type (IO/T). A Multistage switch consists of IO/T
and CC chassis. For addressing purposes, you must also assign a Chassis Number
to each chassis.
Refer to “Cascade Topology” on page 5-5, “Mesh Topology” on page 5-8, and
“Multistage Topology” on page 5-11 for information about choosing a fabric
topology. After choosing the fabric topology, refer to “Cabling” on page 5-16 and
“Chassis Configuration” on page 5-17 for the remaining instructions.