User`s manual

Preliminary
Cabling
SANbox-16STD Fibre Channel Switch
5-16 Multi-Chassis Fabrics 59012-03 Rev. A Installer’s/User’s Manual
available T_Port access among its user ports. In this case there is a T_Port for each
user port. If a T_Port or CC chassis fails, the chassis re-assigns the user port from
the failed path to another T_Port/CC that is good.
Note that any IO/T chassis can communicate with any other IO/T chassis with just
three chassis hops (counting the source and destination chassis).
There are eight user ports remaining on each IO/T chassis. All user ports may be F,
FL, SL, or TL_Ports.
Cabling
Any port on an IO/T chassis may be a T_Port. If you are using 2, 3, or 4 T_Ports on
each chassis, it is best to distribute these T_Ports as evenly as possible between the
ASIC port groups on each IO/T chassis. That is, don’t bunch the T_Ports up in one
ASIC port group. See “Tuning” on page 2-10 for more information about ASIC
port groups. Using a port as a T_Port does not affect any other port on the chassis.
Fiber Optic T_Port Connections
If you have individual connectors (one for each fiber), connect the transmit side of
the T_Port on one chassis to the receive side of the T_Port on the other chassis.
Connect the receive side of the T_Port on one chassis to the transmit side of the
T_Port on the other chassis. On the top row of ports on a chassis, the transmit
connector is the right-hand connector of each pair. On the bottom row of ports on a
chassis, the transmit connector is the left-hand connector of each pair. Refer to
Section 1 General Description for a drawing showing the transmit and receive
connectors in a port serviced by a fiber optic GBIC.
Keys on “Duplex” cable assemblies (a connector-pair containing both transmit and
receive together in one unit), prevent you from connecting them incorrectly.
Copper T_Port Connections
HSSDC and DB-9 connectors are duplex cable assemblies. That is, both the
transmit and receive contacts are part of the same keyed plug assembly. You can’t
plug them in wrong.
T_Port Cable Length
The maximum cable length between chassis depends on the type of interconnec-
tion media and its associated GBICs. Refer to the Appendix A Reference Informa-
tion for the various types of interconnection media and GBICs.
Device Connections
Cable the user ports to their respective node devices. User ports are all those ports
on an IO/T chassis that are not used as T_Ports. User ports may be F, FL, SL, or
TL_Ports. Try to localize the traffic to each chassis as much as possible to
minimize the amount of traffic across the T_Port links between chassis.