ServerNet Cluster Manual

ServerNet Cluster Manual—520575-003
G-1
G Fiber-Optic Cable Information
This appendix provides additional information about the fiber-optic cables that connect
a cluster switch to either a node or another cluster switch. These fiber-optic cables
conform to the IEEE 802.3z (Gigabit Ethernet) specification.
For this release of the ServerNet Cluster product, the following HP cables are
supported:
HP does not supply fiber-optic cables longer than 80 meters. However, longer cables
are supported for connections in a multilane link if certain requirements are met. For
more information, see Table 2-4, Cable Length Requirements for Multilane Links, on
page 2-11.
Fiber-Optic Cabling Model
Figure G-1 shows the basic model for the fiber-optic cable between a cluster switch
and either another cluster switch or a node. The entire path between the two Medium
Dependent Interfaces (MDIs) is referred to as the channel. The intermediate fiber-optic
connectors might be part of a patch panel or might be splices to a broken cable, or
they might not exist if a single run of cable is used between the two MDIs.
Cable Length
Feet Meters
32.8 10
131.2 40
262.4 80
262.4 80 (plenum-rated)
Note. Although IEEE 802.3z has a mechanism for supporting multimode fiber-optic cables,
the ServerNet cluster product does not currently support them.
Figure G-1. Fiber-Optic Cable Model
Cluster
Switch
Fiber
Optic
Connector
Fiber
Optic
Connector
Cluster
Switch
or
Node
Patch
Cable
Building
Cable
Fiber Optic Cabling
(channel)
Patch
Cable
MDI MDI
VST081.vsd