Fabric Manager Users Guide, Version 6.1, Revision A - QLogic

3–Fabric Manager Configuration
Configuring the QLogic Fabric Manager
Fat Tree Topology
When the RoutingAlgorithm is set to fattree, the FatTreeTopology section
is used to configure fat tree parameters. To properly handle routing decisions, the
SM needs to understand some fabric topology information. Specifically, how many
tiers are in the fat tree and which tier a switch belongs to. If all Channel Adapters
are on the same tier, the SM can easily determine the fat tree topology and tier a
given switch resides in. If they are not, an attempt will be made to find the core
switches based on the node description. This works well if the core switches are
QLogic IB 12000 series switches.
3
1
The parameters in Table 3-7 control Fat Tree Topology.
IB0054608-01 B 3-21