Linkcost - HP StorageWorks MSA 2/8 - SAN Switch Reference Manual

Fabric OS Commands

linkCost

Set or print the FSPF cost of a link.
Synopsis: V3.1.x
linkCost [portnumber][, cost]
Synopsis: V4.1.x
linkCost [slotnumber/][portnumber][, cost]
Availability
Admin
Release
V3.1.x and V4.1.x
Description
Use this command to set or display the cost of an Inter-Switch Link (ISL). The
cost of a link is a dimensionless positive number. It is used by the FSPF path
selection protocol to determine the path that a frame takes going from the source
to the destination switch. The chosen path is the path with minimum cost. The cost
of a path is the sum of the costs of all the ISLs traversed by the path. The cost of a
path is also known as the "metric."
FSPF supports load sharing over a number of equal cost paths.
Every ISL has a default cost that is inversely proportional to the bandwidth of the
ISL. For a 1Gb per second ISL, the default cost is 1000. For a 2Gb per second
ISL, the default cost is 500.
All currently active ISLs have an additional suffix of E_PORT attached to their
interface numbers. If the link has a static cost assigned to it, then the link cost for
that link has a suffix of STATIC attached to its link cost.
This command changes the actual link cost only; it does not affect the default cost.
The interfaceShow command displays both the default and the actual cost.
406 Fabric OS Version 3.1.x/4.1.x Reference Guide