White Papers

Table Of Contents
Command Description
show fc
topology
Displays the topology information of the local switch.
The following configurations are applicable only after configuring the switch mode to fabric services using the fc switch-
mode fabric-services command. When you set Switch mode to Fabric Services, the Fibre Channel interfaces are set
to shutdown and the fcoe-map default_full_fabric applies. Any previously configured fcoe-map is removed and you
cannot remove the fcoe-map default_full_fabric from the Fibre Channel interfaces.
Link State Database
The collection of neighbor, connected ports, and cost of all the switches in a Fabric constitutes the link-state database (LSDB).
Record
Headings
Description
SwitchName WWN of a switch on the fabric.
PortOut Port number on the local switch that would be used to route a frame to the named switch.
Hops The number of links between the local switch and the named switch.
Cost The overall link cost (in time) between the local switch and the named switch. Cost is a function of hops
and link speed.
Age Seconds that this route to the switch has existed.
LinkCount Number of ISL records in links array. This value is the number of switches attached to the named switch.
To view the LSDB information on the S5000 switch, use the show fc lsdb command.
Inter Switch Link (ISL)
For each switch LSDB record in the fabric, there is a list of ISLs detailing the links between that switch and any switches
directly attached to it.
Heading
Description
NeighborID Domain ID of connected switch.
LocalPort Port number on switch that is connected to its neighbor.
RemotePort Port number on neighbor switch.
Link Cost Link Cost
Principal Switch Selection and Domain ID Assignment
To view the information on all switches in the fabric, use the show fc fabric command.
Route Table
To view the established routes between server and target ports, use the show fc route command.
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Fabric Services