Fabric OS Reference Manual (Version 3.0)

1-100 Fabric OS Reference
Telnet Commands
1
interfaceShow
Display FSPF interface information.
Synopsis interfaceShow [port]
Availability All users
Description Use this command to display data structures associated with FSPF interfaces (E_Ports) on the
switch.
There are two data structures that save data associated with FSPF interfaces:
• the permanently allocated Interface Descriptor Block (IDB)
• the neighbor data structure. This data structure is allocated when a switch port becomes an
E_Port. The neighbor data structure contains all the information relating to the switch that is
connected to an adjacent switch.
This command displays the content of both data structures, if they have been allocated.
Use this command without specifying a port number to display the interface information for all
ports on the switch (including non E_Ports).
The following fields are displayed:
idbP Pointer to IDB.
nghbP Pointer to neighbor data structure.
ifNo Interface number.
cost Cost of sending a frame over the ISL connected to this interface. A value of 1000
indicates a 1 Gb/s link. A value of 500 indicates a 2 Gb/s link.
delay Conventional delay incurred by a frame transmitted on this ISL. A fixed value
required by the FSPF protocol.
lastScn Type of the last State Change Notification received on this interface.
lastScnTime Time the last State Change Notification was received on this interface.
upCount Number of times this interface came up, with respect to FSPF.
lastUpTime Last time this interface came up.
downCount Number of times this interface went down.
lastDownTime
Last time this interface went down.
downReason Type of last State Change Notification that caused this interface to go down.
iState Current state of this interface. The state can be UP or DOWN. An interface in
DOWN state does not have an allocated neighbor data structure and cannot be
used to route traffic to other switches.
state Current state of this interface. This E_Port is used to route traffic to other
switches only if the state is 'NB_ST_FULL'.
nghbCap Neighbor capabilities. Should be 0.
nghbId Domain ID of the neighbor (adjacent) switch.