Brocade Communications Systems Fabric OS v7.0.1, Справочник по командам

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Fabric OS Command Reference 597
53-1001764-01
portBufferShow
2
portBufferShow
Displays the buffer usage information for a port group or for all port groups in the switch.
SYNOPSIS
portbuffershow [[ slot /] port]
DESCRIPTION
Use this command to display the current long distance buffer information for the ports in a port group.
The port group can be specified by giving any port number in that group. If no port is specified, then the
long distance buffer information for all of the port groups of the switch is displayed.
The following long distance information is displayed:
User Port
Index number of the port.
Port Type
E (E_Port), F (F_Port), G (G_Port), L (L_Port), or U (U_Port).
Lx Mode
Long distance mode.
L0
Link is not in long distance mode.
LE
Link is up to 10 km.
LD
Distance is determined dynamically.
LS
Distance is determined statically by user input.
Max/Resv Buffers
The maximum or reserved number of buffers that are allocated to the port based
on the estimated distance (as defined by the
desired_distance operand of the
portCfgLongDistance command). If the port is not configured in long distance
mode, certain systems might reserve buffers for the port. This field then displays
the number of buffers reserved for the port.
Buffer Usage
The actual number of buffers allocated to the port. In LD mode, the number is
determined by the actual distance and the user-specified desired distance (as
defined by the
desired_distance operand of the portCfgLongDistance
command).
Needed Buffers
The number of buffers needed to utilize the port at full bandwidth (depending on
the port configuration). If the number of
Buffer Usage is less than the number of
Needed Buffers , the port is operating in the buffer limited mode.
Link Distance
For L0 (not in long distance mode), the command displays the fixed distance
based on port speed, for instance: 10 km (1 Gbps), 5 km (2 Gbps), 2 km (4 Gbps),
or 1 km (8 Gbps). For static long distance mode (LE), the fixed distance of 10 km
displays. For LD mode, the distance in kilometers displays as measured by timing
the return trip of a MARK primitive that is sent and then echoed back to the switch.
LD mode supports distances up to 500 km. Distance measurement on a link
longer than 500 km might not be accurate. If the connecting port does not support
LD mode, is shows "N/A".