Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

PDF

show processes ipc flow-control

Displays the single window protocol queue (SWPQ) statistics.

Syntax

show processes ipc flow-control [cp]

Parameters

cp	(OPTIONAL) Enter the keyword `cp` to view the control processor’s SWPQ statistics.

Defaults

none

Command Modes

EXEC
EXEC Privilege

Supported Modes

All Modes

Command History

Version	Description
9.9(0.0)	Introduced on the FN IOM.
9.4(0.0)	Supported on the FN I/O Aggregator.
8.3.17.0	Supported on the M I/O Aggregator.

Usage Information

Field	Description
Source QID /Tx Process	Source Service Identifier
Destination QID/Rx Process	Destination Service Identifier
Cur Len	Current number of messages enqueued
High Mark	Highest number of packets in the queue at any time
#of to / Timeout	Timeout count
#of Retr /Retries	Number of retransmissions
#msg Sent/Msg Sent/	Number of messages sent
#msg Ackd/Ack Rcvd	Number of messages acknowledged
Retr /Available Retra	Number of retries left
Total/ Max Retra	Number of retries allowed

Important Points:

The SWP provides flow control-based reliable communication between the sending and receiving software tasks.
A sending task enqueues messages into the SWP queue3 for a receiving task and waits for an acknowledgement.
If no response is received within a defined period of time, the SWP timeout mechanism resubmits the message at the head of the FIFO queue.
After retrying a defined number of times, the SWP-2-NOMORETIMEOUT timeout message is generated.
In the example, a retry (Retries) value of zero indicates that the SWP mechanism reached the maximum number of retransmissions without an acknowledgement.

Example

Dell#show processes ipc flow-control
                                             
                                             Q Statistics on CP Processor
                                             TxProcess RxProcess  Cur    High  Time  Retr Msg   Ack Aval  Max
                                             Len   Mark  Out   ies Sent  Rcvd Retra Retra ACL0  RTM0 
                                             0   0     0     0        0      0   10   10
                                             DIFFSERV0         0   0     0     0        0      0   10   10
                                             ACL0    IGMP0     0   0     0     0        0      0   10   10
                                             ACL0    PIM0      0   0     0     0        0      0   10   10
                                             LACP0   IFMGR0    0  24     0     0       34     34   25   25
                                             STP0    L2PM0     0   0     0     0        0      0   25   25
                                             L2PM0   STP0      0   1     0     0        2      2   25   25
                                             FRRP0   L2PM0     0   0     0     0        0      0   25   25
                                             DHCP0   ACL0      0   0     0     0        0      0   25   25
                                             DHCP0   IPMGR0    0   0     0     0        0      0   25   25
                                             DHCP0   IFMGR0    0   0     0     0        0      0   25   25
                                             SMUX0   IFMGR0    0  38     0     0       47     47   60   60
                                             SMUX0   LACP0     0   1     0     0        3      3   60   60
                                             --More--
                                             
                                             Dell#