Dell Force10 S4810P Reference Manual page 171

Usage
Field
Information
Source QID /Tx
Process
Destination QID/Rx
Process
Cur Len
High Mark
#of to / Timeout
#of Retr /Retries
#msg Sent/Msg
Sent/
#msg Ackd/Ack Rcvd Number of messages acknowledged
Retr /Available Retra
Total/ Max Retra
Important Points:
Example (C-
FTOS# show processes ipc flow-control cp
Series)
Q Statistics on CP Processor
TxProcess RxProcess
ACL0
ACL0
ACL0
ACL0
ACL0
CFG0
DHCP0
DHCP0
RTM0
ACL20
LACP0
ARPMGR0
ACL20
MACMGR0
TCLASSMGR0 ARPMGR0
Description
Source Service Identifier
Destination Service Identifier
Current number of messages enqueued
Highest number of packets in the queue at any point of time
Timeout count
Number of retransmissions
Number of messages sent
Number of retries left
Number of retries allowed
• 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 S-Series example, a retry (Retries) value of zero indicates that the SWP
mechanism reached the maximum number of retransmissions without an
acknowledgement.
RTM0
DIFFSERV0
IGMP0
PIM0
ACL20
CFGDATASYNC0 0
ACL0
IFMGR0
ARPMGR0
IGMP0
IFMGR0
MRTM0
PIM0
ACL0
Cur High Time Retr Msg
Len Mark Out ies
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 1 0 0
2 0 0
0 1 0 0
0 0 0 0
0 1 0 0
0 0 0 0
0 2 0 0
0 0 0 0
0 0 0 0
0 1 0 0
0 0 0 0
Ack Aval Max
Sent Rcvd Retra Retra
0 0 10 10
0 0 10 10
0 0 10 10
0 0 10 10
2 2 50 50
7 7 255 255
9 9 25 25
0 0 25 25
1 1 136 136
0 0 50 50
4 4 25 25
0 0 100 100
0 0 50 50
1 1 25 25
0 0 100 100
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