Service Manual

Version Description
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.11.1 Introduced on the Z9000.
8.1.1.0 Introduced on the E-Series ExaScale.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series and E-Series.
Usage Information
Field Description
Source QID /Tx
Process
Source Service Identier
Destination QID/Rx
Process
Destination Service Identier
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 ow 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 dened period of time, the SWP timeout mechanism resubmits the
message at the head of the FIFO queue.
• After retrying a dened 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.
Example (S-Series)
Dell#show processes ipc flow-control ?
cp Control Processor
| Pipe through a command
120
Control and Monitoring