CNM Formats Supported by the 3708
The 3708 supports the current REQMS/RECFMS and NMVT formats. The
following list describes these formats:
REQMS/RECFMS Type 01 Secondary SDLC Test Counters
• For 3708 end of upstream link
• Not applicable for downstream ports
• Counters always solicited
• Counters at maximum values until sent and reset by a REQMS solicitation.
REQMS/RECFMS Type 02 Error Summary Data
• Counters for total port, internal product, and SNA negative response errors
• Support for 3708 end of upstream link
• Not applicable for downstream ports
• Does not distinguish request/response PIUs
• Cannot provide full account of secondary end
• Counters always solicited
• Counters at maximum value until reset by a REQMS solicitation.
REQMSIRECFMS Type 03 Port Error Counters
NMVT 8080 Alert
NMVT 0080 Alert
• Support for upstream port
• Support for counter set 2 for link adapter errors
• Not applicable for downstream ports
• Counters refer to secondary end of link
• Counters always solicited
• Counters at maximum value until reset by a REQMS solicitation.
• Response Time Monitor (RTM) Request/Control Vector
• Data collected for every LU or a specific LU on a 3708 port
• Data collected for all LUs whose counters are nonzero
• A session correlation vector returned to the host that allows the host to
determine session paring after the unbind of the session
• For LU-LU session termination, unsolicited RTM data transmitted only if the
host had originally transmitted a CNMI command to test whether the 3708
supported RTM data.
• Response Time Monitor (RTM) Data Reply Major Vector
• Solicited Data Collection
If the host requests RTM data for an LU whose RTM data is zero, the 3708
responds with all RTM information for that LU.
When the host requests RTM data for all nonzero LUs, the 3708 responds
for only the LUs with nonzero data. The last LU is sent regardless of its
state.
The 3708 rejects all other RUs while responding to an NMVT request RU.
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IBM 3708 Description