HP T9576G06, Management Manual

Page: 664 / 778

Ethernet Subagent
SNMP Configuration and Management Manual — 424777-006
14 -28
dot3StatsTable Maintenance
dot3StatsTable Maintenance
For each subnet found in response to an INFO SPI command for the SUBNET * object
of the TCP/IP process, the Ethernet Subagent extracts associated logical interface
(LIF) names.
Using this information, the Ethernet Subagent uses the Shared Resource Library (SRL)
routine LM_Get_Attributes_() to get the corresponding physical interface (PIF) name
and the LIF type.
Using the SRL routine LM_Get_Status_(), the Ethernet Subagent gets the status of the
LIF.
•
If the LIF type is Ethernet and the access status is UP, the subagent gets PIF
statistics by issuing the SRL routine LM_Get_Statistics_() on the corresponding
PIF. The subagent then maps the obtained statistics to the Ethernet MIB tabular
objects.
•
If the LIF type is Ethernet and the status is STOPPED, zeros are assigned to all
the Ethernet MIB tabular objects.
When the refresh timer times out, the subagent updates the dot3StatsTable. If a
SUBNET is deleted or added, the subagent removes or adds the corresponding table
entry during the next MIB refresh.
The subagent assigns a number for each SUBNET defined in TCP/IP. That number
represents both the index for the dot3StatsTable and the tabular object instance
identifier. This number is assigned once at startup time and never changes while the
subagent executes, unless an addition or deletion of interfaces occurs.