FW 05.01.00 and SW 07.01.00 HP StorageWorks SNMP Reference for Directors and Edge Switches Reference Guide (AA-RQ7BD-TE, June 2003)

SNMP Support
112 SNMP Reference for Directors and Edge Switches
Link Table
The link table is intended to organize and communicate any information the agent
which would assist a management application to discover the connectivity units in
the framework and the topology of their interconnect. That is, the goal is to assist
the management application not only to list the elements of the framework, but to
map them.
With this goal, the agent should include as much as it possesses about any links
from its own connectivity units to others, including links among its own units.
An agent should include partial information about links if it is not able to fully
define them. For an entry to be considered to be valid, both the X (local) and the Y
(remote) need to have one valid value.
If the agent is able to discover links which do not directly attach to members of its
agency and its discovery algorithm gives some assurance the links are recently
valid, it may include these links.
Link information entered by administrative action MAY be included even if not
validated directly if the link has at least one endpoint in this agency, but should not
be included otherwise.
A connectivity unit can fill the table in as best it can. One of the methods to fill
this in would be to use the RNID ELS (ANSI document 99-422v0). This allows
one to query a port for the information needed for the link table.
FcConnUnitEv
entType
INTEGER Always status(3). R The type of this event. The
values are defined as follows:
unknown (1), other (2), status
(3), configuration (4), topology
(5).
FcConnUnitEv
entObject
OBJECT
IDENTIFIER
Only the OID of the
fcConnUnit is returned.
Other information is not
supported.
R This is used with the
fcConnUnitEventType to identify
which object the event refers to.
It can be the OID of a
connectivity unit or of another
object like
fcConnUnitPortStatus[...]
fcConnUnitEv
entDescr
SnmpAdmin
String
“Reason code XX”, XX is
the event reason code.
R The description of the event.