IBM 8239 Token-Ring Stackable Hub, Setup And User Manual

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Accessing Surrogate Group Information
The Surrogate Group information can be obtained using the following methods.
¹
SNMP
– Using the IBM Token Ring Surrogate MIB, surrogateStatusTable. For this
MIB, the ibmTokenRing object identifier (OID) is 1.3.6.1.4.1.2.5 and the
tokenringSurrogate OID is ibmTokenRing.1.
– For the Surrogate Group administrative state, issue an SNMP Get request
for the appropriate object in the 8239 MIB
¹
The terminal interface, using the following commands:
– DISPLAY TR_SURROGATE SURR_STATUS
This command displays all of the information associated with the
surrogateStatusTable and also provides the administrative state of the
Surrogate Group.
– DISPLAY MANAGEMENT_INTERFACE
This command provides the administrative state of the Surrogate Group,
that is, whether the Surrogate Group is enabled or disabled. It also
identifies the ring segment number that is currently being used. This value
can differ from the ring segment number displayed with the DISPLAY
TR_SURROGATE command, as described in detail below.
– SET TR_SURROGATE SEGMENT_NUMBER
This command configures the Surrogate Agent with a ring segment.
The MAC address used by the Surrogate Agent is the same MAC address that is
associated with the Management Interface.
The ring segment number is the number that is to be used when the 8239 Model 1
is the RPS. When the 8239 Model 1 RPS function is not enabled and there is no
external RPS on the ring, then the ring segment number should be set so that the
8239’s RMON agent can update its source-routing statistics properly.
The ring segment number obtained by issuing the DISPLAY TR_SURROGATE
SURR_STATUS command or an SNMP Get Request of the surrogateStatusTable
in the Surrogate MIB is always the ring segment number that you configure for the
8239 Model 1 using the SET TR_SURROGATE SEGMENT_NUMBER command or
the SNMP Set Request to the surrogateStatusTable.
The ring segment number that is displayed using the DISPLAY
MANAGEMENT_INTERFACE command or an SNMP Get request to the
appropriate object in the 8239 MIB is the active ring number known for the ring.
The 8239 Model 1’s configured ring number and the active ring number can be
different if there is an external RPS on the ring that is using a different ring number
from that configured on the 8239.
The ring utilization displayed using the DISPLAY TR_SURROGATE
SURR_STATUS command is a percentage of the calculated ring utilization with a
range from 0 to 100. When it is obtained via SNMP, it is a percentage of the
calculated ring utilization in tenths of a percent with a range from 0 to 1000.
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8239 Setup and User’s Guide