Installation guide

WATERS NETWORK SYSTEMS™ ProSwitch
®
- 2600M User’s Manual Page
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SNMP Agent and MIB-2 (RFC1213)
The SNMP Agent running on the switch manager CPU is responsible for:
 Retrieving MIB counters from various layers of software modules according to the SNMP GET/GET NEXT
frame messages.
 Setting MIB variables according to the SNMP SET frame message.
 Generating an SNMP TRAP frame message to the Network Management Station if the threshold of a
certain MIB counter is reached or if other trap conditions (such as the following) are met:
 Warm start
 Cold start
 Link up
 Link down
 Authentication failure
 Rising alarm
 Falling alarm
 Topology change
MIB-2 defines a set of manageable objects in various layers of the TCP/IP protocol suites. MIB-2 covers all
manageable objects from Layer 1 to Layer 4 and, as a result, is the major SNMP MIB supported by all vendors
in the networking industry. The 2600M supports a complete implementation of SNMP Agent and MIB-2.
RMON MIB (RFC1757) and Bridge MIB (RFC1493)
The 2600M provides hardware-based RMON counters in the switch chipset. The switch manager CPU polls
these counters periodically to collect the statistics in a format that complies with the RMON MIB definition.
RMON Group Supported
The 2600M supports the following RMON MIB groups defined in RFC1757:
 RMON Statistics Group - maintains utilization and error statistics for the switch port being monitored.
 RMON History Group - gathers and stores periodic statistical samples from the previous Statistics Group.
 RMON Alarm Group - allows a network administrator to define alarm thresholds for any MIB variable. An
alarm can be associated with Low Threshold, High Threshold, or both. A trigger can trigger an alarm when
the value of a specific MIB variable exceeds a threshold, falls below a threshold, or exceeds or falls below a
threshold.
 RMON Event Group - allows a network administrator to define actions based on alarms. SNMP Traps are
generated when RMON Alarms are triggered. The action taken in the Network Management Station
depends on the specific network management application.
Bridge Group Supported
The 2600M supports the following four groups of Bridge MIB (RFC1493):
 The dot1dBase Group - a mandatory group that contains the objects applicable to all types of bridges.
 The dot1dStp Group - contains the objects that denote the bridge's state with respect to the Spanning
Tree Protocol. If a node does not implement the Spanning Tree Protocol, this group will not be
implemented. This group is applicable to any transparent only, source route, or SRT bridge that implements
the Spanning Tree Protocol.
 The dot1dTp Group - contains objects that describe the entity's transparent bridging status. This group is
applicable to transparent operation only and SRT bridges.
 The dot1dStatic Group - contains objects that describe the entity's destination-address filtering status.