B&B Electronics EIRM-EXTEND-8 - Manual - Manual (Page 23)

Manual Documentation Number: EIRM-EXTEND-8-1411m 17
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
SNMP Agent and MIB-2 (RFC 1213)
The SNMP Agent running on the Ethernet Extender 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 Alarm
MIB-II defines a set of manageable objects in various layers of the TCP/IP
protocol suites. MIB-II 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 Ethernet Extender Switch supports a complete
implementation of SNMP Agent and MIB-II.
RMON MIB (RFC 2819) and Bridge MIB (RFC 1493)
The Ethernet Extender Switch provides hardware-based RMON counters in
the Ethernet Extender Switch chipset. The Ethernet Extender Switch
manager CPU polls these counters periodically to collect the statistics in a
format that complies with the RMON MIB definition.
RMON Groups Supported
The Ethernet Extender Switch supports the following RMON MIB groups
defined in RFC 2819:
- RMON Statistics Group – maintains utilization and error statistics for the
Ethernet Extender Switch port being monitored.