Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Manual do Utilizador descarregar pdf (Página 41)

40 CHAPTER 4  WEB-BASED MANAGEMENT (WBM)

Simple Network Management Protocol (SNMP)

SNMP is a manufacturer-independent standard for Ethernet management and denes com-

mands for reading and writing error and status message information and formats. SNMP

is also a structured model, which comprises agents and their relevant MIB (Management

Information Base) and a manager. e manager is a soware tool, which is executed on a

network management station.

e agents are located inside switches, bus terminals, routers and other devices that sup-

port SNMP. e task of the agents is to collect and provide data in the MIB. e manager

regularly requests and displays this information. e devices can be congured by writing

data from the manager to the MIB. In the event of an emergency, the agents can also send

messages (traps) directly to the manager.

Note

All conﬁguration modiﬁcations, which are to take eect after a switch restart, must

be saved permanently using the “ﬂWorkFWCtrlConfSave” object.

SNMP Interface

e Click 340/341/342 have an SNMP agent. is agent manages Management Information

Base II (MIB 2) according to RFC1213 MIB, bridge MIB, RSTP MIB, RFC1907 MIB, and

private SNMP objects.

Network management stations can read and modify conguration and diagnostic data

from network devices via the Simple Network Management Protocol (SNMP). In addition,

any SNMP tools or network management tools can be used to access the MIB’s via SNMP.

e MIBs supported by the relevant device must be made available to the SNMP manage-

ment tools.

On the one hand, these are globally valid MIBs, which are specied and described in RFCs

(Request for Comment). is includes, for example, MIB2 according to RFC1213, which

is supported by all SNMP-compatible network devices. On the other hand, manufacturers

can specify their own private SNMP objects, which are then assigned to a private manu-

facturer area in the large SNMP object tree. Manufacturers are then responsible for their

own private (enterprise) areas, i.e., they must ensure that only one object is assigned to an

object ID (object name and parameters) and can be published. If an object is no longer

needed, it can be labeled as “expired,” but it cannot be reused with other parameters under

any circumstances.

Reading SNMP objects is not password-protected. However, a password is required for read

access in SNMP, but this is set to “public,” which is usual for network devices, and cannot

be modied. By default upon delivery, the password for write access is “private” and can be

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 75 76

Sem comentários

Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Manual do Utilizador Página 41