Cisco SCE2020-4XGBE-SM - SNMP Protocol; The SNMP Interface

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Cisco SCE 2000 and SCE 1000 Software Configuration Guide
OL-7827-12
Chapter 5 Configuring the Management Interface and Security
Configuring and Managing the SNMP Interface
The SNMP Interface
The SCE platform operating system includes a Simple Network Management Protocol (SNMP) agent
that supports the following:
• RFC 1213 standard (MIB-II)
• RFC 2737 standard (ENTITY-MIB version 2)
• pcube enterprise MIBs
SNMP Protocol
SNMP (Simple Network Management Protocol) is a set of protocols for managing complex networks.
SNMP works by sending messages, called protocol data units (PDUs), to different parts of a network.
SNMP-compliant devices, called agents, store data about themselves in Management Information Bases
(MIBs) and return this data to the SNMP requesters.
SCE platform supports the original SNMP protocol (also known as SNMPv1), and a newer version called
Community-based SNMPv2 (also known as SNMPv2C).
• SNMPv1 — is the first version of the Simple Network Management Protocol, as defined in RFCs
1155 and 1157, and is a full Internet standard. SNMPv1 uses a community-based form of security.
• SNMPv2c — is the revised protocol, which includes improvements to SNMPv1 in the areas of
protocol packet types, transport mappings, and MIB structure elements but using the existing
SNMPv1 administration structure. It is defined in RFC 1901, RFC 1905, and RFC 1906.
SCE platform implementation of SNMP supports all MIB II variables, as described in RFC 1213, and
defines the SNMP traps using the guidelines described in RFC 1215.
The SNMPv1 and SNMPv2C specifications define the following basic operations that are supported by
SCE platform. Table 5-2 lists the request types and their descriptions.
Table 5-2 Request Types
Request Type Description Remarks
Set Request Writes new data to one or more of the
objects managed by an agent.
Set operations immediately
affect the SCE platform
running-config but do not affect
the startup config
Get Request Requests the value of one or more of the
objects managed by an agent.
Get Next Request Requests the Object Identifier(s) and
value(s) of the next object(s) managed by an
agent.
Get Response Contains the data returned by an agent.