Paradise 205486 REV F - Manual (Page 134)

134 208495 REV C Operations Manual, HPA2, Compact Outdoor SSPA
10.3.2 SNMP V3 implementation issues in Teledyne Paradise Datacom SSPAs
Simple Network Management Protocol (SNMP) is an interoperable standards-based protocol
that allows for external monitoring of the Content Engine through an SNMP agent.
A SNMP-managed network consists of three primary components: managed devices, agents,
and management systems. A managed device is a network node that contains a SNMP agent
and resides on a managed network. Managed devices collect and store management infor-
mation and use SNMP to make this information available to management systems that use
SNMP. Managed devices include routers, access servers, switches, bridges, hubs, computer
hosts, and printers.
An agent is a software module that has local knowledge of management information and
translates that information into a form compatible with SNMP: the Management Information
Base (MIB). The agent can send traps, or notification of certain events, to the manager.
Essentially, Teledyne Paradise Datacom SSPA is considered a “SNMP agent”.
A manager is a software module that listens to the SNMP notifications sent by SNMP agents.
The manager can also send requests to an agent to collect remote information from the Man-
agement Information Base (MIB).
The communication between the agent and the manager uses the SNMP protocol, which is
an application of the ASN.1 BER (Abstract Syntax Notation 1 with Basic Encoding Rules),
typically over UDP (for IP networks).
Version 1 (SNMPv1, described in RFC 1157) is the initial implementation of SNMP.
Version 2 (SNMPv2c, described in RFC 1902) is the second release of SNMP. It provides ad-
ditions to data types, counter size, and protocol operations.
Version 3 (SNMPv3, described in RFC 2271 through RFC 2275) is the most recent version of
SNMP.
SNMP V1
SNMP version 1 (SNMPv1) is the initial implementation of the SNMP protocol. SNMPv1 op-
erates over protocols such as User Datagram Protocol (UDP), Internet Protocol (IP), OSI
Connectionless Network Service (CLNS), AppleTalk Datagram-Delivery Protocol (DDP), and
Novell Internet Packet Exchange (IPX). SNMPv1 is widely used and is the de-facto network-
management protocol in the Internet community.
The Teledyne Paradise Datacom SSPA family of products utilizes the most popular imple-
mentation, SNMP V1 over UDP transport layer.
SNMP V2
SNMPv2 (
RFC 1441 – RFC 1452 ) revises version 1 and includes some improvements in the
areas of performance, security, confidentiality, and manager-to-manager communications. It