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SIMPLE NETWORK MANAGEMENT PROTOCOL
INTRODUCTION
The Simple Network Management Protocol (SNMP) is an application layer protocol used
to manage network resources. This standardization gives network administrators the
ability to monitor network performance.
Background
The computer networks of today are growing at a tremendous rate. Technology
continually allows consumers and businesses to build bigger and better networks
at more affordable prices. With the increase in the size and number of computer
networks, the need for efficient management of resources has emerged as a
pressing issue for network administrators. Administrators are constantly
maintaining their networks in order to maximize efficiency. The Simple Network
Management Protocol was developed to assist in network resource management.
History
SNMP is a network management specification that has become the standard for
the exchange of network information. Prior to SNMP and other network
management software, administrators would have to be physically attached to
network devices in order to access configuration and troubleshooting data. SNMP
was designed to facilitate this process while reducing the complexity of network
management. The specifications for this protocol can be found in Request For
Comments 1157
Established in the late 1980s, SNMP was developed to tackle the management of
emerging TCP/IP networks. The Internet Engineering Task Force (IETF) had the
task of producing a standard to which LAN-based internetworking devices such
as hubs, bridges, and routers could be monitored. SNMP has grown to be the most
accepted application layer protocol used for this chore. It allows different network
products to be managed by the same management application by setting a
standard to which vendors of network products can interoperate with one another.
SNMP does this by using a subset of the Abstract Syntax Notation One (ASN.1)
encoding scheme.
Versions
There are three versions of SNMP: SNMP version 1 (SNMPv1), SNMP version 2
(SNMPv2) and SNMP version 3 (SNMPv3). SNMPv1
implement but had numerous security problems. SNMPv2
enhanced security and functionality, but was still lacking features in security
3/4/2005
(RFC
1157).
1
Introduction to SNMP
(RFC
1157) was easy to
(RFC
1902) offered
Asante Networks, Inc.
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Summary of Contents for Asante IntraCore 3524-2G
-
Page 1: Simple Network Management Protocol
(SNMPv2) and SNMP version 3 (SNMPv3). SNMPv1 implement but had numerous security problems. SNMPv2 enhanced security and functionality, but was still lacking features in security 3/4/2005 1157). Introduction to SNMP (RFC 1157) was easy to (RFC 1902) offered Asante Networks, Inc. - Page 2 All network devices that are to be SNMP managed need to be fitted with an agent that executes all the MIB objects that are relevant. The agent provides the information contained in the MIB to management applications when asked. 3/4/2005 1156. Asante Networks, Inc. Introduction to SNMP 2271-2275 1155. Typically MIB...
- Page 3 • The read command enables system manager to monitor managed devices. It allows for the examination of different variables that the network device may be collecting. 3/4/2005 Introduction to SNMP Agent Asante Networks, Inc.
- Page 4 • The Set function is used to write a value to an object instance within an agent. • Traps are used by agents to send information to the network management system. 3/4/2005 Introduction to SNMP Asante Networks, Inc.
- Page 5 SNMP also utilizes the User Datagram Protocol (UDP) to deliver packets called protocol data units (PDUs). UDP is a quick method of transmitting data because it has low overhead costs. Unlike TCP, UDP lacks much of the acknowledgement 3/4/2005 Introduction to SNMP Trap Asante Networks, Inc.
- Page 6 Most systems today use TCP/IP. ADVANCED FEATURES Asante incorporates SNMPv1 in its family of IntraCore switches. This protocol is provided as a standard because Asanté understands the necessities required in managing a successful and efficient networking system. With the SNMP functionality, the basic...
- Page 7 VLAN can represent its own broadcast domain, thus allowing for controlled broadcast traffic. The IntraCore family of switches is compliant with the IEEE 802.1Q standard governing the structure and implementation of VLANs. Asante switches offer an unprecedented number of VLANs with support for VLAN tagging for enterprise services.
- Page 8 IEEE 802.3ad protocol. All of Asante’s IntraCore switches incorporate this important feature of port trunking. Asante IntraCore 3524 offers 2 trunk groups for 10/100 ports (4 ports for each group) and 1 trunk for 2 Gigabit ports. Load sharing on link aggregation is supported based on destination address.
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