1. Overview – SOE Net-SNMP v5.7.2.1
November 2015

2. What is SOE Net-SNMP v ?
UnixSOE Enterprise Suite v10.0 Net-SNMP is a Unix-specific diagnostic tool.
Simple Network Management Protocol (SNMP) is a widely used protocol for monitoring the health and welfare of network equipment (eg. routers), computer equipment and even devices like UPSs
Its designed to be simple
It ‘s Concerned with Network Management
Manage Network performance
Identify and Diagnose the issues
Baseline and plan for Network growth
Its protocol is defined by the IETF(Internet Engineering Task Force)
Most commonly used protocol for collecting management data from the IP Networks.

3. Why is Net-SNMP Needed
Distributed ad-hoc devices across the network including repeaters, routers, bridges switches, hubs ups devices all need management
They all basically receive data in from the network, process it and put data back out on the network
They can sometimes be cumbersome to manage.
Inconsistent and differing interfaces require different resources
Concerned with application enabling managers to define costs related to the network resources.
Tools provide operational statistics about the network like bandwidth utilization, no of pockets received, transmitted, dropped etc.
Enable network admin to restrict or grant access to various network resources.

4. Net-SNMP Architecture
Network elements - Network devices to be managed such as routers, computers and printers
Agents – a software program residing on the network elements which collects and stores information about the managed devices
Managed objects – sets a values describing manageble characteristics of a device.
MIB – Collection of all managed objects for a given device.
Syntax notation – The way MIBs are described.
Structure of management Information – Rules for defining managed objects using ASN.1
Manager – Issues commands and queries to manage devices or workstations that run management applications.

5. Net-SNMP Version Two Major Versions SNMPv1 and SNMPv2
SNMPv1 is recommended standard
SNMPv1operates over protocols such as UDP, IP, OSI connectionless Network Service, Novell internet Packet Exchange.
SNMPv2 is split into
SNMPv2u – SNMPv2 with user based security.
SNMPv2* - SNMPv2 with user based security and additional features.
SNMPv2c – SNMPv2 without security
SNMPv3 – It Provides the three important services: Authentication, Privacy and access control

6. Net-SNMP operations - communities
Managers and agents send messages to each other containing commands and information.
Agents have full access to a device’s configuration.
Security is set up so that only selected managers can request this information.
Security is implemented through SNMP communities
Community defined on the agent
Limit access either RO or RW access
IT can define the several communities with different rights, so different managers get different type of access.

7. Net-SNMP v – what is new?
Snmpd : SECURITY : a denial of service attack vector was discovered on the linux implementation of the ICMP-MIB. This release fixes this bug and all users are encouraged to update their SNMP agent if they make use of the ICMP-MIB table objects.

8. Net-SNMP v5.7.2.1 – Supported OS
Operating System
Version
Architecture
Sun
Solaris 8
Sun Sparc
Solaris 9
Solaris 10
Sun Sparc/x86-64 Architecture
Solaris 11
HP-UX
HP-UX11i
HP PA-RISC
HP-UX11i V2 (11.23)
HP PA-RISC/ HP Itanium
HP-UX11i V3 (11.31)
 AIX
AIX 5.3
IBM pSeries
AIX 6.1
AIX 7.1
Linux
RHEL Server 5.x
x86-64 Architecture
RHEL Server 6.x, RHEL Server 7.x
RHEL Workstation 6.x, RHEL Workstation 7.x
Suse 10
Suse11
Cent OS 5.x(5.5 onwards)
Cent OS 6.x
Oracle Enterprise Linux 5.x
Oracle Enterprise Linux 6.x, Oracle Enterprise Linux 7.x
Zlinux
Zlinux 6.x, Zlinux 7.x

9. Solution Pack Unix SOE & TI Services
Questions & Feedback
Product Support Helpline
EMEA Platform Service Centre Unix & Linux Server Solutions Team