Overview – SOE Net-SNMP v5.7.2 Dec 2013

What is SOE Net-SNMP v5.7.2? UnixSOE Enterprise Suite v8.3 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.

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.

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.

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

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.

Net-SNMP v5.7.2 – what is new? BUG: 3526549: CVE-2012-2141 Array index error leading to crash BUG: 3532090: Fix high ifIndex values crashing hrDeviceDescr PATCH: 2091156: correctly declare dependencies in Makefile. 'make j <N>' should work now. Backport this to V5-4 as it is needed for correct operation in the single threaded case of make miblib as well. Many other miscellaneous minor bug fixes

Net-SNMP v5.7.2 – 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 Workstation 6.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 Zlinux Zlinux 6.x

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