- Paperback: 300 pages
- Publisher: O'Reilly Media; 1 edition (October 15, 2001)
- Language: English
- ISBN-10: 0596000200
- ISBN-13: 978-0596000202
- Product Dimensions: 7 x 0.8 x 9.2 inches
- Shipping Weight: 1.2 pounds (View shipping rates and policies)
- Average Customer Review: 13 customer reviews
- Amazon Best Sellers Rank: #2,660,329 in Books (See Top 100 in Books)
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Essential SNMP 1st Edition
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Without Simple Network Management Protocol (SNMP), network administrators might have to actually get out of their chairs and go see what's up with all of the network-connected equipment under their authority. Perish the thought. Essential SNMP explains how the management protocol works and how it's implemented by several operating systems and pieces of equipment. More importantly, this book shows its reader--who should be a network administrator who's familiar with the problems of running a distributed network--how SNMP can earn its place as a network administration tool. In other words, this book examines SNMP as a strategic resource as well as a technical phenomenon.
Because it's oriented toward SNMP as a tool, much of the coverage in this book has to do with software that uses SNMP to provide network monitoring and control services. After a strengths-and-weaknesses overview of a number of SNMP packages, the authors use mainly HP OpenView, Castle Rock SNMPc, and Net-SNMP (the last in combination with Perl scripting) to demonstrate how SNMP works and how to take advantage of it. It's the scripting that really distinguishes this book from other SNMP books, by the way. It's integral to the authors' presentation, and the latter half of this book is packed with shell and Perl listings. --David Wall
Topics covered: Simple Network Management Protocol (SNMP) and its applicability as a network management tool. Details like object identifiers (OIDs), management information bases (MIBs), traps, and community strings are defined and explained. The configuration of SNMP agents is detailed for several software packages and operating systems, and the integration of SNMP and scripts (in shell languages and in Perl) is covered nicely.
"If you know the basics of TCP/IP networking and need, or want, to learn about SNMP from the ground up, this title has pretty much all the information you need along with a lot of helpful advice. Recommended." - Rick Stones, Cvu, February 2003
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This book also describes the various types of Network Management Services architectures, the compatible hardware and network management software available, how to configure specific SMNP agents to monitor a specific device on a network, and how polling works, among other topics.
As always with O'Reilly books, there's a wealth of reference information at the back of the book (for example, Using Input and Output Octects, command line tools, and a list of SNMP RFC's to refer to for more information). If you're a sys admin or anyone else desiring to learn more about SMNP, this book covers a lot of important SMNP information.
I highly recommend this to anyone who is looking for a practical SNMP managed network, beginner or advanced.
I first heard about this book shortly after it was published while I was working at Hewlett Packard where it was highly recommended reading for someone working with HP OpenView Network Node Manager (NNM). I put it on my "to do" list, but never got around to reading it until now, and I'm sorry I waited so long. This is an excellent book for teaching you the basics of SNMP and quite a good tutorial on HP's NNM as well. Even though I have worked with NNM intermittently for the past five years I still learned a few things NNM can do that I wasn't aware of. This gave me a lot of confidence in the author's knowledge of the subject matter.
The book logically progresses from describing what SNMP is, the structure of the information in SNMP, what a Network Management System (NMS) is, hardware considerations in SNMP management, NMS software and issues around polling, traps, and adopting SNMP to your specific environment. The appendices take a closer look at using MIB-II input and output octet counters, customizing HP NNM, Net-SNMP tools, SNMP support in Perl, RFCs relevant to SNMP, and SNMPv3.
I found that the authors provided a very balanced look at the potential of SNMP management. The book is full of good advice for how to go about setting up SNMP monitoring, describing both the pros and cons of this type of management. I liked the fact that they discussed a range of SNMP agents and NMS', from the free NET-SNMP and MRTG to enterprise solutions like HP OpenView, and some intermediate solutions like Castlerock's SNMPpc. The examples are good at demonstrating the concepts and possibly even useful code to download from the O'Reilly site to get you going with SNMP. I liked the fact that the authors usually provided the sample code in three flavours - net-snmp, HP NNM, and perl.
This book was published in 2001 and since then networks have evolved. Enterprise networks have become more complex with VLANs and more redundancy, new services, and higher level protocols like OSPF, HSRP, CDP, SIP, VoIP now in common use. The MIBs to understand these environments are proprietary so homegrown SNMP solutions are not as useful as they were in simpler times. Occasional SNMP exploits have resulted in many network managers disabling SNMP, even on internal networks, or disabling SNMP traffic between subnets. Also the plaintext transmission of SNMP's security mechanism known as the "community string" in SNMP v1 and v2c does not fit well in an increasingly hostile network environment. SNMP v3 addresses the community string issue, but vendor support for this protocol is still lacking. Even HP's NNM has SNMP v3 support as an extra cost 3rd party item.
In summary, I recommend this book to anyone with a need to do basic network or server monitoring. It is an eye opener for the potential of SNMP as a management tool. Be aware that for network devices, SNMP is provided by the device vendor, and most are still supporting version 1 or v2c where v3 is probably the minimum requirement in today's networks.
I dont care about open view.. or solar winds.. i wanted to learn about snmp... not some vendors software package. Im suprised that this got published with such a general title.. when really the book is an snmp intro, followed by how to setup a proprietary monitoring tool.