Chapter 4. SNMP-Compatible Hardware
Determining if you have devices that are manageable by SNMP is a good place to start down the path to network-management Zen. Before we get into how to determine if what you already have is manageable, we will briefly discuss what makes a device SNMP-compatible.
Vendors do not have to implement all the MIBs SNMP provides,[11] but SNMP-manageable devices must support at least MIB-II. It also behooves the vendors to implement some of the more useful MIBs, as well as their own private MIBs, since the ability to manage a product effectively using SNMP is an increasingly important selling point.
What Does SNMP-Compatible Really Mean?
Many vendors claim that their products are SNMP-compatible or compliant. For the most part this is true. What they actually mean is that their product supports a set of SNMP operations, as well as MIB-II. For SNMPv1 compatibility, the supported operations include:
get
get-next
set
get-response
trap
Additionally, if the product is SNMPv2 and SNMPv3 compatible, it must support the following operations:
get-bulk
inform
notification
report
Vendors can choose to support SNMPv1, SNMPv2, SNMPv2, or all three. An SNMP agent that supports two versions of SNMP is called “bilingual.” In recent years, this was restricted to devices supporting SNMPv1 and SNMPv2. Now a device can support all three versions, which technically makes it trilingual. It is possible for an agent to speak all versions of SNMP because SMIv2 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access