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PowerConnect B-Series FCX Configuration Guide 1365
53-1002266-01
Chapter
40
Securing SNMP Access
Table 236 lists individual Dell PowerConnect switches and the SNMP access methods they
support. These features are supported in the Layer 2, base Layer 3, edge Layer 3, and full Layer 3
software images, except where explicitly noted.
SNMP overview
SNMP is a set of protocols for managing complex networks. SNMP sends messages, called protocol
data units (PDUs), to different parts of a network. SNMP-compliant devices, called agents, store
data about themselves in Management Information Bases (MIBs) and return this data to the SNMP
requesters.
Chapter 32, “Securing Access to Management Functions” introduced a few methods used to
secure SNMP access. They included the following:
• “Using ACLs to restrict SNMP access” on page 1140
• “Restricting SNMP access to a specific IP address” on page 1142
• “Restricting SNMP access to a specific VLAN” on page 1145
• “Disabling SNMP access” on page 1149
This chapter presents additional methods for securing SNMP access to Dell PowerConnect devices.
It contains the following sections:
• “Establishing SNMP community strings”
• “Using the user-based security model”
• “SNMP v3 Configuration examples”
• “SNMP version 3 traps”
• “Displaying SNMP Information”
• “SNMP v3 Configuration examples”
TABLE 236 Supported SNMP access features
Feature PowerConnect B-Series FCX
SNMP v1, v2, v3 Yes
Community strings Yes
User-based security model for SNMP v3 Yes
SNMP v3 traps Yes
Defining the UDP port for SNMP v3 traps Yes
SNMP v3 over IPv6 Yes
AES encryption for SNMP v3 Yes