Chapter 5
| SNMP Commands
SNMPv3 Commands
– 191 –
Command Usage
◆ An SNMP engine is an independent SNMP agent that resides either on this
switch or on a remote device. This engine protects against message replay,
delay, and redirection. The engine ID is also used in combination with user
passwords to generate the security keys for authenticating and encrypting
SNMPv3 packets.
◆ A remote engine ID is required when using SNMPv3 informs. (See the snmp-
server host command.) The remote engine ID is used to compute the security
digest for authentication and encryption of packets passed between the switch
and a user on the remote host. SNMP passwords are localized using the engine
ID of the authoritative agent. For informs, the authoritative SNMP agent is the
remote agent. You therefore need to configure the remote agent’s SNMP
engine ID before you can send proxy requests or informs to it.
◆ Trailing zeroes need not be entered to uniquely specify a engine ID. In other
words, the value “0123456789” is equivalent to “0123456789” followed by 16
zeroes for a local engine ID.
◆ A local engine ID is automatically generated that is unique to the switch. This is
referred to as the default engine ID. If the local engine ID is deleted or changed,
all SNMP users will be cleared. You will need to reconfigure all existing users
(page 193).
Example
Console(config)#snmp-server engine-id local 1234567890
Console(config)#snmp-server engineID remote 9876543210 192.168.1.19
Console(config)#
Related Commands
snmp-server host (187)
snmp-server group This command adds an SNMP group, mapping SNMP users to SNMP views. Use the
no form to remove an SNMP group.
Syntax
snmp-server group groupname {v1 | v2c | v3 {auth | noauth | priv}}
[read readview] [write writeview] [notify notifyview]
no snmp-server group groupname
groupname - Name of an SNMP group. A maximum of 22 groups can be
configured. (Range: 1-32 characters)
v1 | v2c | v3 - Use SNMP version 1, 2c or 3.
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