Installation manual

4-90
SIGNAMAX LLC • www.signamax.eu
snmp-server engine-id
This command configures an identification string for the SNMPv3 engine. Use the no
form to restore the default.
Syntax
snmp-server engine-id {local | remote {ip-address}} engineid-string
no snmp-server engine-id {local | remote {ip-address}}
• local - Specifies the SNMP engine on this switch.
• remote - Specifies an SNMP engine on a remote device.
• ip-address - The Internet address of the remote device.
• engineid-string - String identifying the engine ID. (Range: 10-64 hexadecimal
characters representing 5-32 octets)
Default Setting
A unique engine ID is automatically generated by the switch based on its MAC
address.
Command Mode
Global Configuration
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 snmp-server
host on page 4-87.) The remote engine ID is used to compute the security digest
for authenticating and encrypting packets sent to 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 “123456789” is equivalent to “1234567890” because a trailing zero will be
added to fill in the last octet if an odd number of hexadecimal characters is
specified.
• 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 4-95).
Example
Console(config)#snmp-server engine-id local 123456789
Console(config)#snmp-server engineID remote 987654321 192.168.1.19
Console(config)#