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CHAPTER 3
INTRODUCTION TO CLI
'F's are not allowed. The SNMPv3 architecture uses the User-based Security Model (USM) for message security
and the View-based Access Control Model (VACM) for access control. For the USM entry, the usmUserEngineID
and usmUserName are the entry's keys. In a simple agent, usmUserEngineID is always that agent's own
snmpEngineID value. The value can also take the value of the snmpEngineID of a remote SNMP engine with
which this user can communicate. In other words, if user engine ID equal system engine ID then it is local user;
otherwise it is a remote user.
{ md5 <md5_passwd> | sha <sha_passwd> }: Indicates the authentication protocol that this entry should belong
to. Possible authentication protocols are:
md5 <md5_passwd>:
An optional flag to indicate that this user uses MD5 authentication protocol. A string
identifying the authentication password phrase. For MD5 authentication protocol, the allowed string length
is 8 to 32 characters. For SHA authentication protocol, the allowed string length is 8 to 40 characters. The
allowed content is ASCII characters from 0x21 to 0x7E.
sha <sha_passwd>:
An optional flag to indicate that this user uses SHA authentication protocol. A string
identifying the authentication password phrase. For MD5 authentication protocol, the allowed string length
is 8 to 32 characters. For SHA authentication protocol, the allowed string length is 8 to 40 characters. The
allowed content is ASCII characters from 0x21 to 0x7E.
[ priv { des | aes } <priv_passwd> ] ]: Indicates the privacy protocol that this entry should belong to. Possible
privacy protocols are:
DES
: An optional flag to indicate that this user uses DES authentication protocol.
AES:
An optional flag to indicate that this user uses AES authentication protocol.
<priv_passwd>:
A string identifying the privacy password phrase. The allowed string length is 8 to 32, and
the allowed content is ASCII characters from 0x21 to 0x7E.
Negation:
(config)# no snmp-server user <username> engine-id <engineID>
Show:
#show snmp user [ <username> <engineID> ]
3.9.44.12 (config)# snmp-server version
Syntax:
(config)# snmp-server version { v1 | v2c | v3 }
Explanation:
Configure SNMP server version.
Parameters:
{ v1 | v2c | v3 }: Specify which SNMP server version you want to use.
Example:
Set SNMP server version to v3.
Negation:
(config)# no snmp-server version
Show:
# show snmp
# config t
(config)# snmp-server version v3
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