User`s manual

TN-5516/5518 Series Featured Functions
3-18
Configuring SNMP
The TN-5500 supports SNMP V1, V2c, and V3. SNMP V1 and SNMP V2c use a community string match for
authentication, which means that SNMP servers access all objects with read-only or read/write permissions
using the community strings public and private by default. SNMP V3 requires that you select an authentication
level of MD5 or SHA, and is the most secure protocol. You can also enable data encryption to enhance data
security.
Supported SNMP security modes and levels are shown in the following table. Select the security mode and level
that will be used to communicate between the SNMP agent and manager.
Protocol
Version
UI Setting Authentication Encryption Method
V1, V2c Read
Community
Community string No
T
his uses a community string match for
authentication.
SNMP V1,
V2c
V1, V2c
Write/Read
Community
Community string
No
T
his uses a community string match for
authentication.
No-Auth No No
T
his uses an account with admin or user
to access objects
MD5 or SHA Authentication
based on MD5 or
SHA
No This provides authentication based on
HMAC-MD5, or HMAC-SHA algorithms.
8-character passwords are the
minimum requirement for
authentication.
SNMP V3
MD5 or SHA Authentication
based on MD5 or
SHA
Data encryption
key
This provides authentication based on
HMAC-MD5 or HMAC-SHA algorithms,
and data encryption key. 8-character
passwords and a data encryption key
are the minimum requirements for
authentication .and encryption.
These parameters are configured on the SNMP page. A more detailed explanation of each parameter is given
below the figure.