Cisco NCS 5000 Series User Manual

• set-request—Operation that stores a value in a specific variable.
• trap—Unsolicited message sent by an SNMP agent to an SNMP manager when some event has occurred.
Table 1 identifies other key SNMP features supported by the SNMP v1, v2c, and v3.
Table 2: SNMPv1, v2c, and v3 Feature Support
SNMP v3SNMP v2cSNMP v1Feature
YesYesNoGet-Bulk Operation
Yes (No on the
Cisco IOS XR software)
Yes (No on the
Cisco IOS XR software)
NoInform Operation
YesYesNo64 Bit Counter
YesYesNoTextual Conventions
YesNoNoAuthentication
YesNoNoPrivacy (Encryption)
YesNoNoAuthorization and Access
Controls (Views)
Security Models and Levels for SNMPv1, v2, v3
The security level determines if an SNMP message needs to be protected from disclosure and if the message
needs to be authenticated. The various security levels that exist within a security model are as follows:
• noAuthNoPriv—Security level that does not provide authentication or encryption.
• authNoPriv—Security level that provides authentication but does not provide encryption.
• authPriv—Security level that provides both authentication and encryption.
Three security models are available: SNMPv1, SNMPv2c, and SNMPv3. The security model combined with
the security level determine the security mechanism applied when the SNMP message is processed.
Table 1 identifies what the combinations of security models and levels mean.
Table 3: SNMP Security Models and Levels
What HappensEncryptionAuthenticationLevelModel
Uses a community
string match for
authentication.
NoCommunity stringnoAuthNoPrivv1
System Management Configuration Guide for Cisco NCS 5000 Series Routers, IOS XR Release 6.2.x
22
Implementing SNMP
SNMP Versions

Cisco NCS 5000 Series Specifications

General

Brand	Cisco
Model	NCS 5000 Series
Category	Network Router
Language	English