What HappensEncryptionAuthenticationLevelModel
Provides
authentication based
on the HMAC-MD5
or HMAC-SHA
algorithms. Provides
DES
7
56-bit
encryption in
addition to
authentication based
on the CBC
8
DES
(DES-56) standard.
DESHMAC-MD5 or
HMAC-SHA
authPrivv3
Provides
authentication based
on the HMAC-MD5
or HMAC-SHA
algorithms. Provides
168-bit 3DES
9
level
of encryption.
3DESHMAC-MD5 or
HMAC-SHA
authPrivv3
Provides
authentication based
on the HMAC-MD5
or HMAC-SHA
algorithms. Provides
128-bit AES
10
level
of encryption.
AESHMAC-MD5 or
HMAC-SHA
authPrivv3
4
Hash-Based Message Authentication Code
5
Message Digest 5
6
Secure Hash Algorithm
7
Data Encryption Standard
8
Cipher Block Chaining
9
Triple Data Encryption Standard
10
Advanced Encryption Standard
Use of 3DES and AES encryption standards requires that the security package (k9sec) be installed. For
information on installing software packages, see Upgrading and Managing Cisco IOS XR Software.
SNMPv3 Benefits
SNMPv3 provides secure access to devices by providing authentication, encryption and access control. These
added security benefits secure SNMP against the following security threats:
• Masquerade—The threat that an SNMP user may assume the identity of another SNMP user to perform
management operations for which that SNMP user does not have authorization.
Cisco ASR 9000 Series Aggregation Services Router System Management Configuration Guide, Release 5.1.x
361
Implementing SNMP
SNMPv3 Benefits