
SNMP Settings  Polycom DMA System SNMP Support
Polycom, Inc.  413
Table 15-3 Add Notification User dialog box 
Setting Description
Security user  The security user name authorized to receive 
notifications (Traps or Informs). 
Authentication type  The authentication protocol. These protocols are used 
to create unique fixed-size message digests of a 
variable length message. 
Possible values for authentication protocol are:
•MD5—Creates a digest of 128 bits (16 bytes). 
•SHA—Creates a digest of 160 bits (20 bytes). 
Both methods include the authentication key with the 
SNMPv3 packet and then generate a digest of the entire 
SNMPv3 packet. 
Authentication 
password 
Confirm password 
The authentication password that’s used (along with the 
local engine ID) to create the authentication key used by 
the MD5 or SHA message digest. 
Encryption type  The privacy protocol for the connection between the 
DMA system and the SNMP agent:
•DES—Uses a 56-bit key with a 56-bit salt to encrypt 
the SNMPv3 packet. 
•AES—Uses a 128-bit key with a 128-bit salt to 
encrypt the SNMPv3 packet.
Encryption password 
Confirm password 
The password that’s used (along with the local engine 
ID) to create the encryption key used by the privacy 
protocol.