Installation & Operation Manual 172 Document # LTRT-92224
Mediant 8000
5. The Media Gateways SNMP management interface may operate in one of the
following modes:
• SNMPv2 – a simple default management mode widely deployed in many
closed networks, has a relatively weak security model based on the plain-
text read and write community strings and therefore is a security threat for
systems connected to the public networks (e.g. Internet): IPSEC/IKE
encryption may be optionally configured for specific SNMP managers (see
'Configuring IPSEC/IKE for Management Interfaces (on SC boards)' on page
341; however, it is not enforced on the incoming SNMP port 161.
• SNMPv2 + IPSEC – a secure version of the SNMPv2 management mode;
communication between the Media Gateway and all SNMP managers
(including the EMS server) is secured via the IPSEC/IKE protocol with a pre-
shared key; use of the IPSEC/IKE is enforced on the incoming SNMP port
161, therefore all SNMP managers (EMS, NMS, OSS) must have a proper
IPSEC/IKE association configured.
• SNMPv3 – the latest and secure version of the SNMP management
protocol:
6. At the SNMP mode prompt, choose the SNMP management mode to be used by
the Media Gateway.
SNMP Mode (0-SNMPv2, 1-SNMPv3, 2-SNMPv2+IPSEC) [0]: 0
7. At the EMS Server IP Address prompt, enter the IP address of the EMS server.
EMS Server IP Address [10.7.6.21]: 10.7.6.21
8. If you have chosen SNMPv3 mode, you must enter EMS Security Name, EMS
Authentication Protocol, EMS Authentication Key, EMS Privacy Protocol
and EMS Privacy Key parameters.
a. At the EMS Security Name prompt, enter the SNMPv3 User Name that will
be used by EMS Server when connecting to the Media Gateway.
EMS Security Name [EMSUser]: EMSUser
b. At the EMS Authentication Protocol prompt, enter the SNMPv3
Authentication Protocol that will be used between the EMS server and the
Media Gateway. Authentication protocol ensure that SNMP messages
exchanged between the participants are from a valid source.
EMS Authentication Protocol (0-No, 1-MD5, 2-SHA1) : 1
c. At the EMS Authentication Key prompt, enter the key that will be used to
ensure authentication of SNMPv3 messages.
EMS Authentication Key [leave unchanged]: ******
d. At the EMS Privacy Protocol prompt, enter the SNMPv3 Privacy Protocol
that will be used between the EMS Server and the Media Gateway. Privacy
protocol performs encryption of the SNMP packets to prevent snooping by
unauthorized source.
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