User's Manual

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Users Manual of CS-6306R
received or the request timeouts. In addition, the trap is sent only once, while the “inform request” can be
resent for many times. Resending "inform request" adds to network communications and causes more load
on network. Therefore, trap and inform request provide balance between reliability and resource. If SNMP
management side needs receiving every notification greatly, then the “inform request” can be used. If you give
priority to the communication amount of the network and there is no need to receive every notification, then
trap can be used.
This switch only supports trap, but we provide the extension for "inform request".
b) SNMP version
System of our company supports the following SNMP versions:
 SNMPv1---simple network management protocol, a complete Internet standard,which is defined in
RFC1157.
 SNMPv2C--- Group-based Management framework of SNMPv2, Internet test protocol, which is defined in
RFC1901.
Layer 3 switch of our company also supports the following SNMP:
 SNMPv3--- a simple network management protocol version 3, which is defined in RFC3410.
SNMPv1 uses group-based security format. Use IP address access control list and password to define the
management side group that can access to agent MIB.
SNMPv3 provides secure access to devices by a combination of authenticating and encrypting packets over
the network.
The security features provided in SNMPv3 are:
 Message integrity—Ensuring that a packet has not been tampered with in-transit.
 Authentication—Determining the message is from a valid source.
 Encryption—Scrambling the contents of a packet prevent it from being seen by an unauthorized source.
SNMPv3 provides for both security models and security levels. A security model is an authentication strategy
that is set up for a user and the group in which the user resides. A security level is the permitted level of
security within a security model. A combination of a security model and a security level will determine which
security mechanism is employed when handling an SNMP packet. Three security models are available, that is,
authentication and encryption, authentication and no encryption, no authentication.
You need to configure SNMP agent to the SNMP version that the management working station supports. The
agent can communicate with many management sides.
c) Supported MIB
SNMP of our system supports all MIBII variables (which will be discussed in RFC 1213) and SNMP traps
(which will be discussed in RFC 1215).
Our system provides its own MIB extension for each system.