GE Reason Switches
Chapter 4
– Functions
REASON SWITCHES-TM-EN-3
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For secure access to the web interface, the HTTPS protocol may be used, which is
disabled by default. When enabled, it is possible to define if access to the web
interface would be automatically redirected from HTTP to HTTPS connection or not.
Access can be restricted to a determined VLAN or IP address range. For each group
of VLAN and IP address range, the following options may be chosen as
communication protocol: HTTP/HTTPS, TELNET/SSH and for remote monitoring, SNMP
protocol.
3.1
SNMP Protocol
The SNMP protocol was created in the mid 1990’s to increase management
information allowed by network devices to send to workstations. Creating a protocol
to send standardized information over IP networks to a server has increased network
maintenance and diagnostics capability. There are dozens of RFC documents related
to SNMP, such as the RFC 1157 (A Simple Network Management Protocol) or RFC
3418 (Management Information Base (MIB) for the Simple Network Management
Protocol). When using this protocol, it is important to list relevant RFC documentation
to the application.
SNMPv1, SNMPv2c and SNMPv3 protocols are available. SNMPv1 was the first
created, and SNMPv3 was the latest version of the management protocol. Reason
Switches support all of the mentioned SNMP versions, and RFC 3584 Standardized
that all versions can coexist in a given network. Whilst SNMPv1 networks can include
SNMPv3 or SNMPv2c protocols, the capabilities of the SNMPv1 agents are not the
same. (as the other version agents). When using different SNMP versions, make sure
that the SNMP manager understands all used versions of the protocol.
Most recent SNMP protocol versions allowed the network administrator to do system
configuration over the protocol. Some general information available is:
Interface speed;
System location;
Interface usage;
CPU and memory usage;
Link errors;
Time since last system boot.
An SNMP system example is shown in the figure below.
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