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Gazelle S1503i (A) User Manual
7.1.2 Web
The Gazelle S1503i provides Web management feature. You can log in to, manage, and
maintain the Gazelle S1503i through the Web browser.
Web management employs the graphic management interface and is more easily to access
compared with the CLI mode.
7.1.3 SNMP
Simple Network Management Protocol (SNMP) is designed by the Internet Engineering Task
Force (IETF) to resolve problems in managing network devices connected to the Internet.
Through SNMP, a network management system can manage all network devices that support
SNMP, including monitoring network status, modifying configurations of a network device,
and receiving network alarms. SNMP is the most widely used network management protocol
in TCP/IP networks.
Till now, SNMP has three versions: v1, v2c, and v3, described as below.
The Gazelle S1503i supports v1, v2c, v3 of SNMP.
7.2 Maintenance methods
The Gazelle S1503i caters to users' requirements on operation and maintenance in the aspects
of hardware design and function configuration, thus providing users with powerful
maintenance performance.
The Gazelle S1503i supports diagnosing and testing failures regarding software and hardware.
7.2.1 Ping
Packet Internet Grope (Ping) is the most widely used command for fault diagnosis and
removal. It is usually used to detect whether two hosts are connected or not. Ping is achieved
with ICMP echo packets. If an Echo Reply packet is sent back to the source address during a
valid period after the Echo Request packet is sent to the destination address, it indicates the
route between source and destination address is reachable.
SNMP v1 uses community name authentication mechanism. The community name, a
string defined by an agent, acts like a password. The network management system can
visit the agent only by specifying its community name correctly. If the community name
carried in a SNMP packet is not authorized by the Gazelle S1503i, the packet will be
discarded.
Compatible with SNMP v1, SNMP v2c also uses community name authentication
mechanism. SNMP v2c supports more operation types, data types, and error codes, and
thus better identifying errors.
SNMP v3 uses User-based Security Model (USM) and View-based Access Control
Model (VACM) security mechanism. You can configure whether USM authentication is
enabled and whether encryption is enabled to provide higher security. USM
authentication mechanism allows authenticated senders and prevents unauthenticated
senders. Encryption is to encrypt packets transmitted between the network management
system and agents, thus preventing interception.
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7 Management and maintenance
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