4.7.5 IP D
IFFSERV
C
LASSIFICATION
In the late 1990s, the IETF redefined the meaning of the 8-bit SERVICE TYPE field to accommodate a set of
differentiated services (DS). Under the differentiated services interpretation, the first six bits comprise a
codepoint, which is sometimes abbreviated DSCP, and the last two bits are left unused.
IP Diffserve Classification function, it can form total 64 (0~63) kinds of Traffic Class based on the arrangement
of 6-bit field in DSCP of the IP packet. In the switch, user is allowed to set up these 64 kinds of Class that
belong to High or Low Priority.
Table 4-22. IP Diffserv Classification screen options.
Parameter Description
IP Differentiated Services
(DiffServ) Configuration
Used for setting up the IP Differentiated Services Configuration
QoS.
Diffserv
Display 64 (0~63) DiffServ Priority items.
Class
64 kinds of traffic as we mentioned above, user can set up High
Priority or Low Priority for each port respectively.
4.8 SNMP Configuration
Any Network Management System (NMS) running the Simple Network Management Protocol (SNMP) can
manage the Managed devices equipped with SNMP agent, provided that the Management Information Base
(MIB) is installed correctly on the managed devices. The SNMP is a protocol that is used to govern the transfer
of information between SNMP manager and agent and traverses the Object Identity (OID) of the management
Information Base (MIB), described in the form of SMI syntax. SNMP agent is running on the switch to
response the request issued by SNMP manager.
Basically, it is passive except issuing the trap information. The switch supports a switch to turn on or off the
SNMP agent. If you set the field SNMP “Enable”, SNMP agent will be started up. All supported MIB OIDs,
including RMON MIB, can be accessed via SNMP manager. If the field SNMP is set “Disable”, SNMP agent will
be de-activated, the related Community Name, Trap Host IP Address, Trap and all MIB counters will be
ignored.
Table 4-23. SNMP Configuration screen options.
Parameter Description
SNMP Configuration
This function is used to configure SNMP settings, community
name, trap host and public traps as well as the throttle of SNMP.
A SNMP manager must pass the authentication by identifying
both community names, then it can access the MIB information of
the target device. So, both parties must have the same
community name. Once completing the setting, click
Apply
button, the setting takes effect.
CHAPTER 4: Web-Based Management
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