D-Link Unified Access System
Software User Manual
12/10/09
Page 124
Defining SNMP Parameters
Document
34CSFP6XXUWS-SWUM100-D7
Figure 63: sFlow Sampler Configuration
Table 53: sFlow Sampler Configuration
D
EFINING
SNMP P
ARAMETERS
Simple Network Management Protocol (SNMP) provides a method for managing network devices. The device supports
SNMP version 1, SNMP version 2, and SNMP version 3. The Web interfaces supports configuration of SNMPv1 and v2;
SNMPv3 is supported only in the CLI.
SNMP
V
1
AND
V
2
The SNMP agent maintains a list of variables, which are used to manage the device. The variables are defined in the
Management Information Base (MIB). The MIB presents the variables controlled by the agent. The SNMP agent defines the
MIB specification format, as well as the format used to access the information over the network. Access rights to the SNMP
agent are controlled by access strings.
SNMP
V
3
SNMP v3 also applies access control and a new traps mechanism to SNMPv1 and SNMPv2 PDUs. In addition, the
User
Security Model (USM) is defined for SNMPv3 and includes:
•
Authentication
: Provides data integrity and data origin authentication.
Field
Description
Slot/Port
The sFlow Datasource for this sFlow sampler. This Agent will support Physical ports only.
Receiver Index
The sFlow Receiver for this sFlow sampler. If set to zero, no packets will be sampled. Only active
receivers can be set. If a receiver expires, then all samplers associated with the receiver will also
expire. The allowed range is 1 to 8.
Sampling Rate
The statistical sampling rate for packet sampling from this source. A sampling rate of one (1) counts all
packets. A sampling rate of zero (0) disables sampling. The allowed range is 1024 to 65536.
Maximum
Header Size
The maximum number of bytes that should be copied from a sampled packet. The allowed range is 20
to 256.