This post describes the eSight's SNMP Poll function:
eSight SNMP polling principle:
Period: 60 min
Function: Polling device SNMP unreachable status.
The internal proccess of the SNMP Poll function is as follows:
1. Obtain the IP addresses of all devices (filter the devices added by using the ICMP and Telnet protocols, and the devices whose status is not online or SNMP unreachable).
2. Check the device. If SNMP is used within 15 minutes (any operation) and the connection is successful, the SNMP is reachable. Otherwise, go to Step 3.
3. Use the SNMP to connect to the device (the timeout period is 15s and retry once). If the connection succeeds, the SNMP is reachable. Otherwise, the SNMP is unreachable.
Some times, there is network delay. As a result, the NMS does not respond to the polling request or the response times out. The interval between two SNMP polling tasks is 60mins. Therefore, if the network quality recovers during this period, the NE status on eSight will not be updated immediately. The Poll interval can be reduced to enhance this process, however the eSight Server performance might be increased.
The Poll interval can be adjuted by modifying the follwoing file and restarting the eSight service:
eSight installation directory/AppBase/etc/poll/snmpPoll.xml
Parameter | Description | Setting | Effective Mode |
|---|---|---|---|
switch | Specifies whether to enable the SNMP polling function. | Data type: boolean Values: true or false Default value: true | Restart |
poller-interval | Specifies the polling interval, in minutes. | Data type: int Value range: 30-180 Default value: 60 Note: If the entered value is smaller than 30, the system automatically changes the value to 30. If the entered value is greater than 180, the system automatically changes the value to 180. | Restart |
Configuration Example
<?xml version="1.0" encoding="UTF-8"?>
<!--Traffic switching configuration file, customized for Alibaba-->
<config name="switchTraffic">
<!--Whether traffic switching is enabled (Traffic switching is disabled by default.) -->
<param name="switch" value="false"></param>
<!-- Traffic switching waiting time (s) -->
<param name="wait-interval" value="30"></param>
</config>
