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Answer Posted / ashish
SNMP is widely used to Monitor , make configh changes ,
trigger alarms to maitain device device reports i.e cpu
stats , interface error, utilization etc.
SNMP query the information also called pollling and get
responses from a SNMP enabled device 1.e. router , switch etc
It uses port 161 for polling and 162 for traps
It uses MIB - Management information bases enbeded in every
device to querry any information from device , there are
OIDs to query almost every information on device.
http://www.alvestrand.no/objectid/1.3.6.1.2.1.html
Two kind of communities can be configured in SNMP Read-only
and Read-wirte
RO - Used to query the information
RW - Used to query and also push the config to device
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