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Remotely reboot (reload) Cisco IOS via snmp

posted Jun 23, 2011, 5:48 AM by Daniele Albrizio   [ updated May 22, 2017, 6:11 AM ]
Close your router to all unauthorized hosts first:

conf term
  ip access-list standard acl_snmp
    deny any

Then enable explicitly shutdown via snmp set:

snmp-server system-shutdown

! Enables system shutdown using the SNMP message reload feature.
snmp-server community verysecret rw acl_snmp

From your management host issue:
$> snmpset -v1 -c verysecret targethost.domain . i 2

Your router / AP will be immediately reloaded.