WEBVTT

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Select a configured device and open the SNMP browser from the topology toolbar.

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Use a permitted SNMP version and the credentials configured on that device.

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Browse the MIB tree to inspect an object’s identifier, syntax and access level.

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Enter the complete instance identifier and use Get to read the device name.

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GetNext reads the next available object after the supplied identifier.

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Walk reads the objects below a selected branch.

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GetBulk retrieves multiple results in a single operation.

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A missing object is reported separately from a query rejected for invalid credentials.

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Read the interface descriptions before choosing an interface index to change.

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Use Get to check that interface’s administrative status before changing it.

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A read-only community can read this object but cannot change its value.

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With a permitted write community, set the administrative status to down.

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The device console confirms that the interface is now administratively down.

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Restore the interface to up, then read its status back.

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Refresh repeats the last read operation, so it does not repeat the previous write.

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The console and a successful ping confirm that the restored link is working.

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For SNMP version three, choose a configured user and the appropriate security level.

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This user can read the device name through its permitted view.

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A query outside that view is denied, with the deciding view and reason shown.

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Authenticated security levels require the corresponding passphrase fields.

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This browser checks presence, not passphrase correctness; it does not prove encrypted SNMP authentication.

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If a device has no configured agent, the MIB tree remains browsable but queries are disabled.

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Finish with the changed interface restored and use permitted credentials for further queries.