DNOS-CAPTIVE-PORTAL-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DNOS-CAPTIVE-PORTAL-MIB

Organization: Dell, Inc.

Last Updated: 2011-01-26

Category: Vendor: Dell/DNOS

Description: Manages captive portal configuration for guest network authentication on Dell DNOS switching platforms.

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What Is DNOS-CAPTIVE-PORTAL-MIB?

This is a Dell Networking OS (DNOS) private MIB for managing captive portal functionality used to authenticate guest users on Dell DNOS-based switching platforms before granting them network access. It is a configuration-oriented module, exposing objects that control captive portal policy - such as enabling/disabling the feature, associating it with specific VLANs or interfaces, and defining redirect/authentication parameters for guest sessions. Its relevance to hardware/software status monitoring is indirect: rather than sensor data, it lets an administrator verify the software-level state of the captive portal service (enabled/disabled, active guest sessions) on the switch, functioning as a service/feature status check rather than a physical health metric. No explicit dependency on other MIBs is indicated in the available text, though captive portal features of this kind typically build on the switch's VLAN and interface configuration objects (IF-MIB, Q-BRIDGE-MIB) to apply guest-network policy. It is typically deployed on Dell DNOS access-layer switches in enterprise or campus networks providing guest WiFi/wired network access with a captive-portal authentication step, with the DNOS-CAPTIVE-PORTAL-MIB MIB providing the SNMP hooks to check that service is enabled and running.

IPNetwork Monitor allows you to monitor SNMP objects defined in DNOS-CAPTIVE-PORTAL-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

  • Dell DNOS access-layer switch

Monitoring Examples

No specific object or table names are available for this module in the source excerpt, so a concrete polling scenario cannot be grounded in real identifiers. Based on its stated purpose, an administrator would typically poll a captive portal configuration or status object (analogous to a dnosCaptivePortalAdminStatus or a per-interface captive portal enablement table) to confirm the guest authentication feature is active on the intended VLAN/interface. An unexpectedly disabled status where guest access was expected to be portal-gated would indicate a configuration or feature-licensing problem on the switch.

What Can Be Monitored

  • captive portal enable/disable status
  • guest session state
  • portal-to-VLAN/interface association
Imported Objects

From DELL-REF-MIB

dnOSOBJECT-IDENTITY

From IF-MIB

InterfaceIndex
ifIndexOBJECT-TYPE

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From RFC1213-MIB

DisplayString

From SNMPv2-SMI

Counter32
Counter64
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

MacAddress
RowStatus
TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using cpCaptivePortalClientBytesReceived OID:

Select a Dell DNOS access-layer switch (captive portal guest authentication) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type cpCaptivePortalClientBytesReceived into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. It reports the number of bytes received by this client. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter64-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Manages captive portal authentication configuration, session tracking, and redirect rules on Dell Networking OS switches.

Start monitoring Dell DNOS access-layer switch (captive portal guest authentication) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download DNOS-CAPTIVE-PORTAL-MIB