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Cisco IOS Command Reference for Cisco Aironet Access Points and Bridges
0L-24115-01
Chapter 2 Cisco IOS Commands for Access Points and Bridges
mbssid (SSID configuration mode)
mbssid (SSID configuration mode)
Use the mbssid SSID configuration mode command to include the SSID name in the beacon and
broadcast probe response and to configure the DTIM period for the SSID.
[no] mbssid [guest-mode] [dtim-period period]
Note This command is supported only on radio interfaces that support multiple basic SSIDs. To determine
whether a radio supports multiple basic SSIDs, enter the show controllers radio_interface command.
Multiple basic SSIDs are supported if the results include this line:
Number of supported simultaneous BSSID on radio_interface: 8
Syntax Description
Defaults Guest mode is disabled by default. The default period is 2, which means that every other beacon contains
a DTIM.
Command Modes SSID configuration interface
Command History
Usage Guidelines The guest mode and DTIM period configured in this command are applied only when MBSSIDs are
enabled on the radio interface.
When client devices receive a beacon that contains a DTIM, they normally wake up to check for pending
packets. Longer intervals between DTIMs let clients sleep longer and preserve power. Conversely,
shorter DTIM periods reduce the delay in receiving packets but use more battery power because clients
wake up more often.
Note Increasing the DTIM period count delays the delivery of multicast packets. Because multicast
packets are buffered, large DTIM period counts can cause a buffer overflow.
If you configure a DTIM period for a BSSID and you also use the beacon command to configure a DTIM
period for the radio interface, the BSSID DTIM period takes precedence.
guest-mode Specifies that the SSID is included in beacons.
dtim-period period Specifies the rate at which the device sends a beacon that contains a
Delivery Traffic Indicator Message (DTIM). Enter a beacon rate
between 1 and 100.
Release Modification
12.3(4)JA This command was introduced.