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Default Configuration
By default, the announcement interval is 0.
Command Mode
Interface Configuration
User Guidelines
The initial log announcement interval is used to initialize the value of
announce interval; it is the mean time interval between transmission of
successive ANNOUNCE messages. The ANNOUNCE interval may be
modified by the operation of the protocol (i.e., it is set to the initial value
when the port is initialized and when a signaling message is received with a
field announce interval set to 126). It may also be modified if the port
receives a signaling message that carries a message interval request TLV.
IEEE 802.1AS must also be enabled globally as well as on an interface to
become operational.
IEEE 802.1AS propagates time information from master clocks and
synchronizes internally with the clock in support of delivering streams to the
destination device with the same relative timing as sampled at the source.
While disabled, IEEE 802.1AS configuration is retained and can be changed,
but is not operationally active.
Refer to IEEE Std. 802.1AS-2011 and IEEE Std. 1588-2008 for further
information on the initialLogAnnounceInterval attribute.
Command History
Introduced in version 6.2.0.1 firmware.
Example
This example configures the switch with an initial log announcement interval
of 3.
console(config-if-Gi1/0/1)#dot1as interval announce 3
console(config-if-Gi1/0/1)#show dot1as interface gi1/0/1
802.1AS Interface Admin Mode................... Enabled
802.1AS Capable................................ No
Is Measuring Delay............................. No
1114
Audio Visual Bridging Commands
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