Netgear GSM4248P User Manual - Page 309
AS timing and synchronization, Con and view the global 802.1AS settings
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AV Line of Fully Managed Switches M4250 Series Main User Manual 14. In the Ports table, click each port that you want to make a member of the LAG. 15. Click the Apply button. Your settings are saved. 16. To save the settings to the running configuration, click the Save icon. 802.1AS timing and synchronization 802.1AS timing and synchronization is an audio video bridging (AVB) feature. The 802.1AS feature requires a license. For information about purchasing a license, contact NETGEAR or your local NETGEAR reseller. The IEEE 802.1AS standard specifies the protocol and procedures used to ensure that the QoS requirements are guaranteed for time-sensitive applications, such as audio and video. The IEEE 1588 Precision Time Protocol (PTP) forms the basis of the IEEE 802.1AS standard. PTP specifies a precise clock synchronization protocol that relies on time-stamped packets. For information about configuring PTP, see Precision Time Protocol on page 79. The PTP protocol is applicable to distributed systems that consist of one or more nodes communicating over of communication media. The distribution of synchronous time information occurs in a hierarchical manner with a grandmaster clock at the root of the hierarchy. The grandmaster provides a common and precise time reference for one or more directly-attached devices by periodically exchanging timing information. That is, all devices synchronize their clocks with the grandmaster clock. The devices can, in-turn, act as master devices for further hierarchical layers of other devices. Configure and view the global 802.1AS settings You can globally enable 802.1AS on the switch and configure local clock priorities. The 802.1AS feature calculates the time delay between devices on a link and maintains an accurate view of a network clock. To configure and view the global 802.1AS settings on the switch: 1. Launch a web browser. 2. In the address field of your web browser, enter the IP address of the switch. The login page displays. 3. Click the Main UI Login button. The main UI login page displays in a new tab. Configure Switching Information 309 Main User Manual
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