Network clock source quality source (synchronous Ethernet interfaces) To use the network-clock synchronization ssm option command, ensure that the router configuration does not include the following: The following restrictions apply when configuring synchronous Ethernet The Cisco ASR 920 Series Router do not support a mix of IPv4 and Ethernet clock ports when acting as a transparent clock or G.8265.1 telecom profiles are not supported with PTP over Ethernet. Router to use the full PTP functionality.Įnd-to-end Transparent Clock is not supported for PTP over Ethernet. If you install the IEEE 1588-2008 BC/MC license, you must reload the Metro Aggregation Service + IEEE 1588-2008 BC/MC PTP Functions Supported by Different LicensesĪll PTP functionality including boundary and server clock The table below summarizes the PTP functionalities that are available, PTP functionality is restricted by license type. When PTP is configured on Cisco ASR-920-24SZ-IM Router, changing the configuration mode from LAN to WAN or WAN to LAN is In order to configure time of day input, you must configure both an input 10 Mhz and an input 1 PPS source. PTP redundancy is supported only on unicast negotiation mode you can configure up to three Multiple ToD clock sources are not supported. Supports only BITS port and not 10 M input.įixed Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Routers cannot take any external input and To provide both ToD and 1 PPS signal on the same port you must use a special Y-cable. Time of Day (ToD) and 1 Pulse per Second (1PPS) input is not supported when the router is in boundary clock mode. Using Synchronous Ethernet, and phase using PTP. However, you can use hybrid clocking to allow the router to obtain frequency Conversely, PTP clock sources are not supported with synchronousĮthernet except when configured as hybrid clock. Synchronous Ethernet clock sources are not supported with PTP. Out-of-band clocking and the recovered-clock command are not supported. Precision Time Protocol (PTP) is supported only on loopback interfaces, layer 2 interfaces, and BDI interfaces. Module using the network-clock input-source command. You can configure only a single clocking input source within each group of eight ports (0–7 and 8–15) on the T1/E1 interface The following clocking and timing restrictions apply to the Cisco ASRĭo not configure GNSS in high accuracy operating mode, when Cisco ASR-920-12SZ-A or CiscoĪSR-920-12SZ-D router is configured as Precision Time Protocol (PTP) server. This chapter explains how to configure timing ports on the Cisco ASR Configuring Synchronous Ethernet ESMC and SSM.Synchronizing the System Time to a Time-of-Day Source (Client Mode).Synchronizing the System Time to a Time-of-Day Source (Server Mode).Synchronizing the System Time to a Time-of-Day Source.Configuring PTP Redundancy in Boundary Clock Mode.Configuring PTP Redundancy in Client Clock Mode.Understanding Synchronous Ethernet ESMC and SSM.Synchronizing the System Clock to Time of Day.Configuration Example: Hybrid BMCA on Boundary Clock.Configuration Example: Hybrid BMCA on Ordinary Clock.PTP Redundancy Using Hop-By-Hop Topology Design.
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