No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

ME60 V800R010C10SPC500 Feature Description - System Management 01

This is ME60 V800R010C10SPC500 Feature Description - System Management
Rate and give feedback :
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Networking Modes of Clock Physical Layer Synchronization

Networking Modes of Clock Physical Layer Synchronization

Transmitting Clock Signals Through Clock Interfaces

A clock interface on a clock board outputs its clock signals to other network elements.

The main processing unit (MPU) of the ME60 provides three building integrated timing supply (BITS) interfaces. One BITS interface is used to input and output clock information. The other BITS interface is used to input and output time information.

As shown in Figure 12-4, ME device A traces the BITS clock. The clock output interface on ME device A is connected to the clock input interface on ME device B using a clock cable. ME devices B and C are also connected using a clock cable, and ME device C traces ME device B's clock. The clocks of the three ME devices synchronize with the BITS clock.

Figure 12-4 Transmitting clock signals through clock interfaces

Transmitting Clock Signals Through Physical Links

Transmitting clock signals through physical links is a commonly used method for synchronizing clocks. The information about the master clock is stored in physical link signals. Other network elements extract the clock information from the physical link signals through the clock board and trace and lock the clock information.

Ethernet links can be used to implement clock synchronization without the need of constructing a special clock synchronization network.

The ME60 can transmit or receive clock signals through an Ethernet interface.

As shown in Figure 12-5, ME device A traces the BITS clock. ME devices A and B are connected through an Ethernet link. ME devices B and C are also connected through an Ethernet link, and ME device C traces ME device B's clock. The clocks of the three ME devices synchronize with the BITS clock.

Figure 12-5 Transmitting clock signals through Ethernet links

Owing to the long transmission distance of optical fibers, synchronizing clock signals through synchronous Ethernet links has become the most common networking mode for clock synchronization.

Translation
Download
Updated: 2019-01-04

Document ID: EDOC1100059466

Views: 10287

Downloads: 6

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next