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


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


NE20E-S2 V800R010C10SPC500 Configuration Guide - System Management 01

This is NE20E-S2 V800R010C10SPC500 Configuration Guide - 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).
Licensing Requirements and Limitations for 1588 ATR--S2F

Licensing Requirements and Limitations for 1588 ATR--S2F

Licensing Requirements


License Control Item


Minimum Version Requirement


NE20E-S2 Series 1588v2 ATR Function License

Controllable feature:

This license controls 1588v2 ATR. This feature requires that the maximum number of switch hops does not exceed 3 and the number of microwave device hops does not exceed 4. A device requires one such license to support 1588v2 ATR.


Restrictions and Guidelines




For the routers that support the 1588 ATR server function and comply with the G.8275.2 standard, the network deployment has the following limitations:
  • The uplink and downlink between the server and client are consistent and the path between the server and client must be unique.
  • The intermediate network includes up to 3 hops of microwave devices (4 devices) or three Layer 2 switches. Traversing routers is not supported.
  • PTP packets are exchanged between the server and client. The PTP packets can be Layer 3 IP packets or one-level VLAN labeled packet. The packets cannot carry two-level VLAN labels or MPLS labels.
  • The outbound interface on the server for sending PTP packets must support the 1588 TC mode.
  • Measurement and compensation for static asymmetry of upstream and downstream delay are required for 1588 packets on the primary and secondary devices.
  • When LAG exists on the intermediate network, the fibers of all LAG member links must have the same length. That is, the asymmetry of delay is fixed regardless of changes.
  • PTP packets have the highest priority. The intermediate network identifies the PTP packet priority for scheduling.
  • None.
  • Check the number of hops on the intermediate network and confirm whether such network can be deployed.
  • None.
  • Use TC-capable subcards.
  • None.
  • None.
  • Use the ptp-adaptive dscp dscp-value command to configure the priority of ATR packets. The default priority value is 56, which indicates the highest priority.

The requirement for time synchronization performance cannot be met.

Updated: 2019-01-02

Document ID: EDOC1100055400

Views: 20184

Downloads: 30

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