When we use Huawei NE series routers, we sometimes encounter problems. How can these problems be solved? We provide the Troubleshooting Guide to help you.
If you encounter the 1588 ACR Negotiation Fails, perform the following steps:
1. Identify the problem based on the Nego error field in the display ptp-adaptive all command output.
§ Prompt information: Nego error (reason: delete link)
Common cause: Unicast negotiation is disabled on the client.
Troubleshooting procedure: Run the display ptp-adaptive all command on the client to check the "Sync mode" field in the command output.
o If the Sync mode field is displayed as none, unicast negotiation is disabled. Run the ptp-adaptive acr unicast-negotiate enable command in the system view on the client to enable unicast negotiation.
o If the Sync mode field is not displayed as none, unicast negotiation has been enabled. Go to Step 2.
§ Prompt information: Nego error (reason: route unreachable)
Common cause: The client and server are unroutable.
Troubleshooting procedure: Run the ping command to check the connectivity between the client and server.
o If the ping operation fails, see The Ping Operation Fails in the Troubleshooting - IP Service.
o If the ping operation is successful, run the display ip routing-table command on the client and server to check whether the routing table on each end is correct. If the routing table on the client or server is incorrect, see the Troubleshooting - IP Routing.
§ Prompt information: Nego error (reason: announce grant timeout)
Common cause: 1588 ACR or unicast negotiation is disabled on the server.
Troubleshooting procedure: Run the display ptp-adaptive all command on the server to check the Ptp adaptive state and Sync mode fields in the command output.
o If the Ptp adaptive state field is displayed as Disable, 1588 ACR is disabled. Run the ptp-adaptive enable command in the system view on the server to enable 1588 ACR.
o If the Sync mode field is displayed as none, unicast negotiation is disabled. Run the ptp-adaptive acr unicast-negotiate enable command in the system view on the server to enable unicast negotiation.
o If both 1588 ACR and unicast negotiation have been enabled on the server, go to Step 2.
§ Prompt information: Nego error (reason: announce timeout)
Common causes:
o 1588 ACR or unicast negotiation enabled on the server becomes Disabled.
o The working mode of the 1588 ACR-capable board on the server is incorrect.
o The physical link becomes faulty or the route between the server and client is deleted after the link has been used for negotiation.
Troubleshooting procedure:
c. Run the display ptp-adaptive all command on the server to check the Ptp adaptive state and Sync mode fields in the command output.
If the Ptp adaptive state field is displayed as Disable, 1588 ACR is disabled. Run the ptp-adaptive enable command in the system view on the server to enable 1588 ACR.
If the Sync mode field is displayed as none, unicast negotiation is disabled. Run the ptp-adaptive acr unicast-negotiate enable command in the system view on the server to enable unicast negotiation.
If both 1588 ACR and unicast negotiation have been enabled on the server, go to the next step.
d. Run the ping command to check the connectivity between the client and server.
If the ping operation fails, see The Ping Operation Fails in the Troubleshooting - IP Service.
If the ping operation is successful, run the display ip routing-table command on the client and server to check whether the routing table is correct. If the routing table on the client or server is incorrect, see the Troubleshooting - IP Routing.
e. If the connectivity between the client and server is normal, go to Step 2.
2. Collect the following information and contact Huawei technical support personnel.
§ Results of the troubleshooting procedure
§ Configuration files, log files, and alarm files of the devices
For more troubleshooting cases, see: NE40E Troubleshooting Guide V4.0 (VRPv8)
https://support.huawei.com/enterprise/en/doc/EDOC1000177634
