BitCloud Lv3Posted 2024-Jan-17 13:25
  
The PPPoE session might be terminating and re-establishing for various reasons, causing a change in the assigned IP address. Check the logs or status information on your NSF for any indications of PPPoE session drops or re-establishments.
Natsu Dragneel Lv3Posted 2024-Jan-17 13:25
  
Ensure that your NSF is configured correctly for PPPoE. Check the configuration settings, including whether it's set to obtain a dynamic IP address from the ISP. If a static IP address is required, make sure the correct settings are in place.
noime Lv3Posted 2024-Jan-17 13:25
  
Some ISPs may have policies that cause IP address changes, especially if they detect irregular network activity or if they use address pooling techniques. Contact your ISP to discuss your IP address stability requirements.
Naomi Posted 2024-Jan-17 13:26
  
Check for any session timeout settings in your PPPoE configuration or on the ISP's side. If there are short timeouts configured, it may lead to frequent IP address changes.
NeTSec Lv3Posted 2024-Jan-17 13:27
  
Occasionally, ISPs perform maintenance or upgrades that can result in temporary changes to IP addresses. Check with your ISP for any ongoing maintenance activities.
Noah19 Lv3Posted 2024-Jan-17 13:27
  
Unstable network conditions, intermittent connectivity issues, or line noise could also contribute to PPPoE sessions dropping and reconnecting.
Prosi Lv3Posted 2024-Jan-17 13:48
  
If Sangfor device has no fixed public IP address, you can use WebAgent to discover IP address. 6. Go to System > SSL VPN Options > General > Client Options
Tammee Ong Lv1Posted 2024-Apr-09 11:37
  
First of all we would like to know if the subscribed PPPoE service is using a static IP or using dynamic IP. If you subscribe static IP but still encounters on each dial-up receiving a different IP, we suggest to perform packet capture on the interface using packet capture on our web console to further inspect the proposed IP from the ISP side.

Just in case, if you subscribe static IP but find that the proposed IP is different from the packet we suggest you check with the ISP side. During the check process, if you encounter any difficulties you are welcome to reach out to us via email at tech.support@sangfor.com for assistance.

Last but not least, if you subscribed dynamic IP PPPoE service it was normal to receive different IPs on each dial-up.

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