letlet Lv1Posted 2023-May-04 11:41
  
Some reason:
1. IP address conflict: It is possible that there is an IP address conflict on the network. Check the DHCP logs on the firewall for any IP address conflicts and resolve them.
2. Firewall configuration issue: The firewall may be misconfigured, causing the DHCP server to fail. Check the firewall's configuration settings and ensure that they are correct.
Cecille Lv1Posted 2023-May-04 13:34
  
There is a connectivity issue in your NGAF thats why it is not able to communicate with the DHCP server to obtain IP address
Ghostlying Lv2Posted 2023-May-04 17:15
  
There could be several possible reasons why the DHCP service on Sangfor NGAF is not giving out IP addresses within one hour after a machine restart. Here are some things you can check:

DHCP scope configuration: Make sure that the DHCP scope is configured correctly and has enough available IP addresses to lease out. Check the subnet mask, default gateway, and DNS settings for the scope as well.

DHCP server availability: Verify that the DHCP server is running and available on the network. Check that the server's IP address is correct and reachable from the network.

Network connectivity: Ensure that the client machine can communicate with the DHCP server over the network. Check the network connectivity and firewall settings on both the client and server machines.

Lease duration: Check the lease duration settings for the DHCP scope. If the lease duration is too long, it may take longer for the DHCP server to assign IP addresses to new devices. Try reducing the lease duration to see if it improves the situation.

DHCP server logs: Check the DHCP server logs for any errors or warnings that may indicate why the server is not assigning IP addresses.

If the above steps do not resolve the issue, you may need to contact Sangfor support for further assistance.
sumran Lv2Posted 2023-May-07 14:46
  
dhcp server is not proper configured one of the possible reasons
Taha Lv2Posted 2023-May-07 14:58
  
dhcp is  not working properly
rivsy Lv5Posted 2023-May-08 09:46
  
Check your DHCP if properly configure
Jhazz Lv3Posted 2023-May-08 09:58
  
Check the configuration of the DHCP server if the same

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