DHCP configuration is ineffective on an AR

The possible causes for ineffective DHCP configuration as follows:
1. DHCP is not enabled on the AR.
2. The address pool is configured incorrectly.3. The IP network segment are not specified on the interface of the DHCP server connected to the client, or the specified IP network segment and address pool are different.
4. If ACL resources are used up, the DHCP command that is run globally or on an interface does not take effect.

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