Solution to a failure in configuring static DHCP binding on S series switches

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For S series switches excluding the S1700, if the switch displays the message “Error:The static-MAC is exist in this IP-pool�?or the “Error:The IP address’s status is error�?during static DHCP binding configuration, static DHCP binding fails. This is because the bound IP address has been assigned to a client and there is an internal mapping entry on the switch.
You can run the reset ip pool { interface pool-name | name ip-pool-name } { start-ip-address [ end-ip-address ] | all | conflict | expired | used } command in the user view to reclaim the IP address in the address pool and then statically bind it.

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Static DHCP binding on S series switch
In static DHCP binding mode, fixed IP addresses can be assigned to DHCP clients. Versions and models of S series switches except S1700 switches that support this function are as follows: - All switch models in V200R005 and later versions, except the S2720 in V200R006C10 - All switch models except the S5700LI, S5700S-LI, and S2750 in versions earlier than V200R005

Method to configure static DHCP binding on S series switches
Static DHCP binding allows the switch to allocate fixed IP addresses to user terminals with fixed MAC addresses. Assume that an S series switch excluding the S1700 needs to allocate the fixed IP address of 10.10.10.10 to the client with the MAC address of dcd2-fc96-e4c0. The configuration method is as follows: - Based on the global address pool: [HUAWEI] ip pool 1 //Address segments have been configured in the address pool. [HUAWEI-ip-pool-1] static-bind ip-address 10.10.10.10 mac-address dcd2-fc96-e4c0 - Based on the interface address pool: [HUAWEI] interface vlanif 10 //An IP address has been assigned to the interface. [HUAWEI-Vlanif10] dhcp server static-bind ip-address 10.10.10.10 mac-address dcd2-fc96-e4c0 Note: The configured IP address cannot be the IP address that has been assigned. If the system displays a message indicating that the IP address has been assigned, run the reset ip pool { interface pool-name | name ip-pool-name } { start-ip-address [ end-ip-address ] | all | conflict | expired | used } command in the user view to manually reclaim IP addresses in the address pool.

Static DHCP binding error on S series switch
For S series switches (except S1700 switches), if the message "Error: The static-MAC is exist in this IP-pool" or "Error: The IP address's status is error" is displayed when you configure a static DHCP binding entry, the configuration will fail. The failure occurs because the IP address to bind has been assigned to a client, and an internal mapping entry has already been created on the switch. In this case, you can run the reset ip pool { interface pool-name | name ip-pool-name } { start-ip-address [ end-ip-address ] | all | conflict | expired | used } command in the user view to manually reclaim the IP address in the address pool, and configure a new static binding entry.

Support of static DHCP binding by S series switches
You can assign fixed IP addresses to clients using static DHCP binding. The support by S series switches excluding the S1700 is as follows: - V200R005 and later versions: All switch models support this function excluding the S2720 in V200R006C10. - Earlier versions of V200R005: All switch models support this function excluding the S5700LI/S5700S-LI/S2750.

Static DHCP binding configuration on S series switch
In static DHCP binding mode, fixed IP addresses can be assigned to DHCP clients with specific MAC addresses. For example, you can assign fixed IP address 10.10.10.10 to a client with MAC address dcd2-fc96-e4c0 on an S series switch except an S1700 switch: - For a global address pool: [HUAWEI] ip pool 1 //Enter the view of an IP address pool. [HUAWEI-ip-pool-1] static-bind ip-address 10.10.10.10 mac-address dcd2-fc96-e4c0 - For an interface address pool: [HUAWEI] interface vlanif 10 //Enter the view of the interface for which an IP address has been configured. [HUAWEI-Vlanif10] dhcp server static-bind ip-address 10.10.10.10 mac-address dcd2-fc96-e4c0 Note: The configured IP address cannot be the same as the assigned one. If the configured IP address has been assigned, run the reset ip pool { interface pool-name | name ip-pool-name } { start-ip-address [ end-ip-address ] | all | conflict | expired | used } command in the user view to manually reclaim the IP address in an address pool.

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