Device restart after the user-bind static command is executed

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For S series switches excluding the S1700, in V100R006, running the user-bind static command on the S2700-SI or S3700-SI causes device restart.
This issue is fixed in later versions. You can upgrade the switch to V200R001 or later version or install patch V100R006SPH022. To download the patch, click S2700 Downloads.

Other related questions:
FAQ: The ip source check user-bind enable command executed in a VLAN view causes service interruption
[Problem Description] 1. Symptom The ip source check user-bind enable command executed in a VLAN view causes service interruption. 2. Networking Terminal �?S2700 �?S5700 (Gateway) 3. Configuration # dhcp enable dhcp snooping enable user-bind static ip-address 192.168.34.10 mac-address 80fa-0367-db33 # vlan 34 dhcp snooping enable ip source check user-bind enable # interface Ethernet0/0/2 port link-type access port default vlan 34 # interface GigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 2 to 4094 [Alarm] None. [Troubleshooting] Delete the ip source check user-bind enable command from the VLAN view and then run this command in an interface view to restore the services. [Root Cause] If a command is executed in the VLAN view, the command takes effect for all packets received by all interfaces in the VLAN, including the uplink interface GigabitEthernet0/0/1. Source IP addresses of Layer 3 packets received by the uplink interface are different, and the source MAC addresses are the MAC address of the S5700 switch. The packets that do not match any binding entry are discarded, causing service interruption. [Summary and Suggestions] 1. Using the ip source check user-bind enable command or other commands related to IPSG in the VLAN view causes service interruption. 2. Before using the commands in the VLAN view, run the user-bind static mac-address command to bind the MAC address and IP address of the Layer 3 interface of the uplink gateway.

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.

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