The situation of S series switch regarding to support the configuration of ip address

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S series switches (except S1700) Each three-layer interface can be configured with multiple IP addresses, one of which is the primary IP address, the rest is slave IP address, S series chassis switch each interface supports 255 slave address, S Series fixed switches Each interface supports eight slave addresses.

Other related questions:
Do S series switches support DHCP Option60
Only the S series switch excluding the S1700 used as the client supports the Option60 field in the DHCP Request messages.

IP address exclusion configuration on S series switch
For S series switches except S1700 switches, some IP addresses in an address pool may be used by other servers and hosts, configured for clients with special requirements, or reserved. These IP addresses need to be excluded from the address pool so that the DHCP server does not assign them to clients, preventing IP address conflicts. For example, you can configure IP addresses in the range of 10.10.10.11 to 10.10.10.20 that cannot be automatically assigned to clients from the address pool on an S series switch except an S1700 switch as follows: - For an interface address pool: [HUAWEI] dhcp enable [HUAWEI] interface vlanif 100 //Enter the view of the interface connected to DHCP clients. [HUAWEI-Vlanif100] ip address 10.10.10.10 24 [HUAWEI-Vlanif100] dhcp select interface [HUAWEI-Vlanif100] dhcp server excluded-ip-address 10.10.10.11 10.10.10.20 - For a global address pool: [HUAWEI] dhcp enable [HUAWEI] interface vlanif 100 //Enter the view of the interface connected to DHCP clients. [HUAWEI-Vlanif100] ip address 10.10.10.10 24 [HUAWEI-Vlanif100] dhcp select global [HUAWEI-Vlanif100] quit [HUAWEI] ip pool global1 [HUAWEI-ip-pool-global1] network 10.10.10.0 mask 24 [HUAWEI-ip-pool-global1] excluded-ip-address 10.10.10.11 10.10.10.20

Do S series switches support allocation of IP addresses based on secondary IP addresses
All switch models of S series switches excluding the S1700 allocate IP addresses based on the primary IP address regardless of whether the interface or global address pool is used. They do not support allocation of IP addresses based on secondary IP addresses. That is, users cannot obtain IP addresses on the same network segment as the secondary IP address.

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