Huawei Quidway S3900 Series Operation Manual page 617

Operation Manual - DHCP
Quidway S3900 Series Ethernet Switches-Release 1510
address pool belong, is divided into two sub-network segment: 10.1.1.0/25 and
10.1.1.128/25. The switch operating as the DHCP server hosts two VLANs, whose
interface IP addresses are 10.1.1.1/25 and 10.1.1.129/25 respectively.
The DHCP settings of the 10.1.1.0/25 network segment are as follows:
Lease time: 10 days plus 12 hours
Domain name: aabbcc.com
DNS server: 10.1.1.2
WINS server: none
Gateway: 10.1.1.126
The DHCP settings of the 10.1.1.128/25 network segment are as follows:
Lease time: 5 days
Domain name: aabbcc.com
DNS server: 10.1.1.2
WINS server: 10.1.1.4
Gateway: 10.1.1.254
Note:
If you use the inheriting relation of parent and child address pools, make sure that the
number of the assigned IP addresses does not exceed the number of the IP
addresses in the child address pool; otherwise extra IP addresses will be obtained
from the parent address pool. The attributes (for example, gateway) also are based on
the configuration of the parent address pool.
For example, in the network to which VLAN interface 1 is connected, if multiple clients
apply for IP addresses, the child address pool 10.1.1.0/25 assigns IP addresses first.
When the IP addresses in the child address pool have been assigned, if other clients
need IP addresses, the IP addresses will be assigned from the parent address pool
10.1.1.0/24 and the attributes will be based on the configuration of the parent address
pool.
For this example, the number of clients applying for IP addresses from VLAN interface
1 is recommended to be less than or equal to 122 and the number of clients applying
for IP addresses from VLAN interface 2 is recommended to be less than or equal to
124.
Huawei Technologies Proprietary
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Chapter 2 DHCP Server Configuration