After the N8000 DNS server IP address is changed and the new DNS IP address is synchronized to the Windows 7, why may the DNS service be unavailable?

21

This is because the Windows 7 client may cache the IP address of the original DNS server, which disables connection setup. To resolve this problem, you need to clear the cache by running ipconfig/flushdns in the cmd window.

Other related questions:
Delete DNS parameters on S series switch
If an S series switch (except an S1700 switch) delivers the DNS server IP address to clients through DHCP, the DNS server IP address can be deleted using commands. For example, if the DNS server IP address 10.1.1.1/24 has been configured on a switch, you can delete it as follows: - If the original configuration is based on a global address pool: [Huawei] ip pool pool1 [Huawei-ip-pool-pool1] undo dns-list 10.1.1.1 //Delete the DNS server IP address. - If the original configuration is based on an interface address pool: [Huawei] interface vlanif 10 //Enter the view of the DHCP server interface connected to clients. [Huawei-Vlanif10] undo dhcp server dns-list 10.1.1.1 //Delete the DNS server IP address. - If the original configuration is based on a DHCP Option template: [Huawei] dhcp option template temp1 [Huawei-dhcp-option-template-temp1] undo dns-list 10.1.1.1 //Delete the DNS server IP address. Additionally, clients need to release their original IP addresses and apply for new IP addresses from the DHCP server.

Concept of an internal DNS server IP address of OceanStor 9000
Used to provide the domain name resolution service in a subnet. The DNS service IP address of InfoEqualizer is the internal DNS server IP address of default.

How are DNS and NetBIOS server addresses configured on an AR
The AR can automatically assign the DNS server IP address allocated by a carrier, DNS domain name suffix, and NetBIOS server address to a DHCP client. Perform the following configurations: - Interface-based [Huawei] interface gigabitethernet 1/0/0 [Huawei-GigabitEthernet1/0/0] dhcp select interface [Huawei-GigabitEthernet1/0/0] dhcp server import all //Enable the interface to automatically obtain the DNS and NetBIOS server addresses. - Global mode [Huawei] ip pool global [Huawei-ip-pool-global] import all //Enable the AR to automatically obtain the DNS and NetBIOS server addresses in the global address pool.

Whether the USG6600 can serve as the DNS to advertise IP addresses to a public network
The USG6600 cannot serve as the DNS to advertise IP addresses.

If you have more questions, you can seek help from following ways:
To iKnow To Live Chat
Scroll to top