Qtech QSW-8200-28T-AC-DC [17/20] Ip dns server

User Manual

Chapter 3. Commands for DNSv4/v6 17

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 Default: Disabled.

 Usage Guide: This command is used to configure or delete suffix of domain name,

when the entered domain name is not integrity (such as sina), the switch can add suffix

automatically, after that, address mapping can run, the domain name suffix can be

configured no more than 6. The first configured domain name suffix will be added first.

 Example: To configure domain name suffix of com.

 Switch(config)# ip domain-list com

3.12 ip dns server

 Command: ip dns server

 no ip dns server

 Function: Enable/disable DNS SERVER function.

 Parameter: None.

 Command Mode: Global Mode.

 Default: Disabled by default.

 Usage Guide: After the DNS SERVER function is enabled, the switch will be able to

receive and handle DNS Requests from the clients by looking up locally or forward the

request to the real DNS server.

 Example: Configure to enable the dns server function of the switch.

 Switch(config)#ip dns server

3.13 ip dns server queue maximum

 Command: ip dns server queue maximum <1-5000>

 no ip dns server queue maximum

 Function: Configure the max number of client information in the switch queue.

 Parameter: <1-5000> the value can be 1－5000.

 Command Mode: Global Mode.

 Default: The default client number is 3000.

 Usage Guide: When receiving a DNS Request from a client, the switch will cache the

client’s information. But the number of client information in the queue should not

exceed the configured maximum number; otherwise the client’s request won’t be

handled.

 Example: Set the max number of client information in the switch queue as 2000.

 Switch(config)#ip dns server queue maximum 2000

3.14 ip dns server queue timeout

 Command: ip dns server queue timeout <1-100>

 no ip dns server queue timeout

 Function: Configure the timeout value of caching the client information on the switch.

 Parameters: <1-100> the value can be1－100s.

 Command Mode: Global Mode.

 Default: The default timeout value is 5s.