Sign In Sign-Up

Welcome!

Close

Would you like to make this site your homepage? It's fast and easy...

Yes, Please make this my home page!

No Thanks

  Don't show this to me again.

Close

WINS SERVER

1. WINS is a Microsoft NetBIOS name server (NBNS),WINS Eliminates the need for broadcasts to resolve computer names to IP addresses.
2. A WINS Server can be configured with both WINS and DNS to work in conjuction for NetBios and hostname resolution for Microsoft Clients only.
3. WINS is a Dynamic database, so name resolution is always current and does not have to be changed manually like a lmhost file.

WINS Resolution Process

Name Registration

• When a WINS client initializes, it registers its NetBIOS name by sending a name request to the configured WINS server. All services get registered as they are initialized in the WINS server database such as Workstation, Server and Messenger

  If the WINS server is available and the name is not registered by another machine, the WINS server returns a successful registration message.

  

Duplicate Name

If the NetBIOS name is already registered in the WINS database, the WINS server will send a challenge to the current registered owner. This request will be sent 3 times at 500ms intervals. If the current owner responds the WINS server will send a negative name resolution response to the WINS client attempting to register the name. If there is no response the registering client will receive a Name Registration response.

WINS Server Unavailable

A WINS client will make three attempts to register its name with the configured Primary WINS server. If the client fails after the third attempt, the client will attempt to register with the configured secondary WINS server, if that fails the client will use broadcasts to register it's name.

Name Renewal

• To continue using the same NetBIOS name, a client must renew its lease before it expires. If the client does not renew the lease, the WINS server makes it available to another WINS client

  A WINS client will first attempt to refresh its name registration request after 1/8 of the TTL is completed. If the client is successful subsequent name registration requests will occur when ½ the TTL is expired

Failure of Initial Name Renewal

If the client is unsuccessful with lease renewal on the initial attempt the client will try every 2 minutes until ½ TTL is remaining. At ½ of TTL the client will revert to the secondary WINS server if configured in 1/8 TTL intervals. At completion of TTL lease, the WINS client will revert back to the primary WINS server and start the process all over again.

Name Release

Name Query and Response

Name Resolution

On a Windows NT Network, A host will check different options to perform name resolution

1. Local Cache
2. WINS Server
3. Netbios Name Broadcast
4. LMHOSTS File

WINS Clients

WINS Database

WINS Replication