WINS Windows Internet Name Service What is WINS

WINS Windows Internet Name Service

What is WINS? 4 It does name resolution (? !) l l l l DNS resolves IP numbers and FQDN ARP resolves IP numbers and MAC addresses WINS resolves Net. BIOS names and IP numbers (see last class meeting) It is dynamic, as clients boot they provide the information H-node (default to Wins, then broadcast) not compatible with DNS protocol, but in NT can be linked to the NT DNS service reduces traffic and need for LMHOSTS

How does it work? WINS CLIENT Registration request Net. BIOS name, IP# WINS Query request NT Net. BIOS name CLIENT Query reply SERVER IP# Also: • renewal interval (default 4 days or 96 hours) • name refresh request • name release request (shutdown) WINS DATABASE Net. BIOS name, IP#, TTL

Server requirements 4 To work with DHCP l l its own fixed IP address select WINS in the DHCP server 4 To work with non WINS clients l l configure a WINS Proxy manually editing the registry turning Enable Proxy to 1. WINS Proxy is a WINS-enable computer that listens to broadcasts from non WINS clients and query the WINS server and replies.

Database replication 4 WINS servers l l communicate with each other share synchronous name information at least two: primary and backup each server is capable of handling: 1, 500 name registrations per minute l 4, 500 name queries per minute l l primary and backup should handle up to 10, 000 clients can replicate (update) one another create automatically backups

Push and Pull Partners WINS Server push and pull partner Central WINS Server Push: send update notices to partner Pull : requests updates from partner Note: only one WINS Proxy by subnet

4 Installation l l WINS: Install and Setup only in NT Server see the NT FAQ or Microsoft installation instructions. 4 Setup l l l see the NT FAQ WINS proxy setup instructions see the NT FAQ Static client setup instructions see the NT FAQ Setup to work with DHCP 4 For more information see Microsoft articles l l WINS and DNS Compact the WINS database