Transcript WINS Windows Internet Name Service

WINS
Windows Internet Name Service
What is WINS?
It does name resolution (?!)
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DNS resolves IP numbers and FQDN
ARP resolves IP numbers and MAC
addresses
WINS resolves NetBIOS 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
Registration request
NetBIOS name, IP#
CLIENT
WINS
SERVER
Query request
NT
NetBIOS name
CLIENT
Query reply
IP#
Also:
• renewal interval (default 4 days or 96 hours)
• name refresh request
• name release request (shutdown)
WINS
DATABASE
NetBIOS name, IP#, TTL
Server requirements
To work with DHCP
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its own fixed IP address
select WINS in the DHCP server
To work with non WINS clients
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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
WINS servers
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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
 4,500 name queries per minute
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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
WINS Server
push and pull
partner
WINS Server
push and pull
partner
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
WINS: Install and Setup
Installation
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only in NT Server
see the NT FAQ or Microsoft installation
instructions.
Setup
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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
For more information see Microsoft
articles