Module 7: Planning and Optimizing WINS

Overview Planning a WINS Solution Identifying WINS Optimization Requirements Optimizing WINS Traffic

Lesson: Planning a WINS Solution Options for NetBIOS Name Resolution Determining the Required Number of WINS Servers Identifying WINS Replication Requirements Planning WINS Fault-Tolerance Requirements Best Practices for Planning a WINS Solution Guidelines for Planning a WINS Solution

Options for NetBIOS Name Resolution WINS Suitable for organizations of all sizes Reduces broadcast traffic Does not require static IP addresses Suitable for organizations of all sizes Reduces broadcast traffic Does not require static IP addresses LMHOSTS Suitable for small environments Reduces broadcast traffic Requires static IP addresses Suitable for small environments Reduces broadcast traffic Requires static IP addresses

Determining the Required Number of WINS Servers Subnet 1 WINS-A WINS-B Subnet 2

Identifying WINS Replication Requirements WINS Server A Subnet 2 Subnet 1 WINS Server B WINS Replication Host B Host A Replication requirements More than one WINS server The need for a highly available solution More than one WINS server The need for a highly available solution

Planning WINS Fault-Tolerance Requirements Plan for fault tolerance Determine the maximum allowable downtime of the WINS server Use a secondary WINS server for redundancy Determine the maximum allowable downtime of the WINS server Use a secondary WINS server for redundancy Configure clients for fault tolerance Clients should point to the local WINS server Clients should point to the secondary WINS hub for redundancy Clients should point to the local WINS server Clients should point to the secondary WINS hub for redundancy

Best Practices for Planning a WINS Solution WINS best practices Select push/pull replication Use a hub-and-spoke design model Use default settings for WINS servers Avoid static WINS entries Schedule consistency checking for off-peak hours Select push/pull replication Use a hub-and-spoke design model Use default settings for WINS servers Avoid static WINS entries Schedule consistency checking for off-peak hours

Guidelines for Planning a WINS Solution Identify the need for WINS Identify the required number of WINS servers Determine replication needs Plan for fault tolerance

Practice: Planning WINS In this practice, you will plan a WINS solution based on the provided scenario

Lesson: Identifying WINS Optimization Requirements Identifying WINS Traffic Identifying WINS Server Optimization Needs Identifying WINS Replication Optimization Needs

Identifying WINS Traffic Query Release Registration Renewal

Identifying WINS Server Optimization Needs Capture databy using these counters:  Queries/sec  Total Number of Registrations/sec  Total Number of Renewals/sec  Unique Registrations/sec  Group Registrations/sec Document the baseline Review your network diagram

Identifying WINS Replication Optimization Needs Replication parameterNetwork implication Push partner counter’s default is 0 Causes increased traffic over congested WAN links; you might want to raise the default value Pull partner is set to 30 minutes Causes delay in propagation of the database; you might want to lower the default value

Practice: Identifying WINS Optimization Requirements In this paper-based practice, you will identify WINS performance areas that are prime candidates for optimization

Lesson: Optimizing WINS Traffic Determining Requirements for Client Renew Interval Modification How to Improve WINS Performance Optimizing Replication Between WINS Servers

Determining Requirements for Client Renew Interval Modification Renew interval actionResults Increasing the renew interval Causes client names to be renewed with WINS less often Reduces client registration activity and performance loads on the WINS server Decreasing the renew interval Causes client names to be renewed with WINS more often Increases client registration activity and performance loads on the WINS server

How to Improve WINS Performance Optimize WINS when server is overloaded Optimization optionAction Improving the performance of a WINS server Adding multiple CPUs Providing ample memory to support the service Providing high-performance disks Using a high-bandwidth network card Using burst-mode name registration if periods of high activity cause server saturation Improving the performance of the WINS service Adding multiple WINS servers Placing servers on either side of restricted- bandwidth WAN links Distributing clients across multiple servers to balance the client load

Optimizing Replication Between WINS Servers Santiago Subnet 1 Subnet 2 Washington, D.C. WAN Link Subnet 3 WINS Server WINS Servers WINS Clients WINS Client

Practice: Optimizing WINS Traffic In this practice, you will optimize WINS traffic based on the provided scenario

Lab A: Planning and Optimizing WINS Exercise 1: Planning WINS for a LAN/WAN Environment Exercise 2: Optimizing a WINS Infrastructure