qr code generator in asp.net c# Monitoring and Troubleshooting DHCP in VS .NET

Paint QR Code in VS .NET Monitoring and Troubleshooting DHCP

8
QR Code ISO/IEC18004 Creator In Visual Studio .NET
Using Barcode maker for Visual Studio .NET Control to generate, create QR Code image in .NET applications.
www.OnBarcode.com
Recognize QR Code In .NET
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Monitoring and Troubleshooting DHCP
Bar Code Maker In VS .NET
Using Barcode generator for .NET Control to generate, create bar code image in .NET applications.
www.OnBarcode.com
Bar Code Decoder In VS .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Figure 8-6 Verifying address type
Quick Response Code Encoder In C#.NET
Using Barcode encoder for .NET Control to generate, create Denso QR Bar Code image in .NET applications.
www.OnBarcode.com
Painting QR In VS .NET
Using Barcode generator for ASP.NET Control to generate, create Denso QR Bar Code image in ASP.NET applications.
www.OnBarcode.com
If the client has been assigned by DHCP an address that is compatible with the rest of the network, and no warning messages have appeared about address conflicts, you can assume that the network problem does not result from an addressing error on the local client.
Generating QR Code In Visual Basic .NET
Using Barcode creation for .NET Control to generate, create QR-Code image in Visual Studio .NET applications.
www.OnBarcode.com
Generating Bar Code In .NET
Using Barcode printer for .NET framework Control to generate, create bar code image in Visual Studio .NET applications.
www.OnBarcode.com
Address Conflicts
Creating EAN13 In Visual Studio .NET
Using Barcode generator for .NET framework Control to generate, create EAN-13 image in VS .NET applications.
www.OnBarcode.com
Barcode Maker In .NET Framework
Using Barcode generation for .NET framework Control to generate, create barcode image in VS .NET applications.
www.OnBarcode.com
If a client computer has been assigned an address in use by another computer on the network, a warning message informing you of this conflict appears in the system tray. You can also learn about such address conflicts in the System log, which you can access through Event Viewer. Figure 8-7 shows this type of warning message.
Encoding GTIN - 128 In .NET Framework
Using Barcode drawer for .NET Control to generate, create EAN128 image in .NET applications.
www.OnBarcode.com
Generate UPC-E Supplement 5 In Visual Studio .NET
Using Barcode generation for .NET Control to generate, create UPC-E Supplement 5 image in Visual Studio .NET applications.
www.OnBarcode.com
Lesson 3
Making QR Code 2d Barcode In VB.NET
Using Barcode generation for .NET framework Control to generate, create Denso QR Bar Code image in .NET applications.
www.OnBarcode.com
Code 128 Code Set B Drawer In Visual C#
Using Barcode generator for VS .NET Control to generate, create Code 128 Code Set C image in .NET framework applications.
www.OnBarcode.com
Troubleshooting DHCP
Painting Barcode In Java
Using Barcode creator for Android Control to generate, create barcode image in Android applications.
www.OnBarcode.com
European Article Number 13 Creator In VB.NET
Using Barcode generation for Visual Studio .NET Control to generate, create EAN 13 image in Visual Studio .NET applications.
www.OnBarcode.com
8-29
Code128 Encoder In VB.NET
Using Barcode drawer for VS .NET Control to generate, create Code 128 Code Set B image in .NET framework applications.
www.OnBarcode.com
Code 128A Decoder In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Figure 8-7
Bar Code Scanner In .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Recognize QR Code In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Address conflict warning message in Event Viewer
When you receive a warning message about an address conflict, and when you can verify that the client has received its IP configuration from a DHCP server, this conflict can be a sign of competing DHCP servers or of a sudden DHCP scope redeployment. To check for competing DHCP servers, you can use the Dhcploc.exe utility (included in Windows Support Tools) to locate rogue DHCP servers on the network. After remov ing rogue servers as needed, verify that no two remaining DHCP servers can issue address leases from the same address range. To recover gracefully from a scope redeployment, first increase the conflict detection attempts on the server and then renew client leases. To renew a client lease, use either the Ipconfig /renew command or the Repair button in the relevant connection s status dialog box. If you need to renew many leases, you can use the Shutdown /i command to restart multiple remote computers.
Note
The Shutdown /i command opens a graphical tool that allows you to select a number of remote computers to shut down.
8-30
8
Monitoring and Troubleshooting DHCP
Using the Repair Button
Clicking the Repair button on the Support tab of a connection s status dialog box (shown in Figure 8-6) performs the following six functions in sequence: 1. Broadcast a DHCP Request message to renew the currently assigned client IP address. (This step is performed only if the client is a DHCP client.) This function is similar to the one provided by the Ipconfig /renew command, but in the case of the Ipconfig /renew command, the request to renew the cur rently active IP address is sent by unicast, not broadcast, to the DHCP server that assigned the address. If no address (0.0.0.0) is currently assigned to the client, the first step performed by the Repair button (as with the Ipconfig /renew command) is to broadcast a DHCP Discover packet to the network. 2. Flush the ARP cache. This step is the functional equivalent of entering arp d * at a command prompt. 3. Flush the NetBIOS cache. This step is the functional equivalent of entering the nbtstat R command at a command prompt. 4. Flush the DNS cache. This step is the functional equivalent of entering the ipconfig /flushdns command at a command prompt. 5. Reregister the client s NetBIOS name and IP address with a WINS server. This step is the functional equivalent of entering the nbtstat RR command at a command prompt. 6. Reregister the client s computer name and IP address with DNS. This step is the functional equivalent of entering the ipconfig /registerdns command at a command prompt.
Exam Tip For the exam, know the operations performed by the Repair button and their command-line equivalents.
Failure to Obtain a DHCP Address
When the Ipconfig /all command output or the connection status dialog box reveals that the client address is assigned by APIPA or by an alternate configuration, you can first attempt to refresh the IP configuration by using either the Ipconfig /renew com mand or the Repair button in the connection s status dialog box. If the problem persists, this situation can signal either the absence of a DHCP server or relay agent deployed within broadcast range, a break in the physical connection, or an error at the DHCP server or scope. If you can verify that a DHCP server or relay agent is deployed within broadcast range, verify next that the physical connection to the
Copyright © OnBarcode.com . All rights reserved.