Troubleshooting Dhcp IP Addresses | Allied Telesis 2.6.1 manual

Maintenance and Troubleshooting

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The “IP Packet Forwarding” field in the output should be set to “Enabled”. Refer to the documentation for the host TCP/IP software for more information about configuring a gateway.

The host’s TCP/IP software should be configured to use the Head Office switch as its gateway. Refer to the documentation for the host TCP/IP software for more information about configuring a gateway.

3.Contact your authorised distributor or reseller for assistance

If problems persist, contact your authorised distributor or reseller for assistance.

Troubleshooting DHCP IP Addresses

Your switch is acting as a DHCP client

If your switch is acting as a DHCP client the switch should receive its IP address dynamically. If your switch is not receiving an IP address, check that the domain name and host name are correct.

Your switch is acting as a DHCP server

If your switch is not assigning IP addresses to a host, or hosts, on the subnet perform this procedure:

1.Reboot the host machine, to force it to re-request IP settings.

2.Check the host’s TCP/IP settings.

In Microsoft® Windows™ 95/98, click Settings → Control Panel → Network. Select TCP/IP and click Properties. Click Obtain an IP address automatically.

In Microsoft® Windows™ 2000, click Settings → Control Panel → Network and Dial-up Connections → Local Area Connection → Properties. Select Internet connection (TCP/IP) and click Properties. Click Obtain an IP address automatically.

3.Check that the DHCP server has a large enough range of addresses. To assign a range, enter the command:

CREATE DHCP RANGE

Software Release 2.6.1 C613-02039-00 REV A

Image 115

Allied Telesis 2.6.1 manual Troubleshooting Dhcp IP Addresses, Your switch is acting as a Dhcp client

Contents

AT-8800 Series Switch Page Contents AT-8800 Series Switch User Guide Operating the switch Maintenance and Troubleshooting Page Why Read this User Guide? Introducing the AT-8800 Series SwitchChapter AT-8800 Series Switch Documentation Set Where To Find More Information Online Technical Support Features of the AT-8800 Series SwitchIntroduction Software Features Management Features Special Feature Licences Do if You Clear Flash Memory Completely on This Chapter Getting Started with the Command Line Interface CLI Terminal Communication Parameters Connecting a Terminal or PCParameters for terminal communication Value Assigning an IP Address Enter the password at the password promptGetting Started with the Command Line Interface CLI Logging To change the IP address for an interface, enter the command Setting Routes Choosing a Password Changing a PasswordTo add a static route, enter the command Not available Using the Commands To display the current help file, enter the command Getting Command Line HelpAliases Setting System Parameters Enabling Special Feature Licences Getting Started with the Graphical User Interface GUI Getting Started with the Graphical User Interface GUI Supported browsers and operating systems What is the GUI?Accessing the Switch via the GUI Browser and PC Setup Http Proxy Servers See Option 2 Installing the Switch into the LAN on Establishing a Connection to the SwitchSee Option 3 Connecting to an Installed Switch on See Option 1 Configuring the Switch before Installation on Use this procedure if Option 1 Configuring the Switch before InstallationSee Http Proxy Servers on page 23 for more information Plug the switch into the LAN Option 2 Installing the Switch into the LANDefault username is manager At the login prompt, enter the user name and password Assign the vlan1 interface an IP address See Secure Access on page 29 for more information If necessary, bypass the Http proxy server Option 3 Connecting to an Installed SwitchFind out the IP address of the switch’s interface Select a PC Create a Security Officer user account Secure Access To enable system security, use the command Then enter the password for CIPHER, sbr4y3To create an RSA key pair, use the command System Status System Status Quality of Service and traffic filters Using the GUI Navigation and FeaturesConfiguration Menu Using Configuration Pages An example of a configuration page with a selection table Editable Fields Monitoring Menu Management Menu Changing the Password Diagnostics MenuContext Sensitive GUI Help Combining GUI and CLI Configuration Saving Configuration Entered with the GUIConfiguring Multiple Devices Upgrading the GUI To upgrade the GUIThen delete the GUI resource file, using the command Load the new file onto the switch Install the new file as the preferred GUI TroubleshootingPoint your web browser at the switch’s IP address Deleting Temporary Files Accessing the Switch via the GUI Traffic Flow Time and NTP SolutionSolutions IP Addresses and Dhcp Loading Software Page A Security Officer prompt looks like Using Scripts onUser Accounts and Privileges Snmp and MIBs on Login To display the current operating mode, enter the command Normal Mode and Security ModeOperating the switch Specific Parameters Storing Files in Flash Memory Remote Management Example output from the Show File command Using Scripts Storing Multiple Scripts Saving the Switch’s Configuration File Naming Conventions Loading and Uploading FilesFile extensions and file types Extension File type/function SPA Loading Files Download the patch file Setting Loader DefaultsExample Load a Patch File Using Http To load a patch file Configure the Loader To upload a log file Uploading Files From the SwitchExample Upload a Configuration File Using Tftp More information Upgrading Switch Software To upgrade to a new software release Example Upgrade to a New Software Release UsingLoad the new release file onto the switch Test the release Enter the licence password for the software releaseMake the release the default permanent release Enter licence information for the release To upgrade to a new patch file Example Upgrade to a new patch fileCheck that the file is successfully loaded Snmp and MIBs Using the Built-in Editor For More About Operations and Facilities Where interface is the name of an interface, such as vlan11 AT-8800 Series Switch User Guide Enabling and Disabling Switch Ports Switch Ports To display information about switch ports, use the command To enable or disable a switch port, use the commands STP Autonegotiation of Port Speed and Duplex Mode Speed 10/100 Port Trunking Show VLAN=ALL Packet Storm Protection Layer 2 Switching Port Mirroring Port security Virtual Local Area Networks VLANs Example output from the Show Switch Port Intrusion command Tpid Vlan Tagging Format of user priority and Vlan data in an Ethernet frame Vlan Membership using Vlan Tags Vlan Membership of Untagged Packets Vlan membership of example of a network using tagged portsMember ports Vlans with untagged ports Creating VLANs To destroy a VLAN, use the command To add tagged ports to a VLAN, use the command Protected VLANs Summary of Vlan tagging rulesVlan Interaction with STPs and Trunk Groups Generic Vlan Registration Protocol Gvrp Layer 2 Switching ProcessIngress Rules Learning Process Forwarding Process Layer 2 Filtering Example output from the Show Switch Filter command Egress Rules Quality of Service Spanning Tree Modes Spanning Tree Protocol STP Spanning tree port states State Meaning Spanning Tree and Rapid Spanning Tree Port StatesRapid Spanning Tree port states State Meaning Configuring STP SET STP=stpnameALL PRIORITY=0..65535 Example output from the Show STP command Do not occur Parameter Meaning Switch Max Age To display STP port information, use the command Example output from the Show STP Port command 94AT-8800 Series Switch User Guide To show STP counters, use the command Discarded 96AT-8800 Series Switch User GuideReceive Transmit Igmp Snooping Interfaces to Layer 3 Protocols Disable Igmpsnooping Group List Example output from the Show IP Igmp command Parameters TriggersEvent Description Layer IP Multicasting Then use either of the following commandsDisplays the interfaces enabled for IP routing Figure Internet Protocol IP Novell IPX Routing Information Protocol RIPLayer 103 AppleTalk Example output from the Show IPX Circuit command Layer 105 Resource Reservation Protocol RsvpPage Maintenance and Troubleshooting Switch startup messages How the Switch Starts Up Set system territory How to Avoid Problems Watch for software updates If you accidentally do this, you will need to What to Do if You Clear Flash Memory Completely What to Do if the PPP Link Disconnects Regularly What to Do if Passwords are LostGetting the Most Out of Technical Support Maintenance and Troubleshooting 113 Resetting Switch DefaultsChecking Connections Using Ping To get debugging output, enter the command Telnet Fails Troubleshooting IP ConfigurationsTo set Ping defaults, enter the command Stop a Ping that is in progress, enter the command Maintenance and Troubleshooting 115 Troubleshooting Dhcp IP AddressesYour switch is acting as a Dhcp client Your switch is acting as a Dhcp server No Routes are Visible to the Remote Router Troubleshooting IPX ConfigurationsTo check that the PPP link is active, enter the command Local Workstations Can Not Access Remote Servers Check route tables Using Trace Route for IP Traffic To halt a trace route that is in progress, enter the command