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How To Configure an AP to Find the ExtremeWireless Controller with DHCP Option 78 on a Windows Server

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TitleHow To Configure an AP to Find the ExtremeWireless Controller with DHCP Option 78 on a Windows Server
Objective
How To Configure an AP to Find the ExtremeWireless Controller with DHCP Option 78 on a Windows Server
Environment
  • ExtremeWireless
  • Windows Server 
  • DHCP
  • Option 78
  • ExtremeCloud Appliance 
Procedure
Creating Option 78

 To create option 78 as a byte array, perform the following steps:
  1. Click Start > Administrative Tool > DHCP
  2. Right-click the server node, and select Set predefined options.
  3. Select Add, and type a name for the option, for example "SLP DA".
  4.  Set the data type to Byte, and select the Array checkbox.
  5. 5 In the Code field, type 78.
  6. 6 Type a description for the option, for example, "Extreme Networks SLP Discovery", and then select OK.
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Configuring Option 78:
  1. In the Start IP address and the End IP address text boxes, type the start and end of the IP address range that you want to be distributed to the network. You must use the range provided by your network administrator.
  2. In the Length text box, type the numeric value of the subnet mask bits, or in the Subnet mask text box, type the subnet mask IP address. A subnet mask defines how many bits of an IP address to use for the network/subnet IDs and how many bits to use for the host ID. You can specify the subnet mask by length or as an IP
  3. Click Next. The Add Exclusions window displays.
  4. In the Start IP address and the End IP address text boxes, type the start and end of the IP address range that you want to exclude from the distribution. You must use the exclusion range provided by your network administrator.
  5. Click Next. The Lease Duration window displays. The DHCP server assigns a client an IP address for a given amount of time. The amount of time for which the IP address can be leased is defined in the Lease Duration window.
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  1. In the Days, Hours and Minutes text box, type the lease duration. You must use the Lease Duration as specified by your network administrator.
  2. Click Next. The Configure DHCP Options window displays
  3. Select Yes, I want to configure these options now, and then click Next. The Router (Default Gateway) window displays.
  4. In the IP address text box, type the network’s default gateway and click Add. You must use the default gateway provided by your network administrator
  5. Click Next. The Domain Name and DNS Servers window displays.
  6. In the Parent domain text box, type your company’s domain name. You must use the Parent Domain provided by your network administrator.
  7. In the Server name text box, type your server name. You must use the server name provided by your network administrator.
  8. In the IP address text box, type your server’s IP address, and then click Add.
  9. Click Next. The WINS Servers window displays.
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  1. Click Next. The Activate Scope window displays.
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  1. Select Yes, I want to activate this scope now, and click Next. The wizard displays the following message: You have successfully completed the New Scope wizard.
  2. Click Finish.
  3. Click Start > Administrative Tool > DHCP. The DHCP console tree displays.
  4. Right-click Server Options in the tree and select Configure Options
  5. On the General tab, enable 078 SLP DA
  6. Select Yes, I want to activate this scope now, and click Next. The wizard displays the following message: You have successfully completed the New Scope wizard.
  7. Click Finish.
  8. Click Start > Administrative Tool > DHCP. The DHCP console tree displays.
  9. Right-click Server Options in the tree and select Configure Options
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  1. On the General tab, enable 078 SLP DA
  2. In the lower pane of the screen, type the dotted decimal values of the SLP DA’s IP address. The Wireless APs use the SLP DA to discover the ExtremeWireless Appliance. The mobility agents use the SLP DA to discover the mobility manager.
Note: If there is no SLP deployment on the enterprise network, the ExtremeWireless Appliance is configured to act as a DA by default. If you put the appliance's IP address(es) in a DHCP server for Option 78, Wireless APs will interact with the appliance for discovery. Similarly, the mobility agents also interact with the ExtremeWireless Appliance to discover the mobility manager.
 
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