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    Configuring Relay Option 60 Information for Forwarding Client Traffic to Specific DHCP Servers (NSM Procedure)

    You can configure the extended DHCP relay agent to use the DHCP vendor class identifier option (option 60) in DHCP client packets to forward client traffic to specific DHCP servers or to drop selected DHCP client packets. This feature is useful in network environments where DHCP clients access services provided by multiple vendors and DHCP servers.

    1. In the NSM navigation tree, select Device Manager > Devices.
    2. Click the Device Tree tab, and then double-click the device to select it.
    3. Click the Configuration tab. In the tree, expand Forwarding Options > DHCP Relay.
    4. Select Relay Option 60.
    5. Add or modify settings as specified in Table 1.
    6. Click one:
      • OK—Saves the changes.
      • Cancel—Cancels the modifications.

    Table 1: Relay Option 60 Configuration Details

    Task

    Your Action

    Configure the match criteria when you use the DHCP vendor class identifier option (option 60) in DHCP client packets to forward client traffic to specific DHCP servers.

    1. In the Comment box, enter the comment for the relay option 60.
    2. Click Vendor Option next to Relay Option 60.
    3. In the Comment box, enter the comment for Vendor Option.
    4. Click Default Relay Server Group next to Vendor Option and select the name of the default DHCP relay server group.
      • Select Drop to drop DHCP client packets that contain an option 60 string that matches the ASCII or hexadecimal match string and match criteria.

    Configure the match string using the Equals and Starts With options.

    1. Expand Equals and Starts With next to Default Relay Server Group.
    2. Click Add new entry next to Equals and Starts With.
    3. Expand ascii.
    4. In the name box, enter the ASCII match string of 1 through 255 alphanumeric characters.
    5. Click Relay Server Group next to ascii.
    6. In the Comment box, enter the comment for the ASCII.
    7. Select the name of the extended DHCP local server group and enter the group name in the box.
      • Select Drop to drop DHCP client packets that contain an option 60 string that matches the ASCII or hexadecimal match string and match criteria.
    8. Click Hexadecimal next to ascii.
    9. Click Add new entry next to Hexadecimal.
    10. Expand hexadecimal.
    11. In the Name box, enter the Hexadecimal match string.
    12. Click Relay Server Group next to ascii.
    13. In the Comment box, enter the comment for the ASCII.
    14. Select the name of the extended DHCP local server group and enter the group name in the box.
      • Select Drop to drop DHCP client packets that contain an option 60 string that matches the ASCII or hexadecimal match string and match criteria.

    Published: 2013-01-02