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    Configuring DHCP Server Options in Advanced Mode

    This procedure describes how to configure advanced DHCP server options in the Selfcare Portal.

    Note: For a VPN site, you can configure either DHCP server or DHCP relay, but not both. You can configure DHCP server in one site and DHCP relay at other sites can point to the DHCP server. Alternatively, you can configure the MX Series router DHCP relay option to point to a DHCP server located at your site.

    Caution: DHCP server is supported only for sites where all access links are connected to the same routing instance and the routing instances that are connected to the access links are for only one site. cCPE Selfcare Application does not enforce this restriction. If your access links and routing instances are not connected in this way, the DHCP server does not operate correctly.

    To configure the advanced DHCP server options using the Selfcare Portal:

    1. In the Selfcare Portal task pane, select Administration > Site Configuration.
    2. From the Site selection list, select the site for which you want to configure the DHCP server.

      The

    3. Select the DHCP Server tab.

      The DHCP Server page is displayed.

    4. Select the Advanced button.

      The tabs for advanced mode are displayed.

    5. Select the Pools Settings tab.

      The Pools Settings page appears, an example of which is shown in Figure 1.

      Figure 1: Example-DHCP Server Pool Settings for Advanced Mode

      Example-DHCP Server Pool Settings for
Advanced Mode
    6. (Optional) Add a new address pool:
      1. Select the Add (+) icon next to the Pools list.

        The Add Pool dialog box is displayed.

      2. In the New Pool Name field, specify a name for the new address pool and select Add.
      3. Specify the information for the fields described in Table 1.

      Table 1: DHCP Server Pool Fields for Advanced Mode

      Field

      Action

      Pool Name

      Specify the name of the address pool. The pool name is an arbitrary label used to distinguish different address pools.

      Domain Name

      Specify the name of the domain in which clients search for a DHCP server host. This is the default domain name that is appended to hostnames that are not fully qualified. This is equivalent to DHCP option 15.

      Network

      Specify a network range in the form: x.x.x.x/mask; the IP address must be routable.

      Server Identifier

      Specify the IP address that is used as the source address the DHCP server includes in IP packets when communicating with clients. The address is included in the DHCP packet in option 54.

      Max Lease Time

      Specify the maximum length of time, in seconds, that the lease is held for a client if the client does not renew the lease. This is equivalent to DHCP option 51.

      Grace Period

      Specify the amount of time, in seconds, that the client retains the address lease after the lease expires. The address cannot be reassigned to another client during the grace period.

      Netbios Node Type

      Specify the NetBIOS node type. This is equivalent to DHCP option 46.

      Boot Server

      Specify the address of the boot server advertised to DHCP clients. The client uses a boot file located on the boot server to complete DHCP setup. This is equivalent to DHCP option 66.

      Boot File

      Specify the boot file advertised to DHCP clients. After the client receives an IP address and the boot file location from the DHCP server, the client uses the boot image stored in the boot file to complete DHCP setup.

      TFTP Server

      Specify the Trivial File Transfer Protocol (TFTP) server that the client uses to obtain the client configuration file. This is equivalent to DHCP option 150.

    7. (Optional) Modify an existing address pool:
      1. From the Pools list, select the name of the address pool.
      2. Select the Pools Settings tab.

        The Pools Settings page is displayed.

    8. Configure the address pool ranges:
      1. Select the Pool Ranges tab.

        The Pool Ranges page is displayed, an example of which is shown in Figure 2.

        Figure 2: DHCP Pool Ranges Page

        DHCP Pool Ranges Page
      2. Specify the information for the fields described in Table 2.

        Table 2: DHCP IP Address Pool Range Fields

        Field

        Action

        Range name

        Specify a named range of IPv4 addresses, used within an address-assignment pool.

        Low

        Specify the lower limit of the address range.

        High

        Specify the upper limit of the address range

    9. Select the Routers tab.

      The Router IP page appears, an example of which is shown in Figure 3.

      Figure 3: Example-Router IP Page

      Example-Router IP Page
    10. On Router IP page, select the Add (+) icon and specify the IP address of one or more routers located on your subnet. This is the equivalent of DHCP option 3.
    11. Select the Names Servers tab.

      The Name Server page appears, an example of which is shown in Figure 4.

      Figure 4: Example-Name Servers Page

      Example-Name Servers Page
    12. On the Name Server page, specify the IP address of one or more Domain Name System (DNS) servers available to clients to resolve hostname-to-client mappings. This is equivalent to DHCP option 6.

      Specify the IP addresses of the servers in order of preference.

    13. Select the Wins Servers tab.

      The Win Server IP page appears as shown in Figure 5.

      Figure 5: Win Server IP Page

      Win Server IP Page
    14. On the Win Server IP page, specify the IP address of one or more Windows Internet Name Service (WINS) servers. This is equivalent to DHCP option 44.

      Specify the IP addresses of the servers in order of preference.

    15. Select the Static Host Mapping tab.

      The Static Host Mapping page appears, an example of which is shown in Figure 6.

      Figure 6: Example-Static Host Mapping Page

      Example-Static Host Mapping
Page
    16. Specify static bindings (a hostname, IP address, and hardware MAC address) for your DHCP clients by specifying the information for the fields described in Table 3. A static binding is a mapping between a fixed IP address and a client’s MAC address or client identifier.

      Table 3: Static Host Mapping Fields

      Field

      Action

      Static Host Name

      Specify the hostname of the client requesting the DHCP server.

      IP Address

      Specify the IP address assigned to the client.

      Hardware Address

      Specify the MAC address of the client. This is a hardware address that uniquely identifies a client on the network.

    17. Select Update to save the changes.

    Modified: 2015-11-09