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Configuring MX Series Router Cloud CPE DHCP Services

This topic describes how to configure DHCP cCPE services.

Before you begin, make sure you have completed the steps for the cCPE common configuration. See Configuring the Common Configuration for MX Series Router Cloud CPE Services.

To configure the DHCP cCPE services, complete the following tasks:

Configuring the DHCP Server on the MX Series Router for the cCPE Context

Configure DHCP local server options on the PE router. The DHCP local server receives DHCP request and reply packets from DHCP clients and then responds with an IP address and other optional configuration information to the client. To configure the local DHCP server for the cCPE context:

  1. Configure the DHCP server in each routing instance that corresponds to a subscriber VPN site.
  2. (Optional) When you configure a DHCP server in a VRF, if you want the server to handle DHCP requests sent by DHCP relay agents located at remote sites of the same VPN, you need to add tunnel interfaces to the DHCP server. Specifically, you need to add the following configuration to the DHCP server:

Configuring Subscriber Address Pools for MX Series Router Cloud CPE DHCP Services

Configure the address pools within the subscriber’s VRF routing instance. The address pools that you configure for the VPN site need to be part of the subscriber’s private subnets, configured for the IRB interface.

To configure the address pools:

  1. Configure the address pools within the subscriber’s routing instance.
  2. Configure the subnet information for the IPv4 address-assignment pool.
  3. Configure a named range of IPv4 addresses, used within the address-assignment pool.
    1. Define the lower limit of the address range.

    2. Define the upper limit of the address range.

    3. Repeat the process for each subscriber and address range.

  4. Configure address pools that can be used by different client applications. In the following example, we configure the DNS, WINS, and router servers, however, there are many other DHCP attributes that you can configure depending on your network requirements.
    1. Specify a DNS server to which clients can send DNS queries.

    2. Specify one or more NetBIOS name servers that the client uses to resolve NetBIOS names.

    3. Specify one or more routers located on the client’s subnet.

  5. Review the configuration.