Configuring Dynamic Subscriber Interfaces over Bridged Ethernet

To configure a dynamic subscriber interface in an IP over bridged Ethernet over ATM configuration by using DHCP events, perform the following steps:

1. Configure DHCP server.

   For instructions, see Configuring the DHCP Local Server .

2. Create an ATM major interface.

   host1(config)#interface atm 3/3

3. Create an ATM 1483 subinterface.

   host1(config-if)#interface atm 3/3.1

4. Configure an associated PVC for the ATM 1483 subinterface by specifying the VCD, the VPI, the VCI, and the encapsulation type.

   host1(config-subif)#atm pvc 10 100 22 aal5snap

5. Specify bridged Ethernet as the encapsulation method on the ATM 1483 subinterface.

   host1(config-subif)#encapsulation bridge1483

6. Create the primary IP interface by assigning an IP address and mask to the bridged Ethernet interface (or make it unnumbered).

   host1(config-subif)#ip address 192.168.2.20 255.255.255.0

7. Configure the primary IP interface to enable dynamic creation of subscriber interfaces.

   host1(config-subif)#ip auto-configure ip-subscriber

8. (Optional) Specify the source address of traffic that is destined for the primary IP interface.

   host1(config-subif)#ip source-prefix 192.168.2.20 255.255.255.0

Figure 24 shows the interface stack built for this configuration.

Figure 24: IP over Bridged Ethernet over ATM Dynamic Subscriber Interface Configuration

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