Configuration Tasks

To configure a Cisco HDLC interface:

1. Configure the physical interface on which you want to configure Cisco HDLC.

   host1(config)#interface serial 3/1:2/1

2. Select Cisco HDLC as the encapsulation method for the interface.

   host1(config-if)#encapsulation hdlc

3. Assign a local IP address to the interface.

   host1(config-subif)#ip address 192.32.10.2 255.255.255.0

4. (Optional) Use the appropriate show hdlc interface to verify that the configuration changes are correct.

encapsulation hdlc

• Use to specify Cisco HDLC as the encapsulation method for the interface.
• Example

  host1(config-if)#encapsulation hdlc

• Use the no version to disable Cisco HDLC on the interface.
• See encapsulation hdlc.

interface serial

• Use to configure a serial interface in the appropriate format by selecting a previously configured physical interface on which you want to configure Cisco HDLC. For example, to specify a channelized T3 interface, use the format slot/port:channel/subchannel.subinterface.
  • slot—Router chassis slot
  • port—Port on CT3, T3, or E3 I/O module
  • channel—T1 (DS1) channel
  • subchannel —Set of DS0 subchannels. For information about T1 subchannels, see Fractional T1 in JUNOSe Physical Layer Configuration Guide.
  • subinterface—User-assigned number that identifies a subinterface
• Example

  host1(config)#interface serial 3/1:2/1

• Use the no version to remove the interface or subinterface.
• See interface serial.

ip address

• Use to assign an IP address and subnet mask to the interface.
• Example

  host1(config-subif)#ip address 192.32.10.2 255.255.255.0

• Use the no version to remove the IP address of the interface.
• See ip address.

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