Configuring Serial Interfaces on the Cisco ASR 9000 Series Router
How to Configure Serial Interfaces
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Cisco ASR 9000 Aggregation Services Router Interfaces and Hardware Component Configuration Guide
OL-26061-03
The user can configure IPHC using QoS as follows:
• Create a QoS policy-map with the compress header ip action.
• Attach the IPHC profile to the interface using the ipv4 iphc profile profile_name mode
service-policy command.
• Attach the QoS policy-map with compress header ip action using the service-policy output
command.
See “IPHC on a Serial Interface with MLPPP/LFI and QoS Configuration: Example” section on
page 547 for an example of how to configure IPHC using QoS.
For complete information on configuring QoS, refer to the Cisco XR 12000 Series Router Modular
Quality of Service Configuration Guide and the Cisco XR 12000 Series Router Modular Quality of
Service Command ReferenceCisco ASR 9000 Series Aggregation Services Router Modular Quality of
Service Configuration Guide and the Cisco ASR 9000 Series Aggregation Services Router Modular
Quality of Service Command Reference.
How to Configure Serial Interfaces
After you have configured a channelized or clear channel T3/E3 controller, as described in the
“Configuring Clear Channel T3/E3 and Channelized T3 and T1/E1 Controllers on the
Cisco ASR 9000 Series Router” module in this document, you can configure the serial interfaces
associated with that controller.
The following tasks describe how to configure a serial interface:
• Bringing Up a Serial Interface, page 514
• Configuring Optional Serial Interface Parameters, page 518
• Creating a Point-to-Point Serial Subinterface with a PVC, page 521
• Configuring Optional PVC Parameters, page 524
• Modifying the Keepalive Interval on Serial Interfaces, page 526
• How to Configure a Layer 2 Attachment Circuit, page 528
–
Creating a Serial Layer 2 Subinterface with a PVC, page 529
–
Configuring Optional Serial Layer 2 PVC Parameters, page 531
• Configuring IPHC, page 533
–
Configuring the IPHC Slot Level Command, page 534
–
Configuring an IPHC Profile, page 536
–
Configuring an IPHC Profile, page 538
–
Enabling an IPHC Profile on an Interface, page 541
Bringing Up a Serial Interface
This task describes the commands used to bring up a serial interface.