Configuring Serial Interfaces on Cisco IOS XR Software
This module describes the serial interfaces on routers supporting Cisco IOS XR software. Before you configure a serial interface, you must configure the clear channel T3/E3 controller or channelized T1/E1controller (DS0 channel) that is associated with that interface.
Feature History for Configuring Serial Controller Interfaces
Release |
Modification |
Release 3.3.0 |
This feature was introduced on the Cisco XR 12000 Series Router. |
|
Support was added on the Cisco XR 12000 Series Router for the following |
|
hardware: |
|
• Cisco XR 12000 SIP-401 |
|
• Cisco XR 12000 SIP-501 |
|
• Cisco XR 12000 SIP-601 |
|
Support was added on the Cisco XR 12000 Series Router for the following |
|
SPAs: |
|
• 2-Port and 4-Port Channelized T3 Serial SPA |
|
• 2-Port and 4-Port T3/E3 Serial SPA |
|
|
•Prerequisites for Configuring Serial Interfaces, page HC-116
•Information About Serial Interfaces, page HC-116
•How to Configure Serial Interfaces, page HC-121
•Additional References, page HC-124
Cisco IOS XR Interface and Hardware Component Configuration Guide
HC-115
Configuring Serial Interfaces on Cisco IOS XR Software
Prerequisites for Configuring Serial Interfaces
Before configuring serial interfaces, be sure that the following tasks and conditions are met:
•You must be in a user group associated with a task group that includes the proper task IDs for serial Interface commands. Task IDs for commands are listed in Cisco IOS XR Interface and Hardware Component Command Reference.
•Your hardware must support T3/E3 controllers and serial interfaces. The following hardware supports T3/E3 controllers and serial interfaces in Cisco IOS XR Software Release 3.3:
–2-Port and 4-Port Clear Channel T3/E3 SPAs
–2-Port and 4-Port Channelized T3 SPAs
Note The 2-Port and 4-Port Channelized T3 SPAs support T1/E1 controllers and DS0 channels.
•You have already configured the clear channel T3/E3 controller or channelized T3-to-T1/E1controller that is associated with the serial interface you want to configure, as described in the Configuring Clear Channel T3/E3 Controllers and Channelized T3 Controllers on
Cisco IOS XR Software module earlier in this document.
Serial interfaces are supported on the following Cisco XR 12000 Series Router shared port adapter (SPA) cards:
•2-Port and 4-Port Clear Channel T3/E3 SPAs
•2-Port and 4-Port Channelized T3 SPAs
Note The 2-Port and 4-Port Channelized T3 SPAs can run in clear channel mode, or they can be channelized into 28 T1 or 21 E1 controllers.
T3/E3 serial interfaces are automatically created on clear channel T3/E3 controllers. On channelized T3-to-T1/E1 controllers, serial interfaces are automatically created when users configure individual DS0 channel groups the T1/E1 controllers.
To configure serial interfaces, you must understand the following concepts:
•High Level Over-View: Serial Interface Configuration on Clear-Channel SPAs, page HC-117
•High Level Over-View: Serial Interface Configuration on Channelized SPAs, page HC-118
•Default Settings for Serial Interface Configurations, page HC-119
•Serial Interface Naming Notation, page HC-119
•Cisco IOS XR PPP Encapsulation, page HC-120
•Cisco IOS XR HDLC Encapsulation, page HC-120
•Keepalive Timer, page HC-120
Cisco IOS XR Interface and Hardware Component Configuration Guide
HC-116
Configuring Serial Interfaces on Cisco IOS XR Software
Information About Serial Interfaces
Table 10 provides a high-level overview of the tasks required to configure a T3 serial interface on a 2-Port and 4-Port Clear Channel T3/E3 SPA.
Table 10 |
Overview: Configuring a T3 Serial Interface on a Clear Channel SPA |
|
|
|
|
|
|
Step |
Task |
Module |
Section |
|
|
|
|
1. |
Use the hw-module subslot |
“Configuring Clear Channel T3/E3 |
“Setting the Card Type for the Clear |
|
command to set serial mode for the |
Controllers and Channelized T3 |
Channel SPAs” |
|
SPA to be T3, if necessary. |
Controllers on Cisco IOS XR |
|
|
Note By default, the 2-Port and |
Software” |
|
|
|
|
|
|
4-Port Clear Channel |
|
|
|
T3/E3 SPA is set to run in |
|
|
|
T3 mode. |
|
|
|
|
|
|
2. |
Configure the T3 controller |
“Configuring Clear Channel T3/E3 |
“Setting the Card Type for the Clear |
|
|
Controllers and Channelized T3 |
Channel SPAs” |
|
|
Controllers on Cisco IOS XR |
|
|
|
Software” |
|
|
|
|
|
3. |
Configure the serial interface that is |
“Configuring Serial Interfaces on |
“Configuring the Serial Interfaces” |
|
associated with the T3 controller |
Cisco IOS XR Software” |
|
|
you configured in Step 2. |
|
|
|
|
|
|
|
Table 11 provides a high-level overview of the tasks required to configure an E3 serial interface on a |
||
|
2-Port and 4-Port Clear Channel T3/E3 SPA. |
|
|
Table 11 |
Overview: Configuring an E3 Serial Interface on a Clear Channel SPA |
||
|
|
|
|
Step |
Task |
Module |
Section |
|
|
|
|
1. |
Use the hw-module subslot |
Configuring Clear Channel T3/E3 |
Setting the Card Type for the Clear |
|
command to set serial mode for the |
Controllers and Channelized T3 |
Channel SPAs |
|
SPA to be E3. |
Controllers on Cisco IOS XR Software |
|
|
|
|
|
2. |
Configure the E3 controller |
Configuring Clear Channel T3/E3 |
Setting the Card Type for the Clear |
|
|
Controllers and Channelized T3 |
Channel SPAs |
|
|
Controllers on Cisco IOS XR Software |
|
|
|
|
|
3. |
Configure the serial interface that is |
Configuring Serial Interfaces on |
Configuring the Serial Interfaces |
|
associated with the E3 controller |
Cisco IOS XR Software |
|
|
you configured in Step 2. |
|
|
|
|
|
|
Cisco IOS XR Interface and Hardware Component Configuration Guide
HC-117
Configuring Serial Interfaces on Cisco IOS XR Software
Information About Serial Interfaces
Table 12 provides a high-level overview of the tasks required to configure a T1 serial interface on the 2-Port and 4-Port Channelized T3 SPA.
Table 12 |
Overview: Configuring a Serial Interface on a T1 DS0 Channel |
|
|
|
|
|
|
Step |
Task |
Module |
Section |
|
|
|
|
1. |
Configure the T3 controller |
“Configuring Clear Channel |
“Configuring a Channelized T3-to-T1 |
|
parameters and set the SPA mode to |
T3/E3 Controllers and |
Controller” |
|
be T3. |
Channelized T3 Controllers on |
|
|
28 T1 controllers are automatically |
Cisco IOS XR Software” |
|
|
created. |
|
|
|
|
|
|
2. |
Create and configure DS0 channel |
“Configuring Clear Channel |
“Configuring a Channelized T3-to-T1 |
|
groups on the T1 controllers you |
T3/E3 Controllers and |
Controller” |
|
created in Step 1. |
Channelized T3 Controllers on |
|
|
|
Cisco IOS XR Software” |
|
|
|
|
|
3. |
Configure the Serial interfaces that |
“Configuring Serial Interfaces on |
“Configuring the Serial Interfaces” |
|
are associated channel groups you |
Cisco IOS XR Software” |
|
|
created in Step 2. |
|
|
|
|
|
|
Table 13 provides a high-level overview of the tasks required to configure an E1 serial interface on the 2-Port and 4-Port Channelized T3 SPA.
Table 13 |
Overview: Configuring a Serial Interface on an E1 DS0 Channel |
|
|
|
|
|
|
Step |
Task |
Module |
Section |
|
|
|
|
1. |
Configure the T3 controller |
Configuring Clear Channel T3/E3 |
Configuring a Channelized T3-to-T1 |
|
parameters and set the SPA mode to |
Controllers and Channelized T3 |
Controller |
|
be E3. |
Controllers on Cisco IOS XR |
|
|
21 E1 controllers are automatically |
Software |
|
|
created. |
|
|
|
|
|
|
2. |
Create and configure DS0 channel |
Configuring Clear Channel T3/E3 |
Configuring a Channelized T3-to-E1 |
|
groups on the E1 controllers you |
Controllers and Channelized T3 |
Controller |
|
created in Step 1. |
Controllers on Cisco IOS XR |
|
|
|
Software |
|
|
|
|
|
3. |
Configure the Serial interfaces that |
Configuring Serial Interfaces on |
Configuring the Serial Interfaces |
|
are associated channel groups you |
Cisco IOS XR Software |
|
|
created in Step 2. |
|
|
|
|
|
|
Cisco IOS XR Interface and Hardware Component Configuration Guide
HC-118