Cisco ASR 1000 Configuration Guide

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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 7 Configuring the ATM SPAs
Configuration Tasks
Saving the Configuration
To save your running configuration to nonvolatile random-access memory (NVRAM), use the following
command in privileged EXEC configuration mode:
Note To permanently save your configuration changes, you must write them to the nonvolatile RAM
(NVRAM) by entering the copy running-config startup-config command in privileged EXEC mode.
For more information about managing configuration files, refer to the Cisco IOS XE Configuration
Fundamentals Configuration Guide, Release 2 and Cisco IOS Configuration Fundamentals Command
Reference publications for your specific software.
Shutting Down and Restarting an Interface on a SPA
Shutting down an interface puts it into the administratively down mode and takes it offline, stopping all
traffic that is passing through the interface. Shutting down an interface, though, does not change the
interface configuration.
As a general rule, you do not need to shut down an interface if you are removing it and replacing it with
the same exact model of SPA in an online insertion and removal (OIR) operation. However, we
recommend shutting down an interface whenever you are performing one of the following tasks:
• When you do not need to use the interface in the network.
• Preparing for future testing or troubleshooting.
• Changing the interface configuration in a way that would affect the traffic flow, such as changing
the encapsulation.
• Changing the interface cables.
• Removing a SPA that you do not expect to replace.
• Replacing an interface card with a different model of card.
Shutting down the interface in these situations prevents anomalies from occurring when you reinstall the
new card or cables. It also reduces the number of error messages and system messages that might
otherwise appear.
Note If you plan to replace an existing ATM port adapter with an ATM SPA in the Cisco ASR 1000 Series
Router and want to use the same configuration, save the slot’s configuration before physically replacing
the hardware. This is because all slot configuration is lost when you replace one card type with another
card type, even if the two cards are functionally equivalent. You can then re-enter the previous
configuration after you have inserted the ATM SPA.
To shut down an interface, perform the following procedure beginning in global configuration mode:
Command Purpose
Router# copy running-config startup-config Writes the new configuration to NVRAM.

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English