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FINAL DRAFT —Cisco Confidential
3-14
Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-17502-01
Chapter 3 Configuring General Router Features
Navigating Cisco IOS XR Software Command Modes
Entering EXEC Commands from a Configuration Mode
EXEC commands can be executed from any configuration mode by preceding the command with the do
keyword. Executing EXEC commands from a configuration mode allows you to view the state of the
system without exiting the configuration mode. For example:
RP/0/RSP0/CPU0:router(config)# do show version
Cisco IOS XR Software, Version 3.7.2.10I[FCI_DT_IMAGE]
Copyright (c) 2008 by Cisco Systems, Inc.
ROM: System Bootstrap, Version 0.63(20081010:215422) [ASR9K ROMMON],
router uptime is 1 week, 1 day, 11 hours, 47 minutes
System image file is "bootflash:disk0/asr9k-os-mbi-3.7.2.10I/mbiasr9k-rp.vm"
cisco ASR9K Series (MPC8641D) processor with 4194304K bytes of memory.
MPC8641D processor at 1333MHz, Revision 2.2
40 GigabitEthernet/IEEE 802.3 interface(s)
2 Ethernet/IEEE 802.3 interface(s)
12 TenGigabitEthernet/IEEE 802.3 interface(s)
219k bytes of non-volatile configuration memory.
Router submode
configuration
Router configuration submodes are accessed from router configuration mode. The following
command syntax is used for entering router address family configuration submode:
RP/0/RSP0/CPU0:router(config)# router ospf 100
RP/0/RSP0/CPU0:router(config-ospf)# security ttl
For more information, see the following Cisco Systems documents:
• Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide
• Cisco ASR 9000 Series Aggregation Services Router Routing Command Reference
ROM Monitor
(ROMMON) mode
The ROM Monitor is a bootstrap program that initializes the hardware and boots the system when a
router is powered on or reset. ROM Monitor mode is also known as “ROMMON,” which reflects the
CLI prompt for the mode.
rommon B1>
During normal operation, users do not interact with ROMMON. This mode is accessed only by
manually interrupting the boot process and placing the system in ROMMON. Once in ROMMON,
you can perform ROM Monitor tasks, including reinstallation of the Cisco IOS XR Software,
password recovery, and other diagnostic tasks.
The ROM Monitor CLI mode is accessible only from a terminal connected directly to the Console
port of the primary RSP, a terminal-modem connection to the AUX port, or through a terminal server.
See Cisco ASR 9000 Series Aggregation Services Router ROM Monitor Guide for information and
instructions on using ROM Monitor mode.
Table 3-4 Common Command Modes and CLI Prompts (continued)
Command Mode Description