Cisco ASR 9000 Series Configuration Manual page 37

Router Recovery with ROM Monitor
Note On the RSP3 card, the ROMMON variable TFTP_MGMT_INTF=port_no is not required for a TFTP
boot.
SUMMARY STEPS
1. Back up the router configuration while still in EXEC mode.
2. Verify the sanity of the configuration file system. Use cfs check
3. admin
4. Place all RSP cards in ROM Monitor mode. Use config-register boot-mode rom-monitor location all
and reload location all commands.
5. Clear the ROM Monitor environmental variables on all RSP cards. Use unset BOOT command, unset
TFTP_FILE command and sync command.
6. Clear the ROM Monitor environment variables BOOT_DEV_SEQ_OPER and MIRROR_ENABLE, if
disk mirroring is enabled. Use unset BOOT_DEV_SEQ_OPER command, unset MIRROR_ENABLE
command and sync command.
7. On the RSP card , set the environment variables that configure the Management Ethernet interface for use
in ROM Monitor mode. Use IP_ADDRESS=ip_address command, IP_SUBNET_MASK=mask command
and DEFAULT_GATEWAY=ip_address command.
8. On the RSP card , set the TFTP environment variables. Use TFTP_VERBOSE=print_setting command,
TFTP_RETRY_COUNT=retry_count command, TFTP_TIMEOUT=timeout command,
TFTP_CHECKSUM=0 command, TFTP_SERVER=server_ip_addr command,
TFTP_MGMT_INTF=port_no command
9. On the RSP card , set the TURBOBOOT variables. Use TURBOBOOT=on,boot-device,options command
and sync command.
10. On the RSP card , boot the vm image located on the tftp server. Use boot tftp://server/directory/filename
11. Reset all other RSP cards to boot the Cisco IOS XR software. Use confreg and reset commands.
12. Restore disk mirroring, if it was disabled in
OL-30420-01
◦ IP address of the Management Ethernet interface on the RSP
◦ Subnet mask of the Management Ethernet interface on the RSP
◦ IP address of the default gateway that serves your router
◦ IP address of the TFTP server from which the software will be downloaded
◦ The filename and directory of the vm installation file that will be installed on the router
◦ Boot device for your system.
Cisco ASR 9000 Series Aggregation Services Router ROM Monitor Configuration Guide, Release 5.1.x
Reinstalling to a CiscoASR 9000 SeriesRouter from a TFTP Server Image
"Step 5".
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