Cisco CSR 1000v Series User Manual

What to Do Next
The following shows an example of entering GRUB mode and using the configuration register. You access
the GRUB mode by entering the Cisco IOS XE config-register command and specifying the value as “0000”.
Router(config)# config-register 0x0000
GNU GRUB version 0.97 (638K lower / 3143616K upper memory)
[ Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists the possible
completions of a device/filename. ESC at any time exits to menu. ]
grub> help
[ Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists the possible
completions of a device/filename. ESC at any time exits to menu. ]
confreg [VALUE] help [--all] [PATTERN ...]
grub> confreg
Configuration Summary
(Virtual Configuration Register: 0x0)
enabled are:
boot: the boot loader
do you wish to change the configuration? y/n [n
]:
ignore system config info? y/n [n
]:
automatically boot default system image? y/n [n
]:
Configuration Register: 0x0
grub> confreg
Configuration Summary
(Virtual Configuration Register: 0x0)
enabled are:
boot: the boot loader
do you wish to change the configuration? y/n [n
]:
ignore system config info? y/n [n]:
automatically boot default system image? y/n [n]:
Configuration Register: 0x42
grub> confreg 0x2102
Configuration Register: 0x2102
grub> confreg
Configuration Summary
(Virtual Configuration Register: 0x2102)
enabled are:
boot: default image
do you wish to change the configuration? y/n [n
]:
grub>
grub>
GNU GRUB version 0.97 (638K lower / 3143616K upper memory)
-------------------------------------------------------------------
0: CSR1000v - packages.conf
1: CSR1000v - csr100v-packages-universalk9
2: CSR1000v - GOLDEN IMAGE
-------------------------------------------------------------------
Use the ^ and v keys to select which entry is highlighted.
Press enter to boot the selected OS, or 'c' for a command-line.
Highlighted entry is 0:
Booting 'CSR1000v - packages.conf'
root (hd0,0)
Filesystem type is ext2fs, partition type 0x83
kernel /packages.conf rw root=/dev/ram console=ttyS1,9600 max_loop=64 HARDWARE=
virtual SR_BOOT=harddisk:packages.conf
Calculating SHA-1 hash...done
SHA-1 hash:
calculated 817e1716:e8e62778:7dd0b806:32db2bdd:13e51407
expected 817e1716:e8e62778:7dd0b806:32db2bdd:13e51407
package header rev 1 structure detected
Calculating SHA-1 hash...done
SHA-1 hash:
Cisco CSR 1000v Series Cloud Services Router Software Configuration Guide
225
Accessing and Using GRUB Mode
Modifying the Configuration Register (confreg)

Cisco CSR 1000v Series Specifications

General

Model	CSR 1000v Series
Category	Network Router
Virtualization	Yes
Form Factor	Virtual Appliance
Routing Protocols	BGP, OSPF, EIGRP, RIP, IS-IS
Minimum Memory	4 GB
Minimum vCPUs	1
Cloud Platforms	Microsoft Azure
Interfaces	Virtual Interfaces
Supported Protocols	IPv4, IPv6
VPN Protocols	IPSec, DMVPN
Security	IPS
High Availability	VRRP, HSRP, GLBP
Management	NETCONF, RESTCONF, SNMP
Management Interface	CLI