How to Upgrade/ Downgrade CISCO IOS-XR 32-bit
Hi Guys,
I want to share how to upgrade or downgrade Cisco IOS-XR 32-bit using method turbo boot.
IOS-XR 32-bit is a bit different from 64-bit architecture IOS-XR, So I think it’s a good thing to share with you if you get stuck during the installation.
Below is a step-by-step :
- You can download the cisco ios on the cisco software download that is for the link https://software.cisco.com/download/home In this scenario I am using cisco ASR-9001.
- Prepare the TFTP Server, It’s very simple using TFTPD64 apps, you can download it via this link https://pjo2.github.io/tftpd64/.
Current Directory: It’s a directory where are you save the ios file.
Server Interfaces: It’s an interface that’s connected to the router later (Ethernet) it’s just the same subnet between the router and laptop.
3. Connect to the router using a console cable and ethernet cable on the MgmtEth0/RSP0/CPU0/1, Enter the ROMMON by pressing CTRL+C during the booting process.
4. After successful entering the ROMMON then you can set this command below on the router :
We set the laptop address using 192.168.0.1 and the router is 192.168.0.2
rommon B1 > unset BOOT
rommon B2 > sync
rommon B3 > unset BOOT_DEV_SEQ_OPER
rommon B4 > sync
rommon B5 > priv
You now have access to the full set of monitor commands.
Warning: some commands will allow you to destroy your
configuration and/or system images and could render
the machine unbootable.
rommon B6 > diswd
Watchdog Disabled
rommon B7 > IP_ADDRESS=192.168.0.2
rommon B8 > IP_SUBNET_MASK=255.255.255.0
rommon B9 > DEFAULT_GATEWAY=192.168.0.1
rommon B10 > TFTP_RETRY_COUNT=4
rommon B11 > TFTP_TIMEOUT=6000
rommon B12 > TFTP_CHECKSUM=1
rommon B13 > TFTP_SERVER=192.168.0.1
rommon B14 > TFTP_MGMT_INTF=1
rommon B15 > TFTP_BLKSIZE=1400
rommon B16 > TURBOBOOT=on,disk0:,format
rommon B17 > sync
rommon B18 > boot tftp://192.168.0.1/asr9k-mini-px.vm-6.4.2
After you insert the command above please wait until the router completed booting using the new software version.
5. If the login prompt already appears you can enter that, then please verify using show version, show install active summary.
Thanks for reading this blog, I hope it’s can be helpful.
-Adi
