Downgrading from Cisco Remote PHY for Cisco 1x2 / Compact Shelf RPD Software 6.2

Downgrading RPD and cBR-8 Router

The following scenarios are supported in downgrading the RPD and cBR-8 router.


cBR-8 original version	RPD original version	RPD state before upgrade	cBR-8 upgrade version	RPD upgrade version	RPD state after upgrade
16.10.1c	6.2	online	Lower than 16.10.1c	Lower than 6.2	online
16.10.1c	6.2	online	Lower than 16.10.1c	Lower than 6.2	init(gcp)

Note

The versions of Cisco cBR-8 router and RPD must be compatible. That is Cisco IOS XE 16.6.x works with RPD 2.x, IOS XE 16.7.x works with RPD 3.x, IOS XE 16.8.x works with RPD 4.x, IOS XE 16.9.x works with RPD 5.x and IOS XE 16.10.x works with RPD 6.x. If the versions are not matched, RPD is then in the init(gcp) state.

Before you begin

Before downgrading the system, make sure the following requirements are met:

Download two files from the following Cisco.com Software Center URL:
- IOS XE Software: https://software.cisco.com/download/home/286283913/type
  - IOS XE Software Version 16.9.1: cbrsup-universalk9.16.09.01.SPA.bin,
  - IOS XE Software Version 16.8.1: cbrsup-universalk9.16.08.01.SPA.bin,
  - IOS XE Software Version 16.7.1: cbrsup-universalk9.16.07.01.SPA.bin, or
  - IOS XE Software Version 16.6.1: cbrsup-universalk9.16.06.01.SPA.bin
- RPD Software: https://software.cisco.com/download/home/286316518/type
  - RPD V6.1: RPD-V6-1.itb.SSA
  - RPD V5.4: RPD-V5-4.itb.SSA
  - RPD V5.3: RPD-V5-3.itb.SSA
  - RPD V5.2: RPD-V5-2.itb.SSA
  - RPD V5.1.0: RPD-V5-1.itb.SSA
  - RPD V4.1.1: RPD-V4-1-1.itb.SSA,
  - RPD V3.1.1: RPD-V3-1-1.itb.SSA, or
  - RPD V2.1: RPD-V2.1_20170725011837.itb.rel.sign.SSA
Console access for both SUPs are required.

Note

For more information about upgrading the cBR-8 router, see https://www.cisco.com/c/en/us/td/docs/cable/cbr/upgrade/guide/b_cbr_upgrade_16_10.html.

Procedure

Step 1

Copy Cisco IOS XE software package to bootflash: and stby-bootflash:.


copy <location>/<ios_xe_software_file> bootflash:  
copy <location>/<ios_xe_software_file> stby-bootflash:

Step 2

Verify Cisco IOS XE software package against the md5 hash as provided in the Cisco.com Software center.


verify /md5 bootflash:<ios_xe_software_file>  
verify /md5 stby-bootflash:<ios_xe_software_file>

Step 3

Backup the current running config to bootflash:.


copy running-config bootflash:pre-upgrade.cfg

Step 4

Check the system status prior to upgrade. It is recommended that the information is saved to compare against the system status after upgrade. For commands that are used to check the status, see the show commands at the end of this section.

Step 5

Copy the Cisco RPD image package to a TFTP server that is accessible by the RPDs.

Step 6

Verify the current RPD software version.


show cable rpd sw-version

Step 7

Downgrade all RPDs image via SSD from cBR-8.


cable rpd all ssd <tftp_server_ip> tftp <rpd_file_path>

Note

The all command is not recommended in large scale RPD deployment. If you have many RPDs, it is recommended to upgrade the RPD per line card or per OUI.

Step 8

Verify the RPD SSD status. It will show the status as downloading.


cable rpd all ssd status

Step 9

Verify that all RPDs have downloaded the new image.


cable rpd all ssd status
show cable rpd

Step 10

Configure the chassis to boot the system with target Cisco IOS XE image. Save the running configuration.


Configure terminal
no boot system
boot system bootflash:<ios_xe_software_file>
config-register 0x2102
end
copy running-config startup-config

Step 11

Reload and start the cBR-8 router.

Reload

Step 12

Check that all the RPDs have been downgraded to the target version and that they are online.


show cable rpd
show cable rpd sw-version

What to do next

These show commands might be used during the verification test:

show version
show platform
show platform diag
show environment
show environment power
show platform hardware slot P <0-5> mcu status
show facility-alarm status
show redundancy
show redundancy line card all
show ip ospf neighbor
show cable modem voice
show cable calls
show cable licenses all
show inventory
show log
show cable rpd
show cable modem summary total
show cable rpd lcha
show running
show tech

Downgrading RPD Only

Before you begin

Before downgrading the system, make sure the following requirements are met:

Download new image file from the following Cisco.com Software Center URL:

https://software.cisco.com/download/home/286316518/type
- RPD V6.1: RPD-V6-1.itb.SSA
- RPD V5.4: RPD-V5-4.itb.SSA
- RPD V5.3: RPD-V5-3.itb.SSA
- RPD V5.2: RPD-V5-2.itb.SSA
- RPD V5.1.0: RPD-V5-1.itb.SSA
- RPD V4.1.1: RPD-V4-1-1.itb.SSA,
- RPD V3.1.1: RPD-V3-1-1.itb.SSA, or
- RPD V2.1: RPD-V2.1_20170725011837.itb.rel.sign.SSA

Procedure

Step 1

Copy the Cisco RPD image package to a TFTP server that is accessible by the RPDs.

Step 2

Verify the current RPD software version.


show cable rpd sw-version

Step 3

Downgrade all RPDs image via SSD.


cable rpd all ssd <tftp_server_ip> tftp <rpd_file_path>

Note

The all command is not suggested in large scale RPD deployment. If you have too many RPDs, it is recommended to upgrade the RPD per line card or per OUI.

Step 4

Verify the RPD SSD status. It will show the status as downloading.


cable rpd all ssd status

Step 5

Verify that all RPDs have downloaded the new image.


cable rpd all ssd status
show cable rpd

Step 6

Check that all the RPDs have been downgraded to the target version and that they are online.


show cable rpd
show cable rpd sw-version

What to do next

These show commands might be used during the verification test:

show version
show platform
show platform diag
show environment
show environment power
show platform hardware slot P <0-5> mcu status
show facility-alarm status
show redundancy
show redundancy line card all
show ip ospf neighbor
show cable modem voice
show cable calls
show cable licenses all
show inventory
show log
show cable rpd
show cable modem summary total
show cable rpd lcha
show running
show tech

Downgrading cBR-8 Router Only

The following scenarios are supported in downgrading the cBR-8 router.


cBR-8 original version	RPD version	RPD state before upgrade	cBR-8 upgrade version	RPD state after upgrade
16.10.1	Lower than 6.2	init(gcp)	Lower than 16.10.1	online

Before you begin

Before downgrading the system, make sure the following requirements are met:

Download new image file from the following Cisco.com Software Center URL:

https://software.cisco.com/download/home/286283913/type
- IOS XE Software Version 16.9.1: cbrsup-universalk9.16.09.01.SPA.bin,
- IOS XE Software Version 16.8.1: cbrsup-universalk9.16.08.01.SPA.bin,
- IOS XE Software Version 16.7.1: cbrsup-universalk9.16.07.01.SPA.bin, or
- IOS XE Software Version 16.6.1: cbrsup-universalk9.16.06.01.SPA.bin
Console access for both SUPs are required.

Note

For information about upgrading the cBR-8 router, see https://www.cisco.com/c/en/us/td/docs/cable/cbr/upgrade/guide/b_cbr_upgrade_16_9.html.

Procedure

Step 1	Copy Cisco IOS XE software package to bootflash: and stby-bootflash:. `copy <location>/<ios_xe_software_file> bootflash: copy <location>/<ios_xe_software_file> stby-bootflash:`
Step 2	Verify the Cisco IOS XE software package against the md5 hash as provided in the Cisco.com Software center. `verify /md5 bootflash:<ios_xe_software_file> verify /md5 stby-bootflash:<ios_xe_software_file>`
Step 3	Backup the current running config to bootflash:. `copy running-config bootflash:pre-upgrade.cfg`
Step 4	Check system status prior to downgrade. It is recommended that the information is saved to compare against the system status after upgrade. For the commands to use to check the status, see the show commands at the end of this section.
Step 5	Configure the chassis to boot the system with target Cisco IOS XE image and save the running configuration. `Configure terminal no boot system boot system bootflash:<ios_xe_software_file> config-register 0x2102 end copy running-config startup-config`
Step 6	Reload and start the cBR-8 router. `Reload`
Step 7	Check that all the RPDs are successfully online. `show cable rpd show cable rpd sw-version`

What to do next

The following show commands might be used during the verification test:

show version
show platform
show platform diag
show environment
show environment power
show platform hardware slot P <0-5> mcu status
show facility-alarm status
show redundancy
show redundancy line card all
show ip ospf neighbor
show cable modem voice
show cable calls
show cable licenses all
show inventory
show log
show cable rpd
show cable modem summary total
show cable rpd lcha
show running
show tech

Upgrading and downgrading guide for Cisco Remote PHY for Cisco 1x2 / Compact Shelf RPD Software 6.2

Bias-Free Language

Book Title

Upgrading and downgrading guide for Cisco Remote PHY for Cisco 1x2 / Compact Shelf RPD Software 6.2

Chapter Title