Chapter 6: System Control Module (SCM)
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 191
3. Use Secure FTP (SFTP) or FTP to transfer the configuration off the CMTS and save it on a local machine/server. The
configuration will be required later.
4. Power down the C4 CMTS.
5. Remove the SCM or SCM-II cards from the chassis.
6. Insert the SCM 3 modules in Slots 19 (and 20 if duplex).
7. Reconnect the serial port console cable(s).
8. Power up the chassis with both SCM 3 cards inserted.
9. Wait for the RCM and SCM 3 modules to go into Active/Standby state on the Release 8.x image.
10. Using the serial port, re-populate the configuration by cutting and pasting the previously saved configuration (from
step above). You should paste a small portion of the configuration file at a time and verify after each paste that no
errors have occurred.
Note: For large configuration files, time can be saved by using only the serial port to configure the network interfaces,
routing protocols, inband access, ACLs, users, authentication (local, TACACS, RADIUS), vtys, and telnet or SSH access. Then
configure ftp-server and ftp the backup configuration onto the CMTS. Then perform the following command: exc file
backupMMDDYY.cfg.
11. Save your configuration:
write memory
12. Verify CMs register.
13. Commit the software image to all client cards:
reload commit
The C4 CMTS is now operating with SCM 3s and its configuration file is back\-upMMDDYY.cfg. It is running on Release
8.x.x.x software, which has been committed. If the image currently on the SCM cards is not the desired load, then upgrade
to the desired load using the normal upgrade procedure. Refer to the Release Notes for more information.
Upgrade to an SCM 3 Using the OOBM Ethernet Interface (via rear port of the SCM PIC)
1. Perform a write memory to save the existing configuration. Make sure the chassis is running the 8.x.x.x software load.
Once you have verified that you are on the 8.x.x.x software load, execute a reload commit.
2. Back up the existing configuration with the following command:
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