Руководство По Устранению Ошибки для Cisco Cisco Packet Data Gateway (PDG)
Maintenance
▀ Configuring an Online Upgrade
▄ Cisco ASR 5000 Series Packet Data Interworking Function Administration Guide
OL-22963-01
Configuring an Online Upgrade
This section explains how to configure an online upgrade so that an online PDIF can be shut down for an upgrade
without dropping any completed sessions.
without dropping any completed sessions.
A primary PDIF chassis (P) is temporarily connected to a backup PDIF chassis (B). PDIF (B) has the same
configuration as PDIF (P). Once PDIF (P) and PDIF (B) are synchronized with established calls, switchover is initiated.
PDIF (B) temporarily assumes the role of the active PDIF chassis while the original primary chassis (P) is upgraded.
During the upgrade process, the DNS prevents all new calls to PDIF (P) and redirects them to PDIF (B).
configuration as PDIF (P). Once PDIF (P) and PDIF (B) are synchronized with established calls, switchover is initiated.
PDIF (B) temporarily assumes the role of the active PDIF chassis while the original primary chassis (P) is upgraded.
During the upgrade process, the DNS prevents all new calls to PDIF (P) and redirects them to PDIF (B).
Once the upgrade is complete, PDIF (P) is rebooted, and after PDIF (P) and PDIF (B) are synchronized, the switchover
puts PDIF (P) back on line. PDIF (B) is removed from the system and configured for another upgrade elsewhere in the
network.
puts PDIF (P) back on line. PDIF (B) is removed from the system and configured for another upgrade elsewhere in the
network.
I
MPORTANT
:
There is no fault detection or redundancy enabled during the upgrade process.
To configure an online upgrade:
Step 1
Step 2
Familiarize yourself with the organizational flow by referring to the chart found in the section
Step 3
Step 4
Step 5
Step 6
I
MPORTANT
:
Commands used in the configuration examples in this section provide base functionality to the
extent that the most common or likely commands and/or keyword options are presented. In many cases, other optional
commands and/or keyword options are available. Refer to the Command Line Interface Reference for complete
information regarding all commands.
commands and/or keyword options are available. Refer to the Command Line Interface Reference for complete
information regarding all commands.
Prerequisites
The following lists the prerequisites for a successful upgrade:
PDIF Primary (P) is an online chassis, with PDIF Backup (B) used solely for upgrades in a non-redundant
system.
The backup chassis needs to have at least as many SMC and PSC cards as the primary chassis. It is not important
if the backup has additional cards.
Provide a secure transfer protocol like SFTP. FTP is not recommended.