Cisco Cisco Packet Data Gateway (PDG) Guida Alla Risoluzione Dei Problemi
Maintenance
Configuring an Online Upgrade ▀
Cisco ASR 5000 Series Packet Data Interworking Function Administration Guide ▄
OL-22963-01
The initial primary chassis configuration should use loopback interfaces in the ingress, egress, and AAA
contexts, and for the IP pools. This is required because SRP can be activated only for loopback interfaces. The
only exception to this would be the SRP context interface. This interface should be on a physical port that does
not use an SRP virtual MAC address. This is required because the SRP context interface is active at the same
time in both the Primary and Backup chassis.
only exception to this would be the SRP context interface. This interface should be on a physical port that does
not use an SRP virtual MAC address. This is required because the SRP context interface is active at the same
time in both the Primary and Backup chassis.
Only Administrator and Config-Administrator-level users can provision online upgrades. Refer to the Configuring
System Settings chapter of the System Administration and Configuration Guide for additional information on
administrative user privileges.
System Settings chapter of the System Administration and Configuration Guide for additional information on
administrative user privileges.
Software Upgrade Process
Follow the high-level steps below to perform a software upgrade. The figure below illustrates these steps.
Step 1
On PDIF (B), create a mirror-image of the configuration on PDIF (P). The DNS disconnects PDIF (P) and sends all new
calls to other PDIFs on the network.
calls to other PDIFs on the network.
Step 2
Once the upgrade configuration has been verified through the CLI commands, allow time for PDIF (B) to synchronize
with PDIF (P). Force an SRP switchover so that PDIF (B) becomes active and begins processing the traffic that PDIF
(P) handled.
with PDIF (P). Force an SRP switchover so that PDIF (B) becomes active and begins processing the traffic that PDIF
(P) handled.
Step 3
Upgrade the offline PDIF (P).
I
MPORTANT
:
During the upgrade, the configuration with the neighboring routers or switches remains unchanged,
because PDIF (P) and PDIF (B) share a virtual IP address.
Step 4
Reboot PDIF (P). Allow time for PDIF (P) and PDIF (B) to synchronize over the SRP link. Force an SRP switchover so
that PDIF (P) is active once again. Once the switchover has completed, the DNS makes PDIF (P) live on the network
and calls are again sent to PDIF (P).
that PDIF (P) is active once again. Once the switchover has completed, the DNS makes PDIF (P) live on the network
and calls are again sent to PDIF (P).
Step 5
At this point the upgrade is complete and the PDIF (B) can be reconfigured to upgrade another primary PDIF.
Software Upgrade Process