Cisco Cisco Expressway Maintenance Manual
Troubleshooting cluster replication problems
Cluster replication can fail for a variety of reasons. This section describes the most common problems and
how to resolve them.
how to resolve them.
Some peers have a different master peer defined
1. For each peer in the cluster, go to the
System > Clustering
page.
2. Ensure each peer identifies the same Configuration master.
Unable to reach the cluster configuration master peer
The Expressway operating as the master peer could be unreachable for many reasons, including:
n
network access problems
n
Expressway unit is powered down
n
incorrectly configured IP addresses
n
incorrectly configured IPsec keys - ensure each peer is configured with the same Cluster pre-shared key
value
value
n
different software versions
"Manual synchronization of configuration is required" alarms are raised on peer Expressways
1. Log in to the peer as admin through the CLI (available by default over SSH and through the serial port).
2. Type xCommand ForceConfigUpdate.
This will delete the non-master Expressway configuration and force it to update its configuration from the
master Expressway.
master Expressway.
CAUTION:
never issue this command on the master Expressway, otherwise all configuration for the cluster
will be lost.
Cisco Expressway Administrator Guide (X8.5.1)
Page 142 of 399
Clustering and peers
Troubleshooting cluster replication problems