Cisco Cisco Expressway Maintenance Manual
1.
On your local Expressway (or, if the local Expressway is a cluster, on the master peer), create a zone of the
appropriate type. This zone will represent the connection to the cluster.
appropriate type. This zone will represent the connection to the cluster.
2.
In the Location section, enter the IP address or FQDN of each peer in the remote cluster in the Peer 1 to Peer
6 address fields.
6 address fields.
Note that:
■
Ideally you should use IP addresses in these fields. If you use FQDNs instead, each FQDN must be different
and must resolve to a single IP address for each peer.
and must resolve to a single IP address for each peer.
■
The order in which the peers in the remote Expressway cluster are listed here does not matter.
■
Whenever you add an extra Expressway to a cluster (to increase capacity or improve redundancy, for
example) you will need to modify any Expressways which neighbor to that cluster to let them know about the
new cluster peer.
example) you will need to modify any Expressways which neighbor to that cluster to let them know about the
new cluster peer.
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.
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:
■
network access problems
■
Expressway unit is powered down
■
incorrectly configured IP addresses
■
incorrectly configured IPsec keys - ensure each peer is configured with the same Cluster pre-shared key
value
value
■
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.
Expressway.
Caution:
Never issue this command on the master Expressway, otherwise all configuration for the cluster will be lost.
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Cisco Expressway Administrator Guide