Cisco Cisco Expressway
Specifying peer-specific items
Most items of configuration are applied via the master peer to all peers in a cluster. However, the following
items (marked with a
items (marked with a
†
on the web interface) must be specified separately on each cluster peer.
Note: You should not modify configuration data that applies to all peers on any peer other than the master
peer. At best it will result in the changes being overwritten from the master; at worst it will cause cluster
replication to fail.
peer. At best it will result in the changes being overwritten from the master; at worst it will cause cluster
replication to fail.
Cluster configuration (System > Clustering)
The list of Peer IP addresses (including the peer's own IP address) that make up the cluster has to be
specified on each peer and they must be identical on each peer.
specified on each peer and they must be identical on each peer.
The Cluster name and Cluster pre-shared key have to be specified on each peer and must be identical for
all peers.
all peers.
Ethernet speed (System > Network interfaces > Ethernet)
The Ethernet speed is specific to each peer. Each peer may have slightly different requirements for the
connection to their Ethernet switch.
connection to their Ethernet switch.
IP configuration (System > Network interfaces > IP)
LAN configuration is specific to each peer.
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Each peer must have a different IPv4 address and a different IPv6 address.
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IP gateway configuration is peer-specific. Each peer can use a different gateway.
Note that the IP protocol is applied to all peers, because each peer must support the same protocols.
IP static routes (System > Network interfaces > Static routes)
Any static routes you add are peer-specific and you may create different routes on different peers if required.
If you want all peers in the cluster to be able to use the same static route, you must create the route on each
peer.
If you want all peers in the cluster to be able to use the same static route, you must create the route on each
peer.
System name (System > Administration)
The System name must be different for each peer in the cluster.
DNS servers and DNS host name (System > DNS)
DNS servers are specific to each peer. Each peer can use a different set of DNS servers.
The System host name and Domain name are specific to each peer.
NTP servers and time zone (System > Time)
The NTP servers are specific to each peer. Each peer may use one or more different NTP servers.
The Time zone is specific to each peer. Each peer may have a different local time.
SNMP (System > SNMP)
SNMP settings are specific to each peer. They can be different for each peer.
Logging (Maintenance > Logging)
The Event Log and Configuration Log on each peer only report activity for that particular Expressway. The
Log level and the list of Remote syslog servers are specific to each peer. We recommend that you set up a
Log level and the list of Remote syslog servers are specific to each peer. We recommend that you set up a
Cisco Expressway Cluster Creation and Maintenance Deployment Guide (X8.5.2)
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Specifying peer-specific items