Cisco Cisco Expressway Maintenance Manual
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
remote syslog server to which the logs of all peers can be sent. This allows you to have a global view of
activity across all peers in the cluster. See the
Log level and the list of Remote syslog servers are specific to each peer. We recommend that you set up a
remote syslog server to which the logs of all peers can be sent. This allows you to have a global view of
activity across all peers in the cluster. See the
section for further details.
Security certificates (Maintenance > Security certificates)
The trusted CA certificate, server certificate and certificate revocation lists (CRLs) used by the Expressway
must be uploaded individually per peer.
must be uploaded individually per peer.
Administration access (System > Administration)
The following system administration access settings are specific to each peer:
n
Serial port / console
n
SSH service
n
Web interface (over HTTPS)
n
Redirect HTTP requests to HTTPS
n
Automated protection service
Option keys (Maintenance > Option keys)
Option keys are specific to each peer. Each peer must have an identical set of option keys installed, but you
must purchase these separately for each peer in the cluster. However, this does not apply to rich media
session and TURN relay licenses; these licenses can be installed on any cluster peer and are available for
use by any peer in the cluster.
must purchase these separately for each peer in the cluster. However, this does not apply to rich media
session and TURN relay licenses; these licenses can be installed on any cluster peer and are available for
use by any peer in the cluster.
Sharing bandwidth across peers
When clustering has been configured, all peers share the bandwidth available to the cluster.
section.
Cisco Expressway Administrator Guide (X8.5)
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Clustering and peers
Managing clusters and peers