Specifications

Reference Guide
132 VMware, Inc.
Public Network Connectivity displays the status of Principal (Public) network monitoring and or Split-brain
Avoidance if configured on the server pair.
To configure VMware Channel communications, click Advanced and click the Configuration tab.
Configuring Public Network Connection Checks
Use the Configuration page to make adjustments to the Principal (Public) network monitoring features, the
VMware Channel heartbeat features, the disk usage and server time difference.
Enable or disable Principal (Public) network monitoring by either selecting or clearing the Failover if Active
Server’s Public Network Connection is Lost check box. This feature integrates the polling of particular
waypoints around the network through the Principal (Public) connection of the Active server to ensure
connectivity with the Principal (Public) network. By default, it selects the IP addresses of the default gateway,
the primary DNS server, and the Global Catalog server.
If one or more of the waypoints are co-located on a physical machine resulting in duplicate IP addresses, you
can manually specify different waypoints. To specify a manual target for the Principal (Public) network
checking, clear an Auto Select check box and manually overtype the IP address with the required target
address.
In a WAN environment, the target addresses for Principal (Public) network monitoring on the Secondary
server can be different from those selected on the Primary server. To override the discovered selections, clear
the Auto Select check box and manually specify the target address.
Principal (Public) Network Monitoring operates when the active server effectively pings the target addresses
at regular time intervals. The time interval is set by default to every 20 seconds but you can increase or decrease
the frequency as required.
Each target has by default 5 seconds to respond. On slower networks where latency and network collisions are
frequent, you can increase the response time. Adjust the Timeout for Ping Echoes value.
If any target fails to respond within the stipulated timeout, increase the polling interval to the timeout value
until you receive a response. Then decrease the polling interval to the default time interval specified.