Error Message

The following errors are shown in the wac_A.txt log, assuming that there is a firewall restriction for ICMP packets to the remote DR site, the PROD cluster heartbeats are down, and the WAC on the PROD site will refuse heartbeat packes from the DR site. 

PROD wac_A.txt

VCS NOTICE V-16-3-18321 All heartbeats from cluster () to cluster () are down. will not accept connection from cluster () until at least one heartbeat to cluster () is alive

DR wac_A.txt 

VCS WARNING V-16-3-18325 Cluster () refused connection. This is because all heartbeats from cluster () to cluster () are currently down.

where:

• PROD refers to the production or primary site and cluster
• DR refers to the disaster recovery site and cluster
• WAC is the Wide Area Connector for the GCO

Firewall is blocking Port 14155/TCP/UDP

Applies To

GCO cluster with firewall affecting ICMP traffic

The Remote Cluster Status View at the remote site shows the Status of the remote cluster is Initing and the Heartbeat Status is "Icmp: UNKNOWN" (figure2).

Figure 2

Note: The cluster names and IP addresses listed above are examples only and should be replaced to match the configuration of the environment.

The GCO cluster heartbeat relies on the ping command to send Internet Control Message Protocol (ICMP) "echo requests" to the remote cluster and listens for ICMP "echo response" replies to validate that the clusters can communicate. The above issue occurs because the network at the primary site has a firewall enabled that is blocking ICMP requests.