- Confirm that the source cluster can ping the target cluster.
- Confirm that a traceroute can be completed to the target cluster.
- Test to confirm that TCP ports 5666, 5667, 2097, 2098, 3147, and 3148 are open on your network by running the following command from the OneFS command-line interface on either the source or the target cluster:
telnet <IP_address> <port_number>
If the event persists, gather logs, and then contact EMC Isilon Technical Support for additional troubleshooting. For instructions, see Gathering cluster logs.