Discovery; Connectivity - Dell FORCE10 Open Automation Configuration

50 | Virtual Server Networking

Discovery

The discovery process starts after you enter the
and ends 10 minutes after connectivity is established between the switch and
hypervisor. If no connectivity is established, the switch attempts to connect for three
minutes and then stops. Refer to
After you enable the link between a switch and a hypervisor, the switch uses a
discovery mechanism to learn VMAC and VLAN information from the hypervisor.
The discovery process also starts in the following conditions:
• You enter the
The discovery process resumes on the individual port only, not on all enabled
ports.
• You enter the
mode for a specified type of hypervisor connection. The discovery process is
resumed on all enabled ports.
• An update arrives from a hypervisor. The discovery process resumes on all
VSN-enabled ports.
In order for a switch to learn VLAN information from a hypervisor:
• Incoming traffic must be received on the VSN-enabled ports.
• There must be at least one VMAC configured on the hypervisor so that the VCAP
table can capture the VMAC entries for each VSN-enabled port.
The following log messages are displayed when the discovery process is interrupted
and when it starts again.
Message 1
Nov 28 11:34:19: %STKUNIT0-M:CP %VSNMGR-5-VSN_DISCOVERY_SUSPENDED:
Hypervisor macs not seen on Te 0/25. Discovery suspended.
Message 2
Nov 28 11:40:36: %STKUNIT0-M:CP %VSNMGR-5-VSN_DISCOVERY_RESUMED: Detected
config change in Hypervisor. Discovery of Hypervisor macs resumed on Te 0/25.

Connectivity

If a network server is not reachable, a log message is displayed and the VSN agent
tries periodically to establish the connection with the hypervisor. The initial log
message is:
Message 3
Xen-Citrix:Connection error for hypervisor testing:LOGIN FAILURE
Connectivity
and
shutdown no shutdown
and
disable no disable
no disable command on the interface
for more details on this process.
commands on a VSN-enabled port.
commands in hypervisor configuration