HP Virtual Connect for c-Class BladeSystem Version 3.51/3.60 User Guide

Virtual Connect networks 89
When the network loop protection feature is enabled, any probe frame or other supported loop detection
frame received on a downlink port is considered to be causing the network loop, and the port is disabled
immediately until an administrative action is taken. The administrative action involves resolving the loop
condition and clearing the loop protection error condition. The "loop detected" status on a port can be
cleared by one of the following administrative actions:
• Restart loop detection by issuing "reset" loop protection from the CLI or GUI
• Unassign all networks from the port in "loop detected" state
The SNMP agent supports trap generation when a loop condition is detected or cleared.
Virtual Connect provides the ability to enable or disable network loop protection. The feature is enabled by
default and applies to all VC-Enet modules in the domain. Network loops are detected and server ports can
be disabled even prior to any enclosure being imported.
A loop-protect reset command resets and restarts loop detection for all server ports in a “loop-detected” error
condition.
Define Ethernet Network screen
The Define Ethernet Network screen is accessible to all users with network privileges from the Define a
Network link on the Virtual Connect Manager home page or by selecting Ethernet Network on the Define
pull-down menu.
The following table describes the fields within the Define Ethernet Network screen.
Field name Description
Network
Network Name
Name of the network
Color
A network can have a user-defined color to group and identify the network