HP StorageWorks 2.32 Edge Switch - Manual (Page 107)

HA-Fabric Manager user guide 107
to the director or switch port and cannot connect to other devices in the zone with Switch Binding
enabled.
Port fencing
Port Fencing is a policy-based feature that allows the user to set thresholds on port events. If the
port generates more events in a user specified time period than the user thinks he should tolerate,
the Port Fencing feature blocks the port, disabling transmit and receive traffic until the user has a
chance to investigate, solve the problem, and manually unblock the port.
Port fencing dialog box
The Port Fencing dialog box ( Figure 66 ) is accessed from the Configure menu by clicking the Port
Fencing option. The Port Fencing dialog box displays the existing policies that are discovered on
HP directors and switches running E/OS 7.0fj. Use this dialog to name a policy, set the limit and
period and select objects to which to apply the policy. If a switch does not support Port Fencing,
the ISL threshold field displays a Port Fencing Not Supported message.
Figure 66 Port Fencing dialog box
Open trunking
Open trunking is a keyed feature that monitors the data flows on ISLs (from a receive port to a
target domain) and periodically reroutes data from congested links to lightly loaded links. Open
trunking makes the most efficient use of redundant ISLs between switches.
Load balancing does not require user configuration, other than to enable open trunking. However,
you can modify default settings for congestion thresholds (per port).
You do not need to manually configure ISLs into trunk groups of redundant links where data can be
off-loaded. Open trunking identifies candidate links for rerouting and maintains the links
automatically.