Setting The Statistics Polling Interval; Enabling Ethernet Interface Loopback Detection - HP A5830 Configuration Manual

Step...
2. Enter Ethernet interface
view or port group view
3. Set the broadcast
suppression threshold ratio
4. Set the multicast
suppression threshold ratio
5. Set the unknown unicast
suppression threshold ratio
For an Ethernet interface that belongs to a port group, if you set a traffic suppression threshold for the
interface in both Ethernet interface view and port group view, the threshold configured last takes effect.

Setting the statistics polling interval

To view the interface statistics collected in the last polling interval, use the display interface command.
To clear interface statistics, use the reset counters interface command.
To set the statistics polling interval globally or on an Ethernet interface:
Step
1. Enter system view
2. Enter Ethernet interface view
3. Set the
interval
interface

Enabling Ethernet interface loopback detection

If a port receives a packet that it sent, a loop occurs. Loops can cause broadcast storms. The purpose of
loopback detection is to detect loops on a port.
Enable loopback detection to detect loops on an interface and, if the interface supports the loopback-
detection action command, configure the protective action to take on the receiving interface When a loop
is detected, for example, to shut down the interface. Depending on whether a protective action is
configured, the switch takes the actions in
Command...

Enter Ethernet interface view:
interface interface-type interface-
number

Enter port group view:
port-group manual port-group-name
broadcast-suppression { ratio | pps
max-pps | kbps max-kbps }
multicast-suppression { ratio | pps
max-pps | kbps max-kbps }
unicast-suppression { ratio | pps max-
pps | kbps max-kbps }
Command...
system-view
interface interface-type interface-
number
statistics polling
on the Ethernet
flow-interval interval
Table 1 to alleviate the impact of the loop condition.
9
Remarks
Use either command
To configure storm suppression
on an Ethernet interface, enter
Ethernet interface view
To configure storm suppression
on a group of Ethernet
interfaces, enter port group
view
Optional
By default, all broadcast traffic
is allowed to pass through
Optional
By default, all multicast traffic is
allowed to pass through
Optional
By default, all unknown unicast
traffic is allowed to pass
through
Remarks
—
—
Optional
The default interface statistics
polling interval is 300 seconds