Setting The Statistics Polling Interval; Enabling Automatic Negotiation For Speed Downgrading; Configuring Storm Suppression - H3C S5560S-EI Series Configuration Manual

Step
2.
Enter Ethernet interface
view.
3.
Enable auto power-down on
the Ethernet interface.

Setting the statistics polling interval

Step
1.
Enter system view.
2.
Enter Ethernet interface
view.
3.
Set the statistics polling
interval for the Ethernet
interface.
To display the interface statistics collected in the last statistics polling interval, use the display
interface command.

Enabling automatic negotiation for speed downgrading

Perform this task to enable interfaces at two ends of a link to automatically negotiate about
downgrading their speed when the following conditions exist:
•
The interfaces automatically negotiate a speed of 1000 Mbps.
•
The interfaces cannot operate at 1000 Mbps because of link restrictions.
To enable automatic negotiation for speed downgrading:
Step
1.
Enter system view.
2.
Enter Ethernet interface
view.
3.
Enable automatic
negotiation for speed
downgrading.

Configuring storm suppression

The storm suppression feature ensures that the size of a particular type of traffic (broadcast,
multicast, or unknown unicast traffic) does not exceed the threshold on an interface. When the
broadcast, multicast, or unknown unicast traffic on the interface exceeds this threshold, the system
discards packets until the traffic drops below this threshold.
Both storm suppression and storm control can suppress storms on an interface. Storm suppression
uses the chip to suppress traffic. Storm suppression has less impact on the device performance than
storm control, which uses software to suppress traffic.
Configuration restrictions and guidelines
When you configure storm suppression, follow these restrictions and guidelines:
Command
interface interface-type
interface-number
port auto-power-down
Command
system-view
interface interface-type
interface-number
flow-interval interval
Command
system-view
interface interface-type
interface-number
speed auto downgrade
8
Remarks
N/A
By default, auto power-down is
disabled on an Ethernet interface.
Remarks
N/A
N/A
By default, the statistics polling
interval is 300 seconds.
Remarks
N/A
N/A
By default, automatic negotiation
for speed downgrading is
enabled.