3Com Switch 4800G 24-Port - Page 152

152 CHAPTER 16: PORT CORRELATION CONFIGURATION
n
If you set storm suppression ratios in Ethernet port view or port group view
repeatedly for an Ethernet port that belongs to a port group, only the latest
settings take effect.
Setting the Interval for
Collecting Ethernet Port
Statistics
Follow these steps to configure the interval for collecting port statistics:
Enabling Forwarding of
Jumbo Frames
Due to tremendous amount of traffic occurring in Ethernet, it is likely that some
frames might have a frame size greater than the standard Ethernet frame size. By
allowing such frames (called jumbo frames) to pass through Ethernet ports, you
can forward frames with a size greater than the standard Ethernet frame size and
yet still within the specified parameter range.
You can set the jumbo frame length in Ethernet port view or port group view.
■ If you set the jumbo frame length in Ethernet port view, the configuration
takes effect only on the current port.
■ If you set the jumbo frame length in port group view, the configuration takes
effect on all ports in the port group.
Follow these steps to enable the forwarding of jumbo frames:
Configure multicast storm
suppression ratio
multicast-suppression { ratio
| pps max-pps }
Optional
By default, all multicast traffic
is allowed to pass through a
port, that is, multicast traffic
is not suppressed.
Configure unknown unicast
storm suppression ratio
unicast-suppression { ratio |
pps max-pps }
Optional
By default, all unknown
unicast traffic is allowed to
pass through a port, that is,
unknown unicast traffic is not
suppressed.
To do… Use the command… Remarks
To do… Use the command… Remarks
Enter system view system-view -
Configure the interval for
collecting port statistics
interface interface-type
interface-number
Optional
By default, the interval for
collecting port statistics is 300
seconds.
flow-interval interval
To do… Use the command… Remarks
Enter system view system-view -
Enter the
corresponding
view
Enter port-group port-group { manual
port-group-name |
aggregation agg-id }
Use either approach.
Enter Ethernet
port view
interface interface-type
interface-number
Set the maximum frame length
allowed on an Ethernet port to
9212 bytes
jumboframe enable By default, the maximum
frame length allowed on an
Ethernet port is 9212 bytes.