3Com 4210G Series, Руководство по настройке, Страница: 51 / 1133

1-12
z
For network stability sake, configure the interval for generating traffic statistics to a value that is
not shorter than the default.
z
The storm constrain function, after being enabled, requires a complete statistical period (specified
by the storm-constrain interval command) to collect traffic data, and analyzes the data in the next
period. Thus, it is normal that a period longer than one statistic period is waited for a control action
to happen if you enable the function while the packet storm is present. However, the action will be
taken within two periods.
z
The storm constrain function is applicable to multicast packets, and broadcast packets; and you
can specify the upper and lower threshold for any of the three types of packets.
Displaying and Maintaining an Ethernet Interface
To do… Use the command… Remarks
Display the current state of an
interface and the related
information
display interface
[
interface-type
[
interface-number
] ]
Available in any view
Display the summary of an
interface
display brief interface
[
interface-type
[
interface-number
] ] [
|
{
begin
|
exclude
|
include
}
regular-expression
]
Available in any view
Display information about
discarded packets on an
interface
display packet-drop interface
[
interface-type
[
interface-number
] ]
Available in any view
Display summary information
about discarded packets on all
interfaces
display packet-drop
summary
Available in any view
Clear the statistics of an
interface
reset counters interface
[
interface-type
[
interface-number
] ]
Available in user view
Clear the statistics of discarded
packets on an interface
reset packet-drop interface
[
interface-type
[
interface-number
] ]
Available in user view
Display the Combo ports and
the corresponding
optical/electrical ports
display port combo
Available in any view
Display the information about a
manual port group or all the
port groups
display port-group manual
[
all
|
name port-group-name
]
Available in any view
Display the information about
the loopback function
display loopback-detection
Available in any view
Display the information about
storm constrain
display storm-constrain
[
broadcast
|
multicast
]
[
interface interface-type
interface-number
]
Available in any view