183
Displaying and maintaining port security
To do…
Command…
Remarks
Display port security configuration
information, operation
information, and statistics about
one or more ports or all ports
display port-security
[
interface
interface-list
] [
|
{
begin
|
exclude
|
include
}
regular-
expression
]
Available in any view
Display information about secure
MAC addresses
display port-security mac-address
security
[
interface
interface-type
interface-number
] [
vlan
vlan-id
]
[
count
] [
|
{
begin
|
exclude
|
include
}
regular-expression
]
Available in any view
Display information about
blocked MAC addresses
display port-security mac-address
block
[
interface
interface-type
interface-number
] [
vlan
vlan-id
]
[
count
] [
|
{
begin
|
exclude
|
include
}
regular-expression
]
Available in any view
Port security configuration examples
Configuring the autoLearn mode
Network requirements
See
. Configure port GigabitEthernet 1/0/1 on Router, as follows:
•
Allow up to 64 users to access the port without authentication.
•
Permit the port to learn and add MAC addresses as secure MAC addresses.
•
After the number of secure MAC addresses reaches 64, the port stops learning MAC addresses. If
any frame with an unknown MAC address arrives, intrusion protection starts and the port shuts
down and stays silent for 30 seconds.
Figure 75
Network diagram for configuring the autoLearn mode
Configuration procedure
1.
Configure port security.
# Enable port security.
<Router> system-view
[Router] port-security enable
