1-13
Description
Use the
port-security ntk-mode
command to configure the NTK feature on the port.
Use the
undo port-security ntk-mode
command to restore the default setting.
Be default, NTK is disabled on a port, namely all frames are allowed to be sent.
By checking the destination MAC addresses of the data frames to be sent from a port, the NTK feature
ensures that only successfully authenticated devices can obtain data frames from the port, thus
preventing illegal devices from intercepting network data.
Examples
# Set the NTK feature to
ntk-withbroadcasts
on Ethernet 1/0/1.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] port-security enable
[Sysname] interface Ethernet 1/0/1
[Sysname-Ethernet1/0/1] port-security ntk-mode ntk-withbroadcasts
port-security oui
Syntax
port-security oui OUI-value index index-value
undo port-security oui index index-value
View
System view
Parameters
OUI-value
: OUI value. You can input a 48-bit MAC address in the form of H-H-H for this argument and
the system will take the first 24 bits as the OUI value and ignore the rest.
index-value
: OUI index, ranging from 1 to 16.
The organizationally unique identifiers (OUIs) are assigned by the IEEE to different vendors. Each OUI
uniquely identifies an equipment vendor in the world and is the higher 24 bits of a MAC address.
Summary of Contents for 5500-EI PWR
Page 43: ...2 6...
Page 76: ...1 17...
Page 228: ...ii stp transmit limit 1 44 vlan mapping modulo 1 45 vlan vpn tunnel 1 46...
Page 477: ...5 24 Sysname vlan 2 Sysname vlan2 service type multicast...
Page 503: ...2 3 System View return to User View with Ctrl Z Sysname dot1x url http 192 168 19 23...
Page 519: ...iii...
Page 597: ...2 2 security policy server 192 168 0 1 user name format without domain...
Page 648: ...1 9 Examples Clear static ARP entries Sysname reset arp static...
Page 663: ...4 3 Sysname resilient arp interface vlan interface 2...
Page 767: ...1 28 From 12 00 Jan 1 2008 to 12 00 Jun 1 2008...
Page 1111: ...ii xmodem get 3 18...
Page 1314: ...A 44 Z...