Airlive POE-GSH1602M handleiding
Handleiding
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14.8 DHCP Snooping
For sake of security, the network administrator may need to record the IP address of a
user surfing the Internet and to confirm the correspondence between the IP address
obtained from DHCP Server and the host’s MAC address.
Switch can record the user’s IP address through the secure DHCP relay at the network
layer.
Switch can monitor DHCP messages and record the user’s IP address through DHCP
Snooping at the data link layer. In addition, private DHCP Server in the network may
lead to wrong IP address for the user. To ensure that users obtain IP addresses through
legal DHCP Server, the DHCP Snooping security mechanism divides the ports into
Trust Port and Untrust Port.
Trust Port directly or indirectly connects legal DHCP Server. It forwards the
DHCP messages received to ensure the correct IP address for DHCP Client. Untrust
Port connects illegal DHCP Server. DHCPACK and DHCPOFFER messages received
from the DHCP Server on the Untrust Port will be discarded to prevent incorrect IP
addresses.
Typical Networking of DHCP Snooping
The following methods are used to obtain the IP address and user MAC address from
DHCP Server:
⚫ Snooping the DHCPREQUEST message
⚫ Snooping the DHCPACK message
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Productinformatie
| Merk | Airlive |
| Model | POE-GSH1602M |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 71337 MB |
