Netis ST3326(ST-3302) [75/118] Dhcp configuration

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The DHCP-snooping table only records information about clients that obtains IP address
dynamically through DHCP. If a fixed IP address is configured for a client, the IP address and MAC
address of the client cannot be recorded in the DHCP-snooping table. Consequently, this client
cannot pass the IP filtering of the DHCP-snooping table, thus it cannot access external networks.
To solve this problem, the switch supports the configuration of static binding table entries, that is,
the binding relationship between IP address, MAC address, and the port connecting to the client,
so that packets of the client can be correctly forwarded.
IP filtering
The switch can filter IP packets in the following two modes:
Filtering the source IP address in a packet. If the source IP address and the number of the
port that receives the packet are consistent with entries in the DHCP-snooping table or
static binding table, the switch regards the packet as a valid packet and forwards it;
otherwise, the switch drops it directly.
Filtering the source IP address and the source MAC address in a packet. If the source IP
address and source MAC address in the packet, and the number of the port that receives
the packet are consistent with entries in the DHCP-snooping table or static binding table,
the switch regards the packet as a valid packet and forwards it; otherwise, the switch drops
it directly.
8.5 DHCP
8.5.1 DHCP Configuration

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