SNR S2989G-48TX-RPS — настройка IP-сервисов и DHCP на сетевом оборудовании [196/553]

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S2989G-24TX Operation Manual

Chapter 3 IP services Configuration

3-34

The MAC of the DHCP server is 00-24-8c-01-05-90, the IP address of 192.168.10.2

needs to be distributed statically, the DHCP server is connected to e 1/0/1. The MAC of

the specific server (Other Server) is 00-24-8c-01-05-80, the IP address of 192.168.10.3

needs to be distributed statically, the other server is connected to e 1/0/2. The MAC of the

PC client is 00-24-8c-01-05-96, the IP address is gotten dynamically through the DHCP.

The PC is connected to e 1/0/3. The layer3 interface of vlan 10 is 192.168.10.1, the MAC

is 00-03-0F-01-02-03.

The configuration is as below:

ip arp inspection vlan 10

ip dhcp snooping enable

ip dhcp snooping vlan 10

Interface Ethernet1/0/1

description connect DHCP Server

switchport access vlan 10

ip dhcp snooping trust

ip arp inspection limit-rate 50

ip arp inspection trust

Interface Ethernet1/0/2

description connect to Other Server

switchport access vlan 10

ip arp inspection limit-rate 50

Interface Ethernet1/0/3

description connect to PC

switchport access vlan 10

ip arp inspection limit-rate 50

interface Vlan10

ip address 192.168.10.1 255.255.255.0

Explanation: In this case, there are two method of static and dynamic using of DAI.

The ARP packets from the untrusted port will all be transmitted to DHCP monitoring

binding table for checking if they are lawful.

After the client gotten the IP address dynamically, it can be modified to be the static IP

address, but it must be the same IP address to the dynamic one. If modifies to be other IP

address, it cannot be accessed in the network and the switch can send the warning about