SNR S2989G-48TX-DC [223/553] Task list

S2989G-24TX Operation Manual

Chapter 3 IP services Configuration

3-61

3.16.4.2 DHCP Snooping Troubleshooting Help

If there is any problem happens when using DHCP Snooping function, please check if

the problem is caused by the following reasons:

⚫ Check that whether the global DHCP Snooping is enabled;

⚫ If the port does not react to invalid DHCP Server packets, please check that whether

the port is set as a non-trusted port of DHCP Snooping.

3.17

DHCP option 60 and option 43

3.17.1

Introduction to DHCP option 60 and option 43

DHCP server analyzes DHCP packets from DHCP client. If packets with option 60, it

will decide whether option 43 is returned to DHCP client according to option 60 of packets

and configuration of option 60 and option 43 in DHCP server address pool.

Configure the corresponding option 60 and option 43 in DHCP server address pool:

1. Address pool configured option 60 and option 43 at the same time. The received DHCP

packet with option 60 from DHCP client, if it matches with option 60 of DHCP server

address pool, DHCP client will receive the option 43 configured in the address pool, or

else do not return option 43 to DHCP client.

2. Address pool only configured option 43, it will match with any option 60. If the received

DHCP packet with option 60 from DHCP client, DHCP client will receive the option 43

configured in the address pool.

3. Address pool only configured option 60, it will not return option 43 to DHCP client.

3.17.2

DHCP option 60 and option 43 Configuration

Task List

1. Basic DHCP option 60 and option 43 configuration

Command

Explanation

Address pool configuration mode

option 60 ascii LINE

Configure option 60

character string with ascii

format in ip dhcp pool mode.

option 43 ascii LINE

Configure option 43

character string with ascii