ZyXEL Communications OLT2406, User Manual

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Chapter 6 Tutorials
OLT2406 User’s Guide
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Connect your DHCP server to port 10 and a computer (as DHCP client) to either port 11 or 12. The
computer should be able to get an IP address from the DHCP server. If you put the DHCP server on port
11 or 12, the computer will not able to get an IP address.
10
To check if DHCP snooping works, go to Advanced Application > IP Source Guard , you should see an IP
assignment with the type DHCP-Snooping as shown.
Figure 50 Tutorial: Check the Binding If DHCP Snooping Works
You can also telnet or log into the OLT’s console. Use the command “
show dhcp snooping binding
”
to see the DHCP snooping binding table as shown next.
6.3 How to Use DHCPv4 Relay on the OLT
This tutorial describes how to configure your OLT to forward DHCP client requests to a specific DHCP
server. The DHCP server can then assign a specific IP address based on the information in the DHCP
requests.
6.3.1 DHCP Relay Tutorial Introduction
In this example, you have configured your DHCP server (192.168.2.3) and want to have it assign a
specific IP address (say 172.16.1.18) to DHCP client
A based on the system name, VLAN ID and port
number in the DHCP request. Client A connects to the OLT’s port 2 in VLAN 102.
Figure 51 Tutorial: DHCP Relay Scenario
sysname# show dhcp snooping binding
MacAddress IpAddress Lease Type VLAN Port
----------------- --------------- ------------ ------------- ---- -----
00:02:00:00:00:1c 10.10.1.16 6d23h59m20s dhcp-snooping 100 11
Total number of bindings: 1