Zyxel IES-6000 [89/1156] Example dhcp snooping

Zyxel IES-5106 [89/1156] Example dhcp snooping
Chapter 4 Access Control List Screens
Management Switch Card User’s Guide
89
4.4.2 Example: DHCP Snooping
The following figures show the DHCP snooping configuration for computers A and B in the example
network shown in Figure 28 on page 85. In this example, the line card in slot 3 has computer A
connected to DSL port 1 and computer B connected to DSL port 10.
Figure 31 DHCP Snooping: Computer A Example
Figure 32 DHCP Snooping: Computer B Example
4.5 LAN 2 LAN Configuration
A subscriber with a LAN-to-LAN connection may want the DHCP server at one site to give IP
addresses to another site’s computers. LAN 2 LAN allows you to set whether or not a DHCP server
connected to a subscriber port is permitted to receive and send traffic through the IES. The remote
DHCP clients could even be connected to another DSLAM as in the following example. Here a
company has a LAN-to-LAN connection and wants both computers A and B to get IP addresses from
DHCP server D. Enabling LAN 2 LAN on the DSL port to which DHCP server D is connected allows
DHCP request packets from computer B to go to DHCP server D and DHCP reply packets from D to
go to computer B.

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