ZyXEL Communications XS-3900-48F, User Manual

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Chapter 2 Tutorials
XS3900-48F User’s Guide
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6
Click the Save link in the upper right corner of the web configurator to save your configuration
permanently.
7
The DHCP server can then assign a specific IP address based on the DHCP request.
2.2.4 Troubleshooting
Check the client A’s IP address. If it did not receive the IP address 172.16.1.18, make sure:
1
Client A is connected to the Switch’s port 2 in VLAN 102.
2
You configured the correct VLAN ID, port number and system name for DHCP relay on both the
DHCP server and the Switch.
3
You clicked the Save link on the Switch to have your settings take effect.
2.3 How to Use PPPoE IA on the Switch
You want to configure PPPoE Intermediate Agent on the Switch (A) to pass a subscriber’s
information to a PPPoE server (S). There is another switch (B) between switch A and server S.
Switch B is connected to switch A. In this way, PPPoE server S can identify subscriber C and may
apply different settings to it.
Figure 6
Tutorial: PPPoE Intermediate Agentt Tutorial Overview
Note: For related information about PPPoE IA, see Section 29.3 on page 238 .
The settings in this tutorial are as follows:
Table 6
Settings in this Tutorial
SWITCH
PORT
CONNECTED
VLAN CIRCUIT-ID REMOTE-ID PPPOE IA PORT TRUSTED
A Port 5 (to C)
Port 12 (to B)
1
1
userC
N/A
00134900000A
N/A
Untrusted
Trusted
B Port 11 (to A)
Port 12 (to S)
1
1
N/A
N/A
N/A
N/A
Trusted
Trusted
A
B
C
S
Port 5 - Untrusted
Port 12 - Trusted
Port 11 - Trusted
Port 12 - Trusted