Allied Telesis SwitchBlade x3100 Series Manual page 742

Introduction
= Links
6
1
= Telesyn 9000
C
A
= vlan_video
20
= vlan_data
40
= Inband_MGMT
60
0.3
60
40
20
2.1
1
1
Set top box Set top box
7.2.2.1 Client Requesting an IP Address (Dynamically Allocated)
The DHCP relay agent functionality allows the router to forward the request to a DHCP server on behalf of a
DHCP client on the same subnet as the router interface. When the DHCP Relay Agent receives a DHCP
packet from a client (configured as a CUSTOMER interface), the following sequence occurs:
The packet is discarded for the following conditions; otherwise it is forwarded.
1.
Option 82 has already been added to the packet.
•
7-4
Software Reference for SwitchBlade x3100 Series Switches (Network Management)
6
3
B
PC
DHCP_logical_VLAN_60
FIGURE 7-2
0.3
60
A
= XE Interface
4
C
= GE Interface
= Physical Link (Network)
= Physical Link (Customer)
= Inband_MGT VLAN (60)
DHCP Relay Agent
DHCP Relay Agent
= All VLANs map to one
DHCP Instance (with one
set of servers)
5
0.1
C
60
20
40
6.1
2
Set top box Set top box
PC