Raisecom ISCOM2600G-HI (A) Series - Figure 6-1 DHCP Typical Networking; Figure 6-2 Structure of DHCP Packet; Table 6-1 Fields of a DHCP Packet

Raisecom
ISCOM2600G-HI (A) Series Configuration Guide
6 DHCP
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
252
Figure 6-1 DHCP typical networking
DHCP ensures rational allocation, avoid waste, and improve the utilization rate of IP
addresses on the entire network.
Figure 6-2 shows the structure of a DHCP packet. The DHCP packet is encapsulated in a UDP
data packet.
Figure 6-2 Structure of DHCP packet
Table 6-1 describes fields of DHCP packets.
Table 6-1 Fields of a DHCP packet
Field
Length
Description
OP
1
Packet type

1: a request packet

2: a reply packet
Hardware type
1
Hardware address type of a DHCP client
Hardware length
1
Hardware address size of a DHCP client
Hops
1
Number of DHCP hops passed by a DHCP packet
This field increases by 1 every time the DHCP request
packet passes a DHCP hop.