Raisecom
ISCOM2600G-HI (A) Series Configuration Guide
6 DHCP
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
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Raisecom(config)#interface gigaethernet 1/1/3
Raisecom(config-gigaethernet1/1/3)#ip dhcp information option circuit-id
raisecom
Checking results
Use the
show ip dhcp snooping
command to show configurations of DHCP Snooping.
Raisecom#show ip dhcp snooping
DHCP Snooping: Enabled
DHCP Option 82: Enabled
Port vlan Enabled Status Trusted Status
Option82 Vlanlist
-------------------------------------------------------------------------
------------------------
gigaethernet1/1/1 -- enabled yes 1-
4094
gigaethernet1/1/2 -- enabled no 1-
4094
gigaethernet1/1/3 -- enabled no 1-
4094
gigaethernet1/1/4 -- enabled no 1-
4094
gigaethernet1/1/5 -- enabled no 1-
4094
gigaethernet1/1/6 -- enabled no 1-
4094
……
6.4 DHCP Options
6.4.1 Introduction
DHCP transmits control information and network configuration parameters through Option
field in packet to dynamically assign addresses to provide abundant network configurations
for clients. DHCP has 255 types of options, with the final option as Option 255. Table 6-3 lists
frequently used DHCP options.
Table 6-3
Common DHCP options
Options
Description
3
Router option, used to assign the gateway address of DHCP clients
6
DNS server option, used to specify the IP address of the DNS server assigned
for DHCP clients