Configuration Guide
DHCP Snooping Configuration
Ruijie#
show ip dhcp snooping
Switch DHCP snooping status : ENABLE
DHCP snooping Verification of hwaddr status : ENABLE
DHCP snooping database write-delay time : 0 seconds
DHCP snooping option 82 status : ENABLE
DHCP snooping Support bootp bind status : DISABLE
Interface
Trusted Rate limit (pps)
----------------- ---------
---------------
GigabitEthernet 0/1 YES
unlimited
Caution
After this function is configured, DHCP relay option82 function configured in
the same device will be ineffective.
Writing the DHCP Snooping Database to Flash Periodically
By default, this function is disabled. DHCP Snooping provides a command to write the DHCP
Snooping database to the flash periodically in order to prevent loss of DHCP user information
when the device restarts due to an electricity failure.
Command
Description
Ruijie#
configure terminal
Enter the global configuration mode.
Ruijie(config)# [
no
]
ip dhcp snooping
database write-delay
[
time
]
Specify the interval at which the switch writes
the DHCP database to the flash.
time
: 600s to 86400s. The default value is 0.
The following example sets the interval at which the switch writes the DHCP databse to the
flash to 3600s:
Ruijie#
configure terminal
Ruijie(config)#
ip dhcp snooping database write-delay
3600
Ruijie(config)#
end
Caution
You need to set a proper time for writing to the flash since erasing and writing
to the flash frequently shortens its life. A shorter time helps to save the device
information more effectively. A longer time reduces the times of writing to the
flash and increases service life of flash.
Writing DHCP Snooping Database to Flash Manually
To prevent loss of DHCP user information when the device restarts due to an electricity failure,
the administrator can write the DHCP Snooping binding database to the flash manually.
Command
Description
Ruijie#
configure terminal
Enter the global configuration mode.
Содержание RG-S2900G-E Series
Страница 1: ...RG S2900G E Series Switch RGOS Configuration Guide Release 10 4 2b12 p1 ...
Страница 91: ...Configuration Guide Configuring PoE Configuration ...
Страница 133: ...Configuration Guide EEE Configuration ...
Страница 319: ...Configuration Guide QinQ Configuration ...
Страница 408: ......
Страница 409: ...IP Routing Configuration 1 Static Route Configuration ...
Страница 412: ......
Страница 413: ...Multicast Configuration 1 IGMP Snooping Configuration 2 MLD Snooping Configuration ...
Страница 621: ...Configuration Guide CPU Protection Configuration udp helper 180 4 dhcp client 180 4 lacp 180 4 ...
Страница 757: ......
Страница 758: ...ACL QoS Configuration 1 Access Control List Configuration 2 QoS Configuration ...
Страница 801: ...Reliability Configuration 1 RLDP Configuration 2 TPP Configuration 3 SEM Configuration ...
Страница 901: ...Configuration Guide ERSPAN Configuration ...
Страница 902: ...Web based Configuration 1 Web based Configuration ...