Diagnostics
[ Diagnostics > System > IP Address Conflict Detection ]
259
RM GUI GRS
Release
8.0
09/2019
6.2.4
IP Address Conflict Detection
[ Diagnostics > System > IP Address Conflict Detection ]
Using the
IP Address Conflict Detection
function the device verifies that its IP address is unique in the
network. For this purpose, the device analyzes received ARP packets.
In this dialog you specify the procedure with which the device detects address conflicts and specify
the required settings for this.
The device displays detected address conflicts in the table.
When the device detects an address conflict, the status LED of the device flashes red 4 times.
Operation
Operation
Enables/disables the
IP Address Conflict Detection
function.
Possible values:
On
(default setting)
The
IP Address Conflict Detection
function is enabled.
The device verifies that its IP address is unique in the network.
Off
The
IP Address Conflict Detection
function is disabled.
Configuration
Detection mode
Specifies the procedure with which the device detects address conflicts.
Possible values:
active and passive
(default setting)
The device uses active and passive address conflict detection.
active
Active address conflict detection. The device actively helps avoid communicating with an IP
address that already exists in the network. The address conflict detection begins as soon as you
connect the device to the network or change its IP parameters.
–
The device sends 4 ARP probe data packets at the interval specified in the
Detection delay
[ms]
field. If the device receives a response to these data packets, then there is an address
conflict.
–
If the device does not detect an address conflict, then it sends 2 gratuitous ARP data packets
as an announcement. The device also sends these data packets when the address conflict
detection is disabled.
–
If the IP address already exists in the network, then the device changes back to the
previously used IP parameters (if possible).
If the device receives its IP parameters from a DHCP server, then it sends a DHCPDECLINE
message back to the DHCP server.
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