Command Reference Guide

224 ● ip source-address-check 3Com Router 5000 Family and Router 6000 Family
Command Reference
ip source-address-check
Purpose Use the ip source-address-check command to enable source
address check function for IP packets.
Use the undo ip source-address check command to disable
source address check function for IP packets.
Syntax ip source-address-check
undo ip source-address-check
Parameters None
Default By default, the source address check function for IP packets
is disabled.
Example Enable source address check function for an IP packet.
[3Com] ip source-address-check
View This command can be used in the following views:
■ System view
Description When the source address check function for IP packets is
enabled, the system checks the validity of the source address
of the IP packets. If the source address is not an A class, B
class or C class address, the packet will be discarded.