H3C S3100 Series

1-3
System View: return to User View with Ctrl+Z.
[Sysname] interface Ethernet 1/0/11
[Sysname-Ethernet1/0/11] arp detection trust
arp protective-down recover enable
Syntax
arp protective-down recover enable
undo arp protective-down recover enable
View
System view
Parameters
None
Description
Use the arp protective-down recover enable command to enable the port state auto-recovery
function on the switch.
Use the undo arp protective-down recover enable command to disable the port state auto-recovery
function of a switch.
With this function enabled, the switch can automatically bring up a port that has been shut down due to
an excessive ARP packet receiving rate after a specified period.
By default, the port state auto-recovery function is disabled.
Note that among S3100 series switches, only S3100-EI series switches support the two commands.
Examples
# Enable the port state auto-recovery function of the switch.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] arp protective-down recover enable
arp protective-down recover interval
Syntax
arp protective-down recover interval interval
undo arp protective-down recover interval
View
System view
Parameters
interval: Recovery time (in seconds) of a port which is shut down due to an excessive ARP packet
receiving rate. The effective range is 10 to 86,400.