3com 5500-ei pwr Guia De Referência

 

2-6 

By default, when the port state auto-recovery function is enabled, the recovery interval is 300 seconds. 

Note that: 

z 

You need to enable the port state auto-recovery feature before you can configure the 

auto-recovery interval.  

z 

If you use the arp protective-down recover interval command to modify the recovery time when 

the current port has been already shut down due to an excessive ARP packet receiving rate, the 

previously configured interval applies to the first port state recovery. Starting from the next state 

recovery, the new recovery interval will take effect.  

# Set the auto-recovery interval to 30 seconds. 

<Sysname> system-view 

System View: return to User View with Ctrl+Z. 

[Sysname] arp protective-down recover enable  

[Sysname] arp protective-down recover interval 30 

arp rate-limit rate  

Ethernet port view 

rate: Maximum ARP packet receiving rate on the port, in the range of 10 to 1,024 pps.  

Use the arp rate-limit command to specify the maximum ARP packet receiving rate on the port. If a rate 

is specified, exceeding packets will be discarded.  

Use the undo arp rate-limit command to restore the default.  

By default, after a port is enabled with the ARP packet rate limit function, the maximum ARP packet 

receiving rate on the port is 15 pps.  

Note that: 

You must enable the ARP packet rate limit function before you can specify the maximum ARP packet 

receiving rate on the port by using the arp rate-limit command.  

# Set the maximum ARP packet receiving rate on Ethernet 1/0/11 to 100 pps.  

<Sysname> system-view 

System View: return to User View with Ctrl+Z. 

[Sysname] interface ethernet 1/0/11 

[Sysname-Ethernet1/0/11] arp rate-limit enable 

[Sysname-Ethernet1/0/11] arp rate-limit 100