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3com 5500-ei pwr Reference Guide

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icmp unreach send 
Syntax 
icmp unreach send 
undo icmp unreach send 
View 
System view 
Parameters 
None 
Description 
Use the icmp unreach send command to enable the device to send ICMP destination unreachable 
packets. After enabled with this feature, the switch, upon receiving a packet with an unreachable 
destination, discards the packet and then sends a destination unreachable packet to the source host. 
Use the undo icmp unreach send command to disable the device from sending ICMP destination 
unreachable packets. 
By default, the device is enabled to send ICMP destination unreachable packets.  
Examples 
# Disable the device from sending ICMP destination unreachable packets. 
<Sysname> system-view 
System View: return to User View with Ctrl+Z. 
[Sysname] undo icmp unreach send 
ip forward-broadcast 
Syntax 
ip forward-broadcast 
undo ip forward-broadcast 
View 
System view 
Parameters 
None 
Description 
Use the ip forward-broadcast command to enable the device to receive directed broadcasts to a 
directly connected network. 
Use the undo  ip forward-broadcast command to disable the device from receiving directed 
broadcasts to a directly connected network. 
By default, the device is disabled from receiving directed broadcasts to a directly connected network.