Ip Icmp Error-Interval - H3C S6550X-HI Series Command Reference Manual

Views
Interface view
Predefined user roles
network-admin
Usage guidelines
A directed broadcast packet is destined for all hosts on a specific network. In the destination IP
address of the directed broadcast, the network ID identifies the target network, and the host ID is
made up of all ones.
This command enables an interface to forward directed broadcasts destined for the directly
connected network.
Hackers can exploit directed broadcasts to attack the target network. In some scenarios, however,
an interface must send such directed broadcast packets to support features such as UDP helper and
Wake on LAN.
Examples
# Enable VLAN-interface 2 to forward directed broadcast packets destined for the directly connected
network.
<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] ip forward-broadcast

ip icmp error-interval

Use
ip icmp error-interval
size for ICMP error messages.
Use
undo ip icmp error-interval
Syntax
ip icmp error-interval interval [ bucketsize ]
undo ip icmp error-interval
Default
A token is placed in the bucket every 100 milliseconds, and the bucket allows a maximum of 10
tokens.
Views
System view
Predefined user roles
network-admin
Parameters
interval
2147483647 milliseconds. To disable the ICMP rate limit, set the value to 0.
bucketsize
to 200.
Usage guidelines
This command limits the rate at which ICMP error messages are sent. Use this command to avoid
sending excessive ICMP error messages within a short period that might cause network congestion.
A token bucket algorithm is used with one token representing one ICMP error message.
: Specifies the interval for tokens to arrive in the bucket. The value range is 0 to
: Specifies the maximum number of tokens allowed in the bucket. The value range is 1
to set the interval for tokens to arrive in the bucket and the bucket
to restore the default.
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