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1 IP Performance Optimization Configuration
When optimizing IP performance, go to these sections for information you are interested in:
z IP Performance Overview
z Enabling Reception and Forwarding of Directed Broadcasts to a Directly Connected Network
z Configuring TCP Optional Parameters
z Configuring ICMP to Send Error Packets
z Displaying and Maintaining IP Performance Optimization
IP Performance Overview
In some network environments, you can adjust the IP parameters to achieve best network performance.
IP performance optimization configuration includes:
z Enabling the device to receive and forward directed broadcasts
z Configuring TCP timers
z Configuring the TCP buffer size
z Enabling ICMP error packets sending
Enabling Reception and Forwarding of Directed Broadcasts to a
Directly Connected Network
Directed broadcast packets are broadcast on a specific network. In the destination IP address of a
directed broadcast, the network ID is a network ID identifies the target network, and the host ID is
all-one. If a device is allowed to forward directed broadcasts to a directly connected network, hackers
may mount attacks to the network. Therefore, the device is disabled from receiving and forwarding
directed broadcasts to a directly connected network by default. However, you should enable the feature
when using the Wake on LAN function to forward directed broadcasts to a host on the remote network.
Enabling Reception of Directed Broadcasts to a Directly Connected Network
If a device is enabled to receive directed broadcasts, the device will determine whether to forward them
according to the configuration on the outgoing interface.
Follow these steps to enable the device to receive directed broadcasts:
To do… Use the command… Remarks
Enter system view
system-view
—
Enable the device to receive
directed broadcasts
ip forward-broadcast
Required
By default, the device is
disabled from receiving
directed broadcasts.
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