H3C Technologies H3C SecPath F1000-E - Manual (Page 21)

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IP Performance Optimization Configuration
This chapter includes these sections:
• IP Performance Optimization Overview
• Enabling Reception and Forwarding of Directed Broadcasts to a Directly Connected Network
• Configuring TCP Attributes
• Configuring ICMP to Send Error Packets
• Displaying and Maintaining IP Performance Optimization
IP Performance Optimization Overview
In some network environments, you can adjust the IP parameters to achieve best network performance.
IP performance optimization configuration includes:
• Enabling the device to receive and forward directed broadcasts
• Configuring the maximum TCP segment size (MSS) for the interface
• Configuring the TCP send/receive buffer size
• Configuring TCP timers
• Enabling ICMP error packets sending
• Enabling support for ICMP extensions
• Enabling ICMP flow control
• Configuring IP virtual fragment reassembly
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. However, you should enable the feature when:
• Using the UDP Helper function to convert broadcasts to unicasts and forward them to a specified
server.
• Using the Wake on LAN function to forward directed broadcasts to a host on the remote network.