Optimizing Ip Performance; Configuration Procedure; Configuration Example - HPE FlexNetwork HSR6800 Configuration Manual
Comware 7 layer 3, ip services
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Also See for FlexNetwork HSR6800:
- Security command reference (538 pages) ,
- Configuration manual (482 pages) ,
- Command reference manual (153 pages)
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Optimizing IP performance
A customized configuration can help optimize overall IP performance. This chapter describes various
techniques you can use to customize your installation.
Enabling an interface to receive and forward
directed broadcasts destined for the directly
connected network
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.
If an interface is allowed to forward directed broadcasts destined for the directly connected network,
hackers can exploit this vulnerability to attack the target network. In some scenarios, however, an
interface must send such directed broadcast packets to support the following features:
•
UDP helper—Converts the directed broadcasts to unicasts and forwards them to a specific
server.
•
Wake on LAN—Sends the directed broadcasts to wake up the hosts on the target network.
You can configure this function to enable the interface to forward directed broadcast packets that are
destined for directly connected network.
Configuration procedure
To enable an interface to receive and forward directed broadcasts destined to the directly connected
network:
Step
1.
Enter system view.
2.
Enter interface view.
3.
Enable the interface to
receive and forward directed
broadcasts destined for the
directly connected network.
Configuration example
Network requirements
As shown in
GigabitEthernet 2/1/1 of Router A. Configure a static route destined for the host on Router B. Router
B can receive directed broadcasts from the host to IP address 2.2.2.255.
Command
system-view
interface interface-type
interface-number
ip forward-broadcast
Figure
73, the default gateway of the host is the IP address 1.1.1.2/24 of the interface
185
Remarks
N/A
N/A
By default, an interface cannot
forward directed broadcasts
destined for the directly connected
network.
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Troubleshooting
