destination IP address in the IP packet header and sends the packet to a specified destination
server.
l If the destination UDP port number of packets is different from the specified UDP port
number, the Router discards the packet.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
udp-helper enable
UDP helper is enabled.
----End
9.3.3 (Optional) Configuring a UDP Port for Packets to Be Relayed
This section describes how to configure a UDP port for packets to be relayed.
Prerequisites
UDP helper has been enabled.
Context
After the UDP helper function is enabled, the AR150/200 relays broadcast packets with UDP
ports 37, 49, 53, 69, 137, and 138 by default. If the port number that needs to be configured is
in the range of default UDP port numbers, you can skip this configuration procedure.
The AR150/200 does not relay DHCP messages with UDP ports 67 or 68.
Perform the following operations on the AR150/200.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
udp-helper port { port-number | dns | netbios-ds | netbios-ns | tacacs | tftp |
time }
The UDP port of packets to be relayed is configured.
----End
9.3.4 Configuring a Destination Server
This section describes how to configure a destination server.
Huawei AR150&200 Series Enterprise Routers
Configuration Guide - IP Service 9 UDP Helper Configuration
Issue 02 (2012-03-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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