Configuring Udp-Helper - Huawei Quidway S3900 Series Operation Manual

Operation Manual – UDP-Helper
Quidway S3900 Series Ethernet Switches

1.2 Configuring UDP-Helper

Table 1-2 Configure UDP-Helper
Enter system view
Enable UDP-Helper
Specify a UDP port that
broadcasts UDP packets
Enter VLAN interface view
Configure the destination
server to which the UDP
packets are to be
forwarded
Caution:
You need to enable the UDP-Helper function before specifying a UDP-Helper
destination port.
The dns, netbios-ds, netbios-ns, tacacs, tftp, and time keywords refers to the
six default UDP ports. You can configure a default port to be a UDP-Helper
destination port by specifying the corresponding port number or the corresponding
keyword. For example, udp-helper port 53 and udp-helper port dns specify the
same port.
The display current-configuration command does not display the default UDP
ports that are configured to be UDP-Helper destination ports.
After UDP-Helper is disabled, all the configured UDP ports are cancelled,
including the default ports.
You can configure up to 40 UDP ports as UDP-Helper destination ports on a
device.
You can configure up to 20 destination servers on a VLAN interface.
Operation
system-view
udp-helper enable
udp-helper port
{ port-number | dns |
netbios-ds | netbios-ns |
tacacs | tftp | time }
interface vlan-interface
vlan-id
udp-helper server
ip-address
Huawei Technologies Proprietary
Chapter 1
Command
1-2
UDP-Helper Configuration
Description
—
Required
UDP-Helper is disabled
by default
If the port is a default
UDP port, you do not
need to configure it;
otherwise you need to
configure the port as
required.
With UDP-Helper
enabled, the six ports with
port number 53, 138, 137,
49, 69, and 37 are
enabled to broadcast
UDP packets
—
Required
By default, no destination
server is configured