H3C S3600 Series Ethernet Switches Command Manual-Release 1510(V1.04)

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32-UDP Helper Command
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32-UDP Helper Command 28 KB

Chapter 1  UDP Helper Configuration Commands

1.1  UDP Helper Configuration Commands

1.1.1  display udp-helper server

Syntax

display udp-helper server [ interface Vlan-interface vlan-id ]

View

Any view

Parameter

vlan-id: VLAN interface number.

Description

Use the display udp-helper server command to display the information of the destination server corresponding to the VLAN interface.

Example

# Display the information of the destination server corresponding to VLAN interface 1.

<H3C> display udp-helper server interface Vlan-interface 1

interface name       server address      packets send

Vlan-interface1      192.1.1.2           0

The information above shows that the IP address of the destination server corresponding to VLAN interface 1 is 192.1.1.2, and no packets have been forwarded.

1.1.2  reset udp-helper packet

Syntax

reset udp-helper packet

View

User view

Parameter

None

Description

Use the reset udp-helper packet command to clear statistics about the packets forwarded by UDP Helper.

Example

# Clear statistics about the packets forwarded by UDP Helper.

<H3C> reset udp-helper packet

1.1.3  udp-helper enable

Syntax

udp-helper enable

undo udp-helper enable

View

System view

Parameter

None

Description

Use the udp-helper enable command to enable UDP Helper function.

Use the undo udp-helper enable command to disable UDP Helper function.

By default, UDP Helper is disabled.

Example

# Enable UDP Helper.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] udp-helper enable

1.1.4  udp-helper port

Syntax

udp-helper port { port-number | dns | netbios-ds | netbios-ns | tacacs | tftp | time }

undo udp-helper port { port-number | dns | netbios-ds | netbios-ns | tacacs | tftp | time }

View

System view

Parameter

port-number: Number of the port whose UDP packets are to be forwarded, in the range 0 to 65535 (except for 67 and 68).

dns: Domain name system, corresponding to UDP port 53.

netbios-ds: NetBios datagram service, corresponding to UDP port 138.

netbios-ns: NetBios name service, corresponding to UDP port 137.

tacacs: TAC access control system, corresponding to UDP port 49.

tftp: Trivial file transfer protocol, corresponding to UDP port 69.

time: Time service, corresponding to UDP port 37.

Description

Use the udp-helper port command to specify the UDP port whose UDP broadcast packets are to be forwarded.

Use the undo udp-helper port command to cancel the configuration.

Example

# Specify port 651 to be the UDP port to forward UDP broadcast packets.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] udp-helper port 651

1.1.5  udp-helper server

Syntax

udp-helper server ip-address

undo udp-helper server [ ip-address ]

View

VLAN interface view

Parameter

ip-address: IP address of the destination server, in dotted decimal notation.

Description

Use the udp-helper server command to specify the destination server for the UDP broadcast packets to be forwarded.

Use the undo udp-helper server command to remove the destination server for the UDP broadcast packets to be forwarded.

No destination server is configured by default.

Related command: display udp-helper server.

Example

# Specify to forward UDP packets of VLAN1 interface to the destination server at 192.1.1.2.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Vlan-interface 1

[H3C-Vlan-interface1] udp-helper server 192.1.1.2

 

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