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- Table of Contents
-
- H3C S7500 Series Command Manual(Release 3100 Series)-(V1.04)
- 00-1Cover
- 01-CLI Commands
- 02-Login Commands
- 03-Configuration File Management Commands
- 04-VLAN Commands
- 05-Extended VLAN Application Commands
- 06-IP Address-IP Performance-IPX Commands
- 07-GVRP Commands
- 08-QinQ Commands
- 09-Port Basic Configuration Commands
- 10-Link Aggregation Commands
- 11-Port Isolation Commands
- 12-Port Binding Commands
- 13-DLDP Commands
- 14-MAC Address Table Commands
- 15-MSTP Commands
- 16-Routing Protocol Commands
- 17-Multicast Commands
- 18-802.1x Commands
- 19-AAA-RADIUS-HWTACACS-EAD Commands
- 20-Traffic Accounting Commands
- 21-VRRP-HA Commands
- 22-ARP Commands
- 23-DHCP Commands
- 24-ACL Commands
- 25-QoS Commands
- 26-Mirroring Commands
- 27-Cluster Commands
- 28-PoE Commands
- 29-UDP-Helper Commands
- 30-SNMP-RMON Commands
- 31-NTP Commands
- 32-SSH Terminal Service Commands
- 33-File System Management Commands
- 34-FTP and TFTP Commands
- 35-Information Center Commands
- 36-DNS Commands
- 37-System Maintenance and Debugging Commands
- 38-HWPing Commands
- 39-RRPP Commands
- 40-NAT-Netstream-Policy Routing Commands
- 41-Telnet Protection Commands
- 42-Hardware-Dependent Software Configuration Commands
- 43-Appendix
- Related Documents
-
| Title | Size | Download |
|---|---|---|
| 29-UDP-Helper Commands | 37 KB |
Table of Contents
Chapter 1 UDP-Helper Configuration Commands
1.1 UDP-Helper Configuration Commands
1.1.1 display udp-helper server
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
Parameters
vlan-id: ID of a VLAN.
Description
Use the display udp-helper server command to display the information about the configured destination servers connected to a specified VLAN interface and the number of the packets forwarded to each destination server. If you do not specified the vlan-id argument, the corresponding information about all the VLAN interfaces is displayed.
Examples
# Display the information about the configured destination servers connected to VLAN-interface 1 and the number of the packets forwarded to the destination servers.
<H3C> display udp-helper server interface Vlan-interface 1
Interface name Server address Packets sent
Vlan-interface1 192.1.1.2 0
1.1.2 reset udp-helper packet
Syntax
reset udp-helper packet
View
User view
Parameters
None
Description
Use the reset udp-helper packet command to clear the statistics about the packets forwarded by UDP-Helper.
Examples
# Clear the 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
Parameters
None
Description
Use the udp-helper enable command to enable the UDP-Helper function.
Use the undo udp-helper enable command to disable the UDP-Helper function.
By default, UDP-Helper is disabled.
Examples
# 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 | dns | netbios-ds | netbios-ns | tacacs | tftp | time }
undo udp-helper port { port | dns | netbios-ds | netbios-ns | tacacs | tftp | time }
View
System view
Parameters
port: number of a UDP port to be configured as a UDP-Helper destination port, in the range 1 to 65535 (except for 67 and 68).
dns: Specifies the DNS UDP port (port 53) as a UDP-Helper destination port.
netbios-ds: Specifies the NetBIOS-DS UDP port (port 138) as a UDP-Helper destination port.
netbios-ns: Specifies the NetBIOS-NS UDP port (port 137) as a UDP-Helper destination port.
tacacs: Specifies the TACACS UDP port (port 49) as a UDP-Helper destination port.
tftp: Specifies the TFTP UDP port (port 69) as a UDP-Helper destination port.
time: Specifies the time service UDP port (port 37) as a UDP-Helper destination port.
Description
Use the udp-helper port command to specify a UDP-Helper destination port.
Use the undo udp-helper port command to disable a port from being a UDP-Helper destination port.
With UDP-Helper enabled, UDP broadcast packets with their destination port being the six default UDP ports (that is, port 69, 53, 37, 137, 138, and 49) are forwarded to the configured destination servers by default. After the UDP-Helper function is disabled, all the configured UDP-Helper destination ports are cancelled, including the default UDP ports.
Note that:
l Before configuring udp-helper port, you must enable UDP-Helper.
l When you view the configuration information by using the display current-configuration command, information about default UDP ports is not displayed. Such information is displayed only when a default port is disabled.
Examples
# Configure the DNS UDP port as a UDP-Helper destination port.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] udp-helper port dns
1.1.5 udp-helper server
Syntax
udp-helper server ip-address
undo udp-helper server [ ip-address ]
View
VLAN interface view
Parameters
ip-address: IP address of the device to be configured as a destination server, in dotted decimal notation.
Description
Use the udp-helper server command to specify a destination server for the UDP broadcast packets to be forwarded.
Use the undo udp-helper server command to remove a configured destination server.
No destination server is configured by default.
Currently, you can configure up to 20 destination servers on a VLAN interface.
Note that if you do not provide the ip-address argument when executing the undo udp-helper server command, all the destination servers configured on the VLAN interface are removed.
Related commands: display udp-helper server.
Examples
# Configure the device with its IP address being 192.1.1.2 as a destination server for the UDP broadcast packets to be forwarded on VLAN-interface 1.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] nterface Vlan-interface 1
[H3C-Vlan-interface1] udp-helper server 192.1.1.2
