HPE FlexFabric 5950 Series

198
Predefined user roles
network-admin
Parameters
port-number: Specifies a UDP port number in the range of 1 to 65535 (except 67 and 68).
dns: Specifies the UDP port 53 used by DNS packets.
netbios-ds: Specifies the UDP port 138 used by NetBIOS distribution service packets.
netbios-ns: Specifies the UDP port 137 used by NetBIOS name service packets.
tacacs: Specifies the UDP port 49 used by TACACS packets.
tftp: Specifies the UDP port 69 used by TFTP packets.
time: Specifies the UDP port 37 used by time protocol packets.
Usage guidelines
Upon receiving a UDP broadcast or multicast packet, UDP helper uses the specified UDP ports to
match the UDP destination port number of the packet.
To specify a UDP port, you can specify the port number or the protocol keyword. For example,
udp-helper port 53 and udp-helper port dns specify the same UDP port.
You can specify a maximum of 256 UDP ports on a device.
Examples
# Specify the UDP port 100 for UDP helper.
<Sysname> system-view
[Sysname] udp-helper port 100
udp-helper server
Use udp-helper server to specify a destination server for UDP helper to convert broadcast to
unicast.
Use undo udp-helper server to remove a destination server.
Syntax
udp-helper server ip-address [ global | vpn-instance vpn-instance-name ]
undo udp-helper server [ ip-address [ global | vpn-instance vpn-instance-name ] ]
Default
No destination server is specified for UDP helper to convert broadcast to unicast.
Views
Interface view
Predefined user roles
network-admin
Parameters
ip-address: Specifies the IP address of a destination server, in dotted decimal notation.
global: Forwards converted unicast packets to the server on the public network.
vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance to which the server belongs.
The vpn-instance-name argument represents the VPN instance name, a case-sensitive string of 1 to
31 characters.