R0106-HP MSR Router Series Layer 3 - IP Services Command Reference(V7)

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udp-helper multicast-map
Use udp-helper multicast-map to map a multicast address to a directed broadcast or a unicast address
for UDP helper.
Use undo udp-helper multicast-map restore the default.
Syntax
udp-helper multicast-map multicast-address ip-address [ global | vpn-instance vpn-instance-name ] [ acl
acl-number ]
undo udp-helper multicast-map multicast-address ip-address [ global | vpn-instance
vpn-instance-name ]
Default
No address mapping is specified for UDP helper.
Views
Interface view
Predefined user roles
network-admin
Parameters
multicast-address: Specifies the destination address of the multicast packets.
ip-address: Specifies a unicast address or a directed broadcast address to which a destination multicast
address is converted.
global: Forwards converted packets on the public network.
vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance to which the destination unicast or
broadcast address belongs. The VPN instance name is a case-sensitive string of 1 to 31 characters.
acl acl-number: Specifies an ACL by its number in the range of 2000 to 3999 to filter incoming multicast
packets. Packets permitted by the ACL can be converted.
• For a basic ACL, the value range is 2000 to 2999.
• For an advanced ACL, the value range is 3000 to 3999.
Usage guidelines
Do not specify a limited broadcast address for the ip-address argument if you configure a multicast to
broadcast conversion.
Use this command on the interface that receives multicast packets.
If both the global keyword and the vpn-instance vpn-instance-name option are not specified, UDP helper
forwards the converted packets in the VPN bound to the interface that receives multicast packets. If the
interface is not bound to any VPNs, UDP helper forwards the converted packets on the public network.
You can map one multicast address to a maximum of 16 broadcast and unicast addresses. The packets
destined for the multicast address are forwarded to all mapping addresses.
Examples
# Configure UDP helper to convert the multicast packets destined for 225.0.0.1 to broadcast packets
destined for 192.168.1.255.
<Sysname> system-view
[Sysname] interface gigabitethernet 2/1/1