Reference Guide

Interfaces | 673
UDP Broadcast
The User Datagram Protocol (UDP) broadcast feature is a software-based method to forward
low throughput (not to exceed 200 pps) IP/UDP broadcast traffic arriving on a physical or
VLAN interface.
Important Points to Remember
• This feature is available only on the E-Series platform, as noted by this symbol
under each command heading:
e
• This feature applies only to E-Series Layer 3 physical or VLAN interfaces.
• Routing Information Protocol (RIP) is not supported with the UDP Broadcast
feature.
• If this feature is configured on an interface using ip udp-helper udp-port, then the
command ip directed-broadcast becomes ineffective on that interface.
• The existing command show interface has been modified to display the
configured broadcast address.
The commands for UDP Broadcast are:
• debug ip udp-helper
• ip udp-broadcast-address
• ip udp-helper udp-port
• show ip udp-helper
debug ip udp-helper
e
Enable UDP debug and display the debug information on a console.
Syntax
debug ip udp-helper
To disable debug information, use the no debug ip udp-helper command.
Defaults
Debug disabled
Command Modes
EXEC
EXEC Privilege
Example
FTOS#debug ip udp-helper
UDP helper debugging is on
01:20:22: Pkt rcvd on Gi 5/0 with IP DA (0xffffffff) will be sent on Gi 5/1 Gi 5/2 Vlan 3
01:44:54: Pkt rcvd on Gi 7/0 is handed over for DHCP processing.