Udp Helper; Configure Udp Helper; Important Points To Remember; Enabling Udp Helper - Dell Force10 Z9000 Configuration Manual
Hide thumbs
Also See for Force10 Z9000:
- Reference manual (1483 pages) ,
- Configuration manual (984 pages) ,
- Manual (56 pages)
Table of Contents
Advertisement
•
Set FTOS to create and send ICMP unreachable messages on the interface.
INTERFACE mode
ip unreachable
To view if ICMP unreachable messages are sent on the interface, use the show config command in INTERFACE mode. If it is not
listed in the show config command output, it is enabled. Only non-default information is displayed in the show config
command output.
UDP Helper
User datagram protocol (UDP) helper allows you to direct the forwarding IP/UDP broadcast traffic by creating special broadcast
addresses and rewriting the destination IP address of packets to match those addresses.
Configure UDP Helper
Configuring Dell Networking OS to direct UDP broadcast is a two-step process:
1.
Enable UDP helper and specify the UDP ports for which traffic is forwarded. Refer to
2.
Configure a broadcast address on interfaces that will receive UDP broadcast traffic. Refer to
Important Points to Remember
•
The existing ip directed broadcast command is rendered meaningless if you enable UDP helper on the same interface.
•
The broadcast traffic rate should not exceed 200 packets per second when you enable UDP helper.
•
You may specify a maximum of 16 UDP ports.
•
UDP helper is compatible with IP helper (ip helper-address):
– UDP broadcast traffic with port number 67 or 68 are unicast to the dynamic host configuration protocol (DHCP) server per
the ip helper-address configuration whether or not the UDP port list contains those ports.
– If the UDP port list contains ports 67 or 68, UDP broadcast traffic is forwarded on those ports.
Enabling UDP Helper
To enable UDP helper, use the following command.
•
Enable UPD helper.
ip udp-helper udp-ports
Example of Enabling UDP Helper and Using the UDP Helper show Command
Dell(conf-if-te-1/1)#ip udp-helper udp-port 1000
Dell(conf-if-te-1/1)#show config
!
interface TenGigabitEthernet 1/1
ip address 2.1.1.1/24
ip udp-helper udp-port 1000
no shutdown
To view the interfaces and ports on which you enabled UDP helper, use the show ip udp-helper command from EXEC
Privilege mode.
Dell#show ip udp-helper
--------------------------------------------------
Port UDP port list
--------------------------------------------------
te 1/1 1000
328
IPv4 Routing
Enabling UDP
Helper.
Configuring a Broadcast
Address.
Advertisement
Table of Contents
Troubleshooting
