Juniper EX3400 Features Manual
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Brand: Juniper
Category: Network Router , Switch
Type: Features manual
Model: Juniper EX2300 , Juniper EX4300 , Juniper EX3400
Pages: 476
Description Enable TFTP or DNS request packet forwarding, or configure the router, switch, or interface
to act as a DHCP/BOOTP relay agent. Use only one server address per interface or global
configuration.
You can also use the helpers port statement to enable forwarding LAN broadcast traffic
on custom UDP ports to particular servers as unicast traffic. Configure the UDP port
number and optionally an interface on which to listen for broadcast traffic, and the
destination server address to receive that traffic, as shown in either of the following
sample configurations:
user@ host# show forwarding-options
helpers {
port 1200 {
server 10.20.30.40;
}
}
user@ host# show forwarding-options
helpers {
port 3000 {
interface {
fe-0/0/1.0 {
server 192.0.2.2;
}
}
}
port 3001 {
interface {
fe-0/0/0.0 {
server 192.0.2.2;
}
}
}
}
The remaining statements are explained separately. See CLI Explorer.
Required Privilege
Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
Related
Documentation
• Configuring DNS and TFTP Packet Forwarding
• Configuring Port-based LAN Broadcast Packet Forwarding on page 133
• Configuring Routers, Switches, and Interfaces as DHCP and BOOTP Relay Agents
329Copyright © 2017, Juniper Networks, Inc.
Chapter 13: Configuration Statements (Forwarding Options)