Juniper EX3400 Features Manual page 74

DHCP and Other System Services Feature Guide for EX2300, EX3400, and EX4300 Switches
Configuration
CLI Quick
Configuration
Step-by-Step
Procedure
54
Identify the client traffic—Specify the DHCP option that DHCP relay agent uses to
1.
identify the client traffic you want to process. The option you specify matches the
option in the client traffic.
Configure a default action—Specify the default processing action, which DHCP relay
2.
uses for identified client traffic that does not satisfy any configured match criteria.
Create match filters and associate an action with each filter—Specify match criteria
3.
that filter the client traffic. The criteria can be an exact match or a partial match with
the option string in the client traffic. Associate a processing action with each match
criterion.
To configure DHCP relay agent selective processing based on DHCP option information,
perform these tasks:
Configuring DHCP Relay Agent To Selectively Process Client Traffic Based on DHCP
Option Strings on page 54
Results on page 55
To quickly configure this example, copy the following commands, paste them in a text
file, remove any line breaks, change any details necessary to match your network
configuration, and then copy and paste the command into the CLI at the
level.
set forwarding-options dhcp-relay relay-option option-number 60
set forwarding-options dhcp-relay relay-option equals ascii video-gold forward-only
set forwarding-options dhcp-relay relay-option equals ascii video-bronze local-server-group
servergroup-15
set forwarding-options dhcp-relay relay-option starts-with hexadecimal fffff
local-server-group servergroup-east
set forwarding-options dhcp-relay relay-option default-action drop
Configuring DHCP Relay Agent To Selectively Process Client Traffic Based on
DHCP Option Strings
To configure DHCP relay selective processing:
Specify that you want to configure DHCP relay agent support.
1.
[edit forwarding-options]
user@host# edit dhcp-relay
Specify the DHCP option that DHCP relay agent uses to identify incoming client
2.
traffic.
[edit forwarding-options dhcp-relay]
user@host# set relay-option option-number
Configure a default action, which DHCP relay agent uses when the incoming client
3.
traffic does not satisfy any configured match criteria.
[edit]
60
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