Switching

Hi everybody,

I do understand why a lot of people would prefer working on Cisco. I need my client to boot from my PXE server on another subnet and I spent my day searching how to do it ... With a Catalyst, I did it in 30 seconds:

interface GigabitEthernet2/0.10
encapsulation dot1Q 10
ip address 192.168.1.250 255.255.255.0
ip helper-address 192.168.2.100
ip nat inside
!
interface GigabitEthernet2/0.20
encapsulation dot1Q 20
ip address 192.168.2.250 255.255.255.0
ip nat inside

With QFX ... ???

root> show version
fpc0:
--------------------------------------------------------------------------
Model: vqfx-10000

{master:0}[edit forwarding-options]
root# show
storm-control-profiles default {
all;
}
helpers {
tftp {
interface {
em0 {
server 192.168.2.100;
}
}
}
}

Regards,

Gueug

Hi,

Check this document, it has configuration for dhcp/bootp relay.

Tim

Greetings, 

Juniper actually have some good articles explaining how to configure a pxe boot with multiple dhcp servers. 

See the next example that I have with me from previous scenarios;

set forwarding-options dhcp-relay route-suppression destination

set forwarding-options dhcp-relay overrides allow-snooped-clients

set forwarding-options dhcp-relay overrides delete-binding-on-renegotiation  

set forwarding-options dhcp-relay server-group DHCP-SERVERS 10.10.10.1

set forwarding-options dhcp-relay server-group DHCP-SERVERS 10.10.10.3  PXE 

set forwarding-options dhcp-rela active-server-group DHCP-SERVERS

set forwarding-options dhcp-rela group DHCP-SERVERS interface irb.100

set forwarding-options dhcp-rela group DHCP-SERVERS interface irb.200 

set forwarding-options dhcp-rela group DHCP-SERVERS interface irb.300  

set forwarding-options dhcp-relay forward-snoped-clients configured-interfaces    ---- > optional, only for mc-lag setting.              

/////////// 

Set forwarding-options dhcp-relay forward-snooped-clients all-interfaces ->>>MC-LAG setup>> enables the ICL to forward DHCP receiving a DHCP request/ack when state is not present with Relay software it will drop by default, when this knob is configured it will forward it.

set forwarding-options dhcp-relay overrides allow-snooped-clients ->>>>> this will create state in DHCP relay wh (renew/inform) is received from Client for which state was not present

set forwarding-options dhcp-relay route-suppression destination ->>>>> Suppress installation of destination rout the access-internal option are mutually exclusive; however, the access-internal  option also suppresses destination routes. 

ref: 

https://kb.juniper.net/InfoCenter/index?page=content&id=KB29822&actp=METADATA  

https://kb.juniper.net/InfoCenter/index?page=content&id=KB30596    

If this help you to resolve your query please mark as resolved! 

Thank you,  

Esteban Montes