How To Configure Routable VLAN Interfaces On Juniper (IRB Interfaces)

#Juniper #Juniper Networks #Junos

In this tutorial we will be showing you how to create VLANs on Juniper switches, and how to configure routable VLAN interfaces (IRB interfaces) to allow for inter-VLAN communication between hosts situated in different networks. We will use virtual QFX switches on EVE NG, and virtual Windows Servers for this demonstration.

Doing inter-VLAN routing Juniper switches is very easy and simple, and this tutorial will show you exactly how to do it.

[skytree]

Great Tutorial, thanks from South Korea.

[rajpandey]

thanks for knowledge sharing!! nice explanation

[sajidshamir]

thanks for your work, i am facing one issue where pc are not pinging each other in my virtual lab.. i had tried all the images,
if you can share the images or tell us how you did your setup..

[DriveCarToBar]

Interesting thing I discovered on Juniper EX2300 switches (not sure about others) is that if you set a description on an interface, it removes the port number from the LLDP information. So if it normally reads ge-0/0/3 but you set a description of "HOST 3" it will no longer give you the port number if you look at LLDP.
I found this out by plugging in a Netscout Linkrunner to a port to check my work.

If it's not too much trouble, would you be able to do a quick How-To tutorial on setting up a private VLAN? On the older Arubas we have, it's trivial, but the process on the Junipers is not so simple.

[zoltron]

Nice, i'm getting a L3-inteface must be a vlan.xx interface error... I'm using an SRX 110

[jamannow]

good tutorial. what you use software simulator?

[TenTailedDaemon]

Hello there. I really like this format.

Despite following your tutorial and some others, I still have an issue, I'm using an EX switch for my home lab, I've setup the inet address for irb's, I've linked the vlans to the irb's and obviously put each vlan as members of the interfaces needed but I'm still unable to communicate in between VLAN's. I can't even ping the irb of a different VLAN from my PC. I've tried setting up static routes without success. I've learned network through Cisco CLI so Juniper is still a bit confusing to me and besides using the show commands you've demonstrated I don't really know what to use to troubleshoot. The vlans themselves work properly. Maybe I shouldn't even bother since I have a firewall after the switch and I could probably do the routing there but I'd still like to understand my mistake

[sajidshamir]

by default there is no interface added in vlan 1 like cisco ? so no device will communicate even we assign manual ip address to the pcs unless we put them in some vlan ?

[_Xb_]

do you describe anywhere your EVE-NG setup? do you have a github account with configurations used in the video demos? Is this the best way to contact you?

[bolillo]

Hello, I have a question. The term ge-0/0 and the term xe-0/0 are different in what way?

[SPJJ]

This is like cisco encapsulates dot1q. L3 Layer switch

[KASEXPLAINS]

Can we configure multiple irb interfaces in Junos?

[riyanahmedh]

After following this procedure, I'm getting an error while committing i.e.,
'l3-interface vlan.10'
"Interface must already be defined under {edit interfaces]"

Please help me with this. I'm using the EX3300 switch.
Could you tell me what I'm doing wrong?

[dylanmorin]

would there be any reason why this method of routing traffic would be used in the whole entire WAN?

[sfsc]

The qualtity of video is really ver bad