I'm coming to terms with JunOS, and I have set up a lab that includes two SRX210s. I have set ge-0/0/1 on both devices to:

ge-0/0/1 {
unit 0 {
    family inet {

.1 on SRX1 and .2 on SRX2. Because they are directly connected and on the same subnet, a route should be visible, but when I perform a show route, I don't see anything. Perhaps I am missing something here? Am I making some stupid, rookie mistake that I will later be forced to kick myself over?

Further details: Not even learning a mac over these interfaces, but I do if I use family ethernet-switching instead.

Thanks to anyone with any idea!

1 Answer 1


In junos it is not enough to just assign IP to the interface to be functional , for interface to be pinable you need to do the below :

  1. assign the interface for security zone : EX: set security zones security-zone untrust interfaces ge-0/0/1.0
  2. you have to enable ping in the security zone : EX: set security zones security zone host inbound traffic system services ping
  • That's what I was missing. I tried to delete the whole security section at the start as I didn't want the srx to function as a firewall. Thanks!
    – Dmitriy
    Feb 6, 2017 at 17:16
  • If you want to run SRX as a router you need to change it to packet mode, so you have to delete all the security configuration and run below command: set security forwarding-options family mpls mode packet-based and then commit
    – Mr.lock
    Feb 9, 2017 at 7:27

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