Finally trying out 10Gig vmotion on our Juniper EX4550

So previously we had two 1Gig Nics setup for VMotion, on a VM with 32GB of RAM not under load it was able to vmotion in 5 Minutes.

I finally got around to stacking and configuring our EX4550’s. Using two 10G Nics it is able to transfer the same 32GB virtual machine in 30 seconds! Yay for 10X’s faster!


#juniper so you bought a juniper episode #2

So, we also have three EX 4200 series junipers. First things first lets stack these suckers.

So, actually before you stack them you need to initialize them. So I followed this ezsetup procedure.

Found this guide that basically says cable all the interconnect cables but only power on the first switch

Run the ezsetup and it will copy the configuration down to the other switches. What it won’t do is assign a vlan to the ports on the other switches though.

After reading that, It looks like I should hard code who is master / backup etc… will do that later

So, to squash one alert I will run

set chassis alarm management-ethernet link-down ignore



One thing you must must do with your ‘virtual chassis’ is to configure

Graceful Routing Engine Switchover (GRES) is not enabled by default, and it is strongly recommended to be enabled on a EX Virtual Chassis (VC).  This article includes a FAQ on the why, what, and how of enabling GRES on a VC.

It takes a failover from dropping say 30 pings, to only dropping 2 pings.

My latest annoyance though is this message: THIS DEVICE HAS BOOTED FROM THE BACKUP JUNOS IMAGE

I have tried using these steps

But if I reboot using the request system reboot slice alternate media internal, then host 0 will boot from the backup and 1 and 2 will be fine, if I do it again then 0 becomes fine 1,2 are screwed up…. such is the life


#Juniper so you just bought a juniper episode 1

So, we have been going through all sorts of Juniper stuff these days. We went to a juniper boot camp or two. The first was on switching where we used a remote lab to practice (remote labs suck) and the second was on wireless AP where they had gear and it was a much nicer experience.

So I have a EX2200-C and I was trying to configure it, sweet look there is a mini usb port on the front labeled CON (for console hopefully) I russle up a mini usb plug it in install the drivers fire up putty and…..


So hit the google, of course the mini-usb isn’t enabled (I guess you only get one, serial or mini-usb) to enable:

  1. Connect the host machine to the switch using the management console port
  2. Configure the port type:
    user@switch# set system ports auxiliary port-type type

    For example, to activate the Mini USB Type-B console port:

    user@switch# set system ports auxiliary port-type mini-usb
  1. Commit the configuration and Exit.
  2. Reboot the switch. The control and the boot log will appear on the activated console.

hmmmm It would sure be nice if there was a way this could be activated right out of the box….