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#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.

http://www.juniper.net/techpubs/en_US/release-independent/junos/topics/task/configuration/ex-series-switch-initial-configuration-setting-up-j-web.html

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

http://www.juniper.net/techpubs/en_US/junos11.4/topics/task/configuration/virtual-chassis-ex4200-cli.html

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

commit

—-

One thing you must must do with your ‘virtual chassis’ is to configure http://kb.juniper.net/InfoCenter/index?page=content&id=KB21368&smlogin=true

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

http://blog.ciscoinferno.net/slices-and-junos

I have tried using these steps http://kb.juniper.net/InfoCenter/index?page=content&id=KB23180&pmv=print

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

 

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