Juniper configuration recommendations/BCP

Thu Oct 8 15:55:42 UTC 2020

~30 years of being a Cisco IOS shop or Cisco IOS-XR shop?  A bit different.

Welcome to the SP-world of really nice JunOS

Conf

Blah blah blah

Commit check                  <----- will check your pending config for correctness

Commit | compare         <----- will tell you what is about to change (similar to IOS-XR “show commit change diff”

…if you don’t like it….

Rollback

…if you are nervous about breaking something and what to smoke test it…

Commit confirmed 2      <----- allows you a couple minutes to see if the sky falls…if it does, it’ll all be good in 2 minutes when it reverses the change.  XR has this too

…if you like it…

Commit

…if you still don’t like it…

Conf

Rollback 1

Commit

Gosh, there’s so much more

Built in monitor/sniffer for interfaces

JunOS is so linux based, that you will find a lot of things like that in it.  Shell under the hood and see various other things

The mx204 has some strange 1 gig option for 10 gig interfaces… which are still referred to as xe-?/?/? even when operating in 1 gig…

-Aaron

From: NANOG <nanog-bounces+aaron1=gvtc.com at nanog.org> On Behalf Of Forrest Christian (List Account)
Sent: Thursday, October 8, 2020 4:38 AM
To: nanog list <nanog at nanog.org>
Subject: Juniper configuration recommendations/BCP

<ISP hat on>

After nearly 30 years of being a cisco shop, I'm working on configuring our first pair of Juniper MX204's to replace our current provider-edge cisco. 

I've worked through enough of the Juniper documentation/books to have a fairly good handle on how to configure these, but I wanted to check with the list to see if there are any Juniper-Specific gotchas I might run into that isn't documented well.  

I've done a bit of googling and am either finding stuff that is largely Cisco-specific or which is generic - all of which I'm rather familiar with based on my past history.   Is there anything I should worry about which is Juniper-specific?

-- 

- Forrest

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