[j-nsp] Experience with Junos 15.1 on MX960?

[Niall Donaghy]

Hello,

We are running 15.1F6-S6.4 on MX480 and MX960. No MC-LAG.
We rolled this out after Juniper PIIR and SURR, and our own internal type-certification process.
We needed F6 for EVPN and streaming telemetry features.
Several scary service-affecting bugs came out in the PBN notices, so we upgraded twice from the initial version and, hence, now on S6.4.

There are a number of threatening bugs in S6.4 still, but so far the experience has been good.

We are running RE-S-1800x4 so are immune to PR1312308.
Your REs are affected, therefore you should check the PR and TSB, which recommends 15.1F6-S10 or 15.1F7-S3.

TSB17205 http://kb.juniper.net/InfoCenter/index?page=content&id=TSB17205&actp=SUBSCRIPTION - PR1312308 - All protocols time out and FPCs are restarting after transient SSD freeze
PR1312308 https://prsearch.juniper.net/InfoCenter/index?page=prcontent&id=PR1312308 - All protocols time out and FPCs are restarting after transient SSD freeze

I strongly recommend you do your due diligence in researching bugs affecting your proposed hardware and software versions; there be dragons.

I can tell you for 15.1F6-S6.4 we got 10 PBNs in October this year, thankfully none in November, and for December, let's see what we get for Xmas..
Br,
Niall

Niall Donaghy
Senior Network Engineer
GÉANT
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-----Original Message-----
From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Karl Gerhard
Sent: 12 December 2017 09:53
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] Experience with Junos 15.1 on MX960?

Hello

we've had very bad experience with Junos 15.1 on our switches (EX4550, EX4300, EX4200).
Now we're getting new MX960s with 2xRE-S-X6-64G and unfortunately the minimum required Junos version for this RE is 15.1. Can anyone share their experience with Junos 15.1 on MX960? Is it as bad as it is on the switches? Would it be wiser to jump directly to 16.1/16.2/17.1/17.2/17.3?

We're especially interested in bugs/problems related to MC-LAG.

Regards
Karl
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