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Update on 10.4R9 stability for MX?

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chmorl at wm

May 9, 2012, 12:13 PM

Post #1 of 8 (831 views)
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Update on 10.4R9 stability for MX?

It has been a couple of months since the JTAC recommended Junos software
versions has been updated for the MX. As of February, the recommendation
was to use 10.4R8.5 for the MX, except that there is an issue related to
BFD configurations on the DPC line cards. Supposedly, the fix is in
10.4R9.

In looking at the release notes, there are some issues that have been
resolved in the 11.x series but nothing noted yet for any future 10.4.x
releases. Perhaps there are future 10.4.x versions planned to carry
forward these fixes?

I am curious to know about anyone's experience with 10.4R9 over the past
few months. I have DPC only currently; i.e. no MPC hardware -- and no
MultiServices.

Thanks.

Clarke Morledge
College of William and Mary
Information Technology - Network Engineering
Jones Hall (Room 18)
Williamsburg VA 23187
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ras at e-gerbil

May 9, 2012, 4:59 PM

Post #2 of 8 (784 views)
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Re: Update on 10.4R9 stability for MX? [In reply to]

On Wed, May 09, 2012 at 03:13:26PM -0400, Clarke Morledge wrote:
> It has been a couple of months since the JTAC recommended Junos
> software versions has been updated for the MX. As of February, the
> recommendation was to use 10.4R8.5 for the MX, except that there is an
> issue related to BFD configurations on the DPC line cards.
> Supposedly, the fix is in 10.4R9.
>
> In looking at the release notes, there are some issues that have been
> resolved in the 11.x series but nothing noted yet for any future
> 10.4.x releases. Perhaps there are future 10.4.x versions planned to
> carry forward these fixes?
>
> I am curious to know about anyone's experience with 10.4R9 over the
> past few months. I have DPC only currently; i.e. no MPC hardware --
> and no MultiServices.

There is a serious issue with MPLS RSVP auto-bandwidth in 10.4R9, which
can cause the reservation calculations to be off by quite a bit. The
least broken code we've found so far is 10.4S9, I'm surprised they
haven't done an R10 yet.

--
Richard A Steenbergen <ras [at] e-gerbil> http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)
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daniel at shunoshu

May 10, 2012, 12:36 AM

Post #3 of 8 (790 views)
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Re: Update on 10.4R9 stability for MX? [In reply to]

On Wed, May 9, 2012 at 9:13 PM, Clarke Morledge <chmorl [at] wm> wrote:
> I am curious to know about anyone's experience with 10.4R9 over the past few
> months. 狢 have DPC only currently; i.e. no MPC hardware -- and no
> MultiServices.

I've been hit by:
PR570168 - RE crash triggered by deletion and recreation of multiple
vt/lsi IFLs in quick successions. I saw this once right after an
upgrade. Nice that both RE's crash simultaneously...
PR724638 - cosd crash

but other than that, i haven't seen any major issues.

--Daniel.

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daniel at shunoshu

May 10, 2012, 12:40 AM

Post #4 of 8 (778 views)
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Re: Update on 10.4R9 stability for MX? [In reply to]

Hi,

On Thu, May 10, 2012 at 1:59 AM, Richard A Steenbergen <ras [at] e-gerbil> wrote:
> There is a serious issue with MPLS RSVP auto-bandwidth in 10.4R9, which
> can cause the reservation calculations to be off by quite a bit. The
> least broken code we've found so far is 10.4S9, I'm surprised they
> haven't done an R10 yet.

do you have a PR for this? What are the circumstances? Haven't seen
this, but to be honest, haven't paid very close attention to it :)

I was told that R10 should be available "early May", possibly even this week...

--Daniel.
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sergevautour at yahoo

May 10, 2012, 8:45 AM

Post #5 of 8 (776 views)
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Re: Update on 10.4R9 stability for MX? [In reply to]

We've started to implement 10.4R9 in Prod. A few MX960s with MPC & DPC mix and MX80s have been upgraded without a problem (knock on wood!). We use L2VPN & VPLS with OSPF/LDP/BGP.

Serge

________________________________
From: Clarke Morledge <chmorl [at] wm>
To: juniper-nsp [at] puck
Sent: Wednesday, May 9, 2012 4:13:26 PM
Subject: [j-nsp] Update on 10.4R9 stability for MX?

It has been a couple of months since the JTAC recommended Junos software versions has been updated for the MX.� As of February, the recommendation was to use 10.4R8.5 for the MX, except that there is an issue related to BFD configurations on the DPC line cards.� Supposedly, the fix is in 10.4R9.

In looking at the release notes, there are some issues that have been resolved in the 11.x series but nothing noted yet for any future 10.4.x releases.� Perhaps there are future 10.4.x versions planned to carry forward these fixes?

I am curious to know about anyone's experience with 10.4R9 over the past few months.� I have DPC only currently; i.e. no MPC hardware -- and no MultiServices.

Thanks.

Clarke Morledge
College of William and Mary
Information Technology - Network Engineering
Jones Hall (Room 18)
Williamsburg VA 23187
_______________________________________________
juniper-nsp mailing list juniper-nsp [at] puck
https://puck.nether.net/mailman/listinfo/juniper-nsp
_______________________________________________
juniper-nsp mailing list juniper-nsp [at] puck
https://puck.nether.net/mailman/listinfo/juniper-nsp

mark.tinka at seacom

May 21, 2012, 6:43 AM

Post #6 of 8 (719 views)
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Re: Update on 10.4R9 stability for MX? [In reply to]

On Thursday, May 10, 2012 01:59:55 AM Richard A Steenbergen

> There is a serious issue with MPLS RSVP auto-bandwidth in
> 10.4R9, which can cause the reservation calculations to
> be off by quite a bit. The least broken code we've found
> so far is 10.4S9, I'm surprised they haven't done an R10
> yet.

As far back as I can remember, Richard, you've pretty much
had this particular issue with almost every major train
Juniper have released :-).

Mark.
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ras at e-gerbil

May 21, 2012, 8:23 AM

Post #7 of 8 (731 views)
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Re: Update on 10.4R9 stability for MX? [In reply to]

On Mon, May 21, 2012 at 03:43:33PM +0200, Mark Tinka wrote:
> On Thursday, May 10, 2012 01:59:55 AM Richard A Steenbergen
>
> > There is a serious issue with MPLS RSVP auto-bandwidth in
> > 10.4R9, which can cause the reservation calculations to
> > be off by quite a bit. The least broken code we've found
> > so far is 10.4S9, I'm surprised they haven't done an R10
> > yet.
>
> As far back as I can remember, Richard, you've pretty much
> had this particular issue with almost every major train
> Juniper have released :-).

I wish it was a single issue, at least then I would have one definite
thing to bitch about. It's more like a dozen different issues affecting
the same subsystem, in a dozen different versions of code, over the last
couple of years. You could say the same thing about SNMP, it's been
broken about as many times over about as many different revisions
(including recent ones :/).

10.4S9 does seem to have solved this latest issue, which was causing
wildly inaccurate reservations. It's almost comical when RSVP tries to
reserve a several petabit LSP (not much to do with recent JUNOS except
laugh at this point, right? :P), but it's a lot less funny when nearly
empty high-priority LSPs get mis-calculated to several gigabits and
start causing incorrect preemptions...

--
Richard A Steenbergen <ras [at] e-gerbil> http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)
_______________________________________________
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keegan.holley at sungard

May 21, 2012, 10:49 AM

Post #8 of 8 (728 views)
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Re: Update on 10.4R9 stability for MX? [In reply to]

The answer is pretty much the same with every code version. You can query
the list for what others think are relevant bugs, but it's largely
subjective. Depends on the size of your network, the services you use and
where you're upgrading from. If you're already in the 10.4 train upgrading
to a new release is (some list members may differ) supposed to provide bug
fixes only and no new features or bugs. If you are coming from a much
older code you may see new bugs that weren't there before as well as
changes in features or syntax. Generally, speaking I haven't come across
many bugs in 10.4 although we're running an older release. According to
their software lifecycle policy there shouldn't be any bugs in 10.4R9 that
aren't in earlier versions of 10.4. As I said earlier though YMMV
considerably.

2012/5/9 Clarke Morledge <chmorl [at] wm>

> It has been a couple of months since the JTAC recommended Junos software
> versions has been updated for the MX. As of February, the recommendation
> was to use 10.4R8.5 for the MX, except that there is an issue related to
> BFD configurations on the DPC line cards. Supposedly, the fix is in
> 10.4R9.
>
> In looking at the release notes, there are some issues that have been
> resolved in the 11.x series but nothing noted yet for any future 10.4.x
> releases. Perhaps there are future 10.4.x versions planned to carry
> forward these fixes?
>
> I am curious to know about anyone's experience with 10.4R9 over the past
> few months. I have DPC only currently; i.e. no MPC hardware -- and no
> MultiServices.
>
> Thanks.
>
>
>
> Clarke Morledge
> College of William and Mary
> Information Technology - Network Engineering
> Jones Hall (Room 18)
> Williamsburg VA 23187
> ______________________________**_________________
> juniper-nsp mailing list juniper-nsp [at] puck
> https://puck.nether.net/**mailman/listinfo/juniper-nsp<https://puck.nether.net/mailman/listinfo/juniper-nsp>
>
>
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