[j-nsp] Recommended firmware for QFX5100-48T

Wed Oct 12 14:39:07 EDT 2016

You should be able to fix the ae cosmetic issue with "set interfaces aeX aggregated-ether-options link-speed 1g".

The latency just seems to be a QFX5100 thing and doesn't actually impact anything operationally, i.e. transitive latency through the switch (which is what matters after all right?) is fine and in the microsecond range as one would expect. I have run various iterations of 14, 15 and 16 and all exhibit the same behaviour.

Tried Junos 16.1R1 on some of our lab switches (24Q and 48S) and it was an instant train wreck, as expected for the first release of a major revision change. We run *lots* of these things some weird and wonderful configurations and the JTAC recommended version, 14.1X53-D35, is what I would recommend unless you have a reason not to use it, e.g. feature requirement.

-----Original Message-----
From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Paul S.
Sent: Tuesday, 11 October 2016 1:16 AM
To: Dale Shaw <dale.shaw+j-nsp at gmail.com>; Graham Brown <juniper-nsp at grahambrown.info>
Cc: juniper-nsp at puck.nether.net
Subject: Re: [j-nsp] Recommended firmware for QFX5100-48T

Hi Dale,

Yeah, seems to be the case. I tried configuring one as GE, the show command simply said it couldn't find that interface afterwards.

Auto negotiation being turned on doesn't seem to matter, it linked up even without it.

On sh int xe-0/0/0 media, you can however find these:

         Link mode: Full-duplex, Flow control: None, Remote fault: OK, Link partner Speed: 1000 Mbps

So I think that part's OK. monitor interface and ae<x> interfaces still claim to run  at 10g, but I think that's cosmetic?

I just need to figure out where the latency is coming from now. Does the QFX do any ICMP deprio by default now? This is a VC of two 5100-48Ts.

Has anyone tried any of the newer firmwares? Juniper says 16.1 is latest now.

On 10/11/2016 05:34 AM, Dale Shaw wrote:
>
> Hi all,
>
> On 11 Oct 2016 6:23 AM, "Graham Brown" <juniper-nsp at grahambrown.info 
> <mailto:juniper-nsp at grahambrown.info>> wrote:
> >
> > Hi Paul,
> >
> > Correct, just use 'replace pattern xe-0/0/0 with ge-0/0/0' etc and 
> > you should be fine.
>
> I don't think that's how it works on qfx5100-48**T**
>
> It's more like copper based EX, where the interfaces are configured as 
> ge-x/x/x even if they're plugged into something capable of only 10 or 
> 100BASE-T operation.
>
> I seem to recall that there is a trick to making it work that involves 
> autoneg but I'm currently using a tiny screen and an imaginary 
> keyboard so digging up the details isn't possible right now.
>
> I'm certain that JTAC could help but I'll try to find something when 
> I'm properly online.
>
> Cheers,
> Dale
>
> > On 11 October 2016 at 07:05, Paul S. <contact at winterei.se
> <mailto:contact at winterei.se>> wrote:
> >
> > > Hi Joel,
> > >
> > > Thanks for replying.
> > >
> > > What are the steps to configure the ports as "ge." Do I just get
> rid of xe
> > > from the config and replace it with ge for that port, that's all?
> > >
> > >
> > > On 10/11/2016 12:21 AM, joel jaeggli wrote:
> > >
> > >> On 10/10/16 7:34 AM, Paul S. wrote:
> > >>
> > >>> Hi folks,
> > >>>
> > >>> Are everyone running the JTAC recommended 14.1X53-D35.3 or have 
> > >>> you found better stability at some newer revision?
> > >>>
> > >>> My problem is that the "tri state" 10g ports (copper) don't seem 
> > >>> to want to run at anything less than 10g. It links up when
> connected to a
> > >>> 1g device, but still claims that the port is operating in 10g mode.
> > >>>
> > >>> The biggest issue I have is that if I assign a /30 to the p2p 
> > >>> interfaces (between the qfx and any copper 1g device), my p2p
> latency
> > >>> is somewhere from 10 to 40ms.
> > >>>
> > >>> I asked around to see if there's any way to force the ports into 
> > >>> 1g mode, but the "speed" knob is missing. I deliberately turned 
> > >>> on auto-negotiation, does not seem to help.
> > >>>
> > >>> 802.3ad LAGs created using any of these links also claim to have 
> > >>> speeds of 20g/40g when there's in reality only 4g of capacity.
> > >>>
> > >>> Can someone hit me with a clue stick? Thanks!
> > >>>
> > >> I presume that you're specifing the port config as ge-0/0/foo 
> > >> rather than xe-0/0/foo
> > >>
> > >> joel@ show interfaces ge-0/0/46
> > >> Physical interface: ge-0/0/46, Enabled, Physical link is Up
> > >>    Interface index: 701, SNMP ifIndex: 616
> > >>    Description:
> > >>    Link-level type: Ethernet, MTU: 1514, Speed: 1000mbps, BPDU Error:
> > >> None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering:
> > >> Disabled, Flow control: Disabled, Auto-negotiation: Enabled,
> > >>    Remote fault: Online, Media type: Copper
> > >>    Device flags   : Present Running
> > >>    Interface flags: SNMP-Traps Internal: 0x4000
> > >>    Link flags     : None
> > >>    CoS queues     : 12 supported, 12 maximum usable queues
> > >>    Current address:
> > >>    Last flapped   : 2016-08-26 03:31:56 UTC (6w3d 19:46 ago)
> > >>    Input rate     : 0 bps (0 pps)
> > >>    Output rate    : 0 bps (0 pps)
> > >>    Active alarms  : None
> > >>    Active defects : None
> > >>    Interface transmit statistics: Disabled
> > >>
> > >>    Logical interface ge-0/0/46.0 (Index 563) (SNMP ifIndex 617)
> > >>      Flags: SNMP-Traps 0x4004000 Encapsulation: ENET2
> > >>      Input packets : 146287
> > >>      Output packets: 292513
> > >>      Protocol inet, MTU: 1500
> > >>        Flags: Sendbcast-pkt-to-re
> > >>        Addresses, Flags: Is-Preferred Is-Primary
> > >>          Destination:
> > >>
> > >> joel@> show chassis hardware
> > >> Hardware inventory:
> > >> Item             Version  Part number  Serial number     Description
> > >> Chassis      QFX5100-48S-6Q
> > >> Pseudo CB 0
> > >> Routing Engine 0          BUILTIN      BUILTIN        QFX Routing
> > >> Engine
> > >> FPC 0            REV 05          QFX5100-48S-6Q
> > >>
> > >>      Xcvr 46               NON-JNPR          SFP-T
> > >>
> > >> joel@> show version
> > >> fpc0:
> > >> ------------------------------------------------------------
> > >> --------------
> > >> Hostname:
> > >> Model: qfx5100-48s-6q
> > >> JUNOS Base OS Software Suite [13.2X51-D38]
>

_______________________________________________
juniper-nsp mailing list juniper-nsp at puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp