Re: [j-nsp] 100mbps bandwidth on a logical interface

[Damian Holdcroft]

This would explain the bandwidth value:
https://prsearch.juniper.net/InfoCenter/index?page=prcontent=PR471628

Cheers

On Thu., 4 Aug. 2016, 01:29 Jonathan Call, <lordsit...@hotmail.com> wrote:

> This is an old switch running 11.4R2. The class-of-service shows nothing
> of significance:
>
> Physical interface: ge-0/0/27, Index: 157
> Queues supported: 8, Queues in use: 4
>   Scheduler map: , Index: 2
>   Congestion-notification: Disabled
>
>   Logical interface: ge-0/0/27.0, Index: 123
> Object  Name   Type
> Index
> Classifier  ieee8021p-untrust  untrust
> 16
>
> This value seems so obscure you're probably correct that it is some random
> PR.
>
> Jonathan
>
> I apologize if this doesn't show up formatted properly. For some reason my
> Macbook does not seems to copy and paste well in Hotmail.
>
> From: dale.s...@gmail.com <dale.s...@gmail.com> on behalf of Dale Shaw <
> dale.shaw+j-...@gmail.com>
> Sent: Wednesday, August 3, 2016 12:53 AM
> To: Jonathan Call
> Cc: juniper-nsp@puck.nether.net
> Subject: Re: [j-nsp] 100mbps bandwidth on a logical interface
>
>
> Hi Jonathan,
>
> On 3 August 2016 at 16:23, Jonathan Call <lordsit...@hotmail.com> wrote:
> >
> > I have a  Gigabit Ethernet port on an EX4200 that is performing very
> poorly. It maxes out at about 120Mbps under heavy load. During that heavy
> load I see MAC pause frame values increasing as well as dropped packets in
> the queue counters. All of this points  to the server being the culprit.
> [...]
>
>
>
> What output do you see with "show class-of-service interface ge-0/0/27" ?
>
>
> I assume based on the existence of "ge-0/0/27" that it's a EX4200-48T/P.
> Which Junos release are you running? (might help folks match a PR, if there
> is one)
>
>
> Cheers,
> Dale
>
>
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Re: [j-nsp] 100mbps bandwidth on a logical interface

[Jonathan Call]

This is an old switch running 11.4R2. The class-of-service shows nothing of 
significance:

Physical interface: ge-0/0/27, Index: 157
Queues supported: 8, Queues in use: 4
  Scheduler map: , Index: 2
  Congestion-notification: Disabled

  Logical interface: ge-0/0/27.0, Index: 123
Object  Name   TypeIndex
Classifier  ieee8021p-untrust  untrust16

This value seems so obscure you're probably correct that it is some random PR.

Jonathan

I apologize if this doesn't show up formatted properly. For some reason my 
Macbook does not seems to copy and paste well in Hotmail.

From: dale.s...@gmail.com <dale.s...@gmail.com> on behalf of Dale Shaw 
<dale.shaw+j-...@gmail.com>
Sent: Wednesday, August 3, 2016 12:53 AM
To: Jonathan Call
Cc: juniper-nsp@puck.nether.net
Subject: Re: [j-nsp] 100mbps bandwidth on a logical interface
  

Hi Jonathan,

On 3 August 2016 at 16:23, Jonathan Call <lordsit...@hotmail.com> wrote:
>
> I have a  Gigabit Ethernet port on an EX4200 that is performing very poorly. 
> It maxes out at about 120Mbps under heavy load. During that heavy load I see 
> MAC pause frame values increasing as well as dropped packets in the queue 
> counters. All of this points  to the server being the culprit.
[...]



What output do you see with "show class-of-service interface ge-0/0/27" ?


I assume based on the existence of "ge-0/0/27" that it's a EX4200-48T/P. Which 
Junos release are you running? (might help folks match a PR, if there is one)


Cheers,
Dale

 
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Re: [j-nsp] 100mbps bandwidth on a logical interface

[Saku Ytti]

On 3 August 2016 at 09:23, Jonathan Call  wrote:
> Neither the port nor the switch has any policer/rate limiting policy defined. 
> The port is assigned to one VLAN and that VLAN has nothing defined except a 
> vlan-id. So where does this "Bandwidth: 100mbps" value for the logical 
> interface come from? On all of the other interfaces that value is 0.

I don't think it matters, I think it's only used for SNMP. But for
documentation purposes, may be useful to have them set correctly,
especially if it's subrate port, so that SNMP has idea of maximum
rate.

I would disable pause frames, there is no point for server with
plethora of memory to ask EX4200 with tiny buffers to buffer for it.

-- 
  ++ytti
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Re: [j-nsp] 100mbps bandwidth on a logical interface

[Dale Shaw]

Hi Jonathan,

On 3 August 2016 at 16:23, Jonathan Call  wrote:
>
> I have a  Gigabit Ethernet port on an EX4200 that is performing very
poorly. It maxes out at about 120Mbps under heavy load. During that heavy
load I see MAC pause frame values increasing as well as dropped packets in
the queue counters. All of this points to the server being the culprit.
[...]

What output do you see with "show class-of-service interface ge-0/0/27" ?

I assume based on the existence of "ge-0/0/27" that it's a EX4200-48T/P.
Which Junos release are you running? (might help folks match a PR, if there
is one)

Cheers,
Dale
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[j-nsp] 100mbps bandwidth on a logical interface

[Jonathan Call]

I have a  Gigabit Ethernet port on an EX4200 that is performing very poorly. It 
maxes out at about 120Mbps under heavy load. During that heavy load I see MAC 
pause frame values increasing as well as dropped packets in the queue counters. 
All of this points to the server being the culprit. However I'm seeing 
something unusual in the "show interface extensive" output. In one spot it says:

  Autonegotiation information:
    Negotiation status: Complete
    Link partner:
    Link mode: Full-duplex, Flow control: Symmetric, Remote fault: OK,
    Link partner Speed: 1000 Mbps
    Local resolution:
    Flow control: Symmetric, Remote fault: Link OK
 
Those values are no surprise. But then just a little further down it says:

Logical interface ge-0/0/27.0 (Index 123) (SNMP ifIndex 598) (Generation 190)
    Flags: SNMP-Traps 0x0 Encapsulation: ENET2
Bandwidth: 100mbps
    Traffic statistics:
 Input  bytes  :    32116
 Output bytes  :  2551284
 Input  packets:  146
 Output packets:    21977
    Local statistics:
 Input  bytes  :    32116
 Output bytes  :  2551284
 Input  packets:  146
 Output packets:    21977
    Transit statistics:
 Input  bytes  :    0    0 bps
 Output bytes  :    0    0 bps
 Input  packets:    0    0 pps
 Output packets:    0    0 pps
    Protocol eth-switch, Generation: 220, Route table: 0
  Flags: None

Neither the port nor the switch has any policer/rate limiting policy defined. 
The port is assigned to one VLAN and that VLAN has nothing defined except a 
vlan-id. So where does this "Bandwidth: 100mbps" value for the logical 
interface come from? On all of the other interfaces that value is 0. 

Jonathan
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