[j-nsp] Traffic delayed

[Richard McGovern]

Just FYI, there is a default QOS/COS config on any Juniper product.  For example, “I believe” QFX5100 is set with 5% Network Control (Strict Queue 0) and 95% Best Effort (Queue 3?) or at least most EX products default to this.

I do not believe any Juniper product ‘holds on to packets’ without something else getting in the way, that is some sort of congestion someplace.

I’d suggest you open a TAC case and have them assist you.

From: james list <jameslist72 at gmail.com>
Date: Friday, October 5, 2018 at 12:30 AM
To: Richard McGovern <rmcgovern at juniper.net>
Cc: Juniper List <juniper-nsp at puck.nether.net>
Subject: Re: [j-nsp] Traffic delayed

I perfectly knows the path, there is no qos configured and from what is seen there is no congestion (also because congestion cannot happen just only 30 minutes) and I do not have a tap on each cable, also there are port channels...


Il Gio 4 Ott 2018, 20:58 Richard McGovern <rmcgovern at juniper.net<mailto:rmcgovern at juniper.net>> ha scritto:
It does not.

Do you know if delay if from QFX5100 or MX or both?  Do you know what Queue this traffic is going into on each switch/router?

From: james list <jameslist72 at gmail.com<mailto:jameslist72 at gmail.com>>
Date: Thursday, October 4, 2018 at 2:34 PM
To: Richard McGovern <rmcgovern at juniper.net<mailto:rmcgovern at juniper.net>>, Juniper List <juniper-nsp at puck.nether.net<mailto:juniper-nsp at puck.nether.net>>
Subject: Re: [j-nsp] Traffic delayed

Due to the fact that access switch are QFX5100 in virtual chassis, does anybody know if IS-IS managing virtual- chassis has something happening every 30 minutes which could cause delay?

Cheers

Il Mar 2 Ott 2018, 21:33 Richard McGovern <rmcgovern at juniper.net<mailto:rmcgovern at juniper.net>> ha scritto:
There is no such product as an MX9K. Is your product some form of MX or an EX9200 of some type?

In either case would need to know which exact modules within the MX or EX product you are using or are involved.

When using the CAT6K was the edge QFX5100 previously as well?  I assume QFX5100 is just L2?



Sent from my iPhone

> On Oct 2, 2018, at 12:37 PM, james list <jameslist72 at gmail.com<mailto:jameslist72 at gmail.com>> wrote:
>
> Dear experts
>
> I’ve a strange issue.
>
> Our customer replaced two L2/3 switches (C6500) where a pure L2 and L3
> (hsrp) environment was set-up with a couple of new MX9k running the same L2
> and L3 services but those two MX are running MPLS/VPLS to transport L3/L2
> frames. Access switches are QFX5k connected to MX MPLS PE.
>
> Now the main issue: the customer every almost 30 minutes (sometimes 28
> sometimes 33 minutes sometimes 30) detect some frames received with a delay
> of 3-600 milliseconds. The customer is a trading venue..
>
> It seems like something slow down the forwarding processing, now I know
> Juniper separate forwarding and control, but I was thinking to OSPF LSA
> refresh or something like that since the frequency is around 30 minutes..
>
> Can anybody help me in sorting out which can be the main point here ?
>
> Thanks in advance
>
> Cheers,
>
> James
>