Michael thanks for the response. While at first i may have agreed with you my
research tells me otherwise. In the link i provided in my previous email it
states that WFQ and WRED can not be configured on the same interface.
Also although the DSG does show it using both WFQ and flow based WRED the vide
walk through for this task does not.
When i configured the interfaces i only used random detect commands, if i was
wrong in my configuration i need to know why.
Sent from my T-Mobile myTouch 3G Slide
----- Reply message -----
From: "Michael Miller" <[email protected]>
Date: Thu, Oct 7, 2010 1:47 am
Subject: [OSL | CCIE_RS] WB1 Lab 21 Task 4
To: "Di Bias, Steve" <[email protected]>, "[email protected]"
<[email protected]>
I'll take a shot at this, but I haven't gotten this far in my CCIE studies.
I believe I recall from my CCNP studies that fair-queue sets the queueing
mechanism, while random-detect applies Random Early Detection (WRED) to the
queues that have been configured. I also recall that the default queueing
mechanism for any high speed link (>T1) is FIFO. Apparently the router will not
allow you to change the type of queue while the RED is applied, however after
you remove RED you are able to select Fair Queueing. Finally, you are able to
reapply the RED to the newly configured queues.
Thanks,
Michael
On Thu, Oct 7, 2010 at 6:01 AM, Di Bias, Steve
<[email protected]<mailto:[email protected]>> wrote:
Guys,
My original question is why does the DSG show the configuration like this?
interface Ethernet0/0
fair-queue
random-detect
random-detect flow
random-detect flow count 128
random-detect flow average-depth-factor 16
At first I thought I made a mistake but researching I see that WFQ and WRED can
NOT be enabled on the same interface (which makes sense).
http://tinyurl.com/25f9mk8
So that being said using the command “fair-queue” before using the command
“random-detect” makes ZERO sense to me. Also I just checked the WB1 video walk
through and the “fair-queue” command was not used there.
So my question again is what is the purpose of doing it this way? Is it a
mistake in the DSG?
Thanks in advance
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]<mailto:[email protected]>]
On Behalf Of Di Bias, Steve
Sent: Wednesday, October 06, 2010 5:27 PM
To: [email protected]<mailto:[email protected]>
Cc: [email protected]<mailto:[email protected]>
Subject: Re: [OSL | CCIE_RS] WB1 Lab 21 Task 4
Got ya, but why does the dsg show us configuring fair queue then random detect
after??
Sent from my T-Mobile myTouch 3G Slide
----- Reply message -----
From: "Marko Milivojevic" <[email protected]<mailto:[email protected]>>
Date: Wed, Oct 6, 2010 5:12 pm
Subject: [OSL | CCIE_RS] WB1 Lab 21 Task 4
To: "Di Bias, Steve" <[email protected]<mailto:[email protected]>>
Cc: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>,
"[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Routers don't support RED, only WRED :-)
--
Marko Milivojevic - CCIE #18427
Senior Technical Instructor - IPexpert
FREE CCIE training: http://bit.ly/vLecture
Mailto: [email protected]<mailto:[email protected]>
Telephone: +1.810.326.1444
Web: http://www.ipexpert.com/
On Wed, Oct 6, 2010 at 20:07, Di Bias, Steve
<[email protected]<mailto:[email protected]>> wrote:
> Tyson looks like i configured RED instead of WRED?
>
> Sent from my T-Mobile myTouch 3G Slide
>
> ----- Reply message -----
> From: "Di Bias, Steve"
> <[email protected]<mailto:[email protected]>>
> Date: Wed, Oct 6, 2010 4:56 pm
> Subject: [OSL | CCIE_RS] WB1 Lab 21 Task 4
> To: "[email protected]<mailto:[email protected]>"
> <[email protected]<mailto:[email protected]>>,
> "[email protected]<mailto:[email protected]>"
> <[email protected]<mailto:[email protected]>>
>
> So by doing that you proved that you cant enable fair queue after random
> detect but that you can enable random detect after fair queue.
>
> I get that but whats the signifigance?
>
> Sent from my T-Mobile myTouch 3G Slide
>
> ----- Reply message -----
> From: "Tyson Scott" <[email protected]<mailto:[email protected]>>
> Date: Wed, Oct 6, 2010 4:45 pm
> Subject: [OSL | CCIE_RS] WB1 Lab 21 Task 4
> To: "Di Bias, Steve"
> <[email protected]<mailto:[email protected]>>,
> "[email protected]<mailto:[email protected]>"
> <[email protected]<mailto:[email protected]>>
>
> R1(config)#int f0/0
>
> R1(config-if)#rand
>
> R1(config-if)#random-detect
>
> R1(config-if)#fair
>
> R1(config-if)#fair-queue
>
> Must remove RED configuration first.
>
> R1(config-if)#no ran
>
> R1(config-if)#no random-detect
>
> R1(config-if)#fair-queue
>
> R1(config-if)#random-detect
>
> R1(config-if)#
>
> *Oct 7 01:32:21.807: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> FastEthernet0/0, changed state to down
>
> R1(config-if)#
>
> *Oct 7 01:32:25.687: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> FastEthernet0/0, changed state to up
>
> R1(config-if)#do sh int f0/0 | incl Qu
>
> Queueing strategy: random early detection(RED)
>
> R1(config-if)#
>
>
>
> Regards,
>
>
>
> Tyson Scott - CCIE #13513 R&S, Security, and SP
>
> Managing Partner / Sr. Instructor - IPexpert, Inc.
>
> Mailto: [email protected]<mailto:[email protected]>
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> From:
> [email protected]<mailto:[email protected]>
> [mailto:[email protected]] On Behalf Of Di Bias, Steve
> Sent: Wednesday, October 06, 2010 6:03 PM
> To: [email protected]<mailto:[email protected]>
> Subject: [OSL | CCIE_RS] WB1 Lab 21 Task 4
>
>
>
> Hey Everyone!
>
>
>
> In this task we are asked to configure flow-based WRED on the Ethernet
> interfaces of R6, however what I have doesn’t match the DSG.
>
>
>
> In the DSG it shows the first command as “fair-queue” then “random-detect”
> however don’t these two statements conflict with one another?
>
>
>
> Currently my interface queuing shows like this
>
>
>
> R6(config-if)#do sh int e0/0 | i Que
>
> Queueing strategy: random early detection(RED)
>
>
>
> If you try to go back and configure fair-queue on top of it you get the
> following message
>
>
>
> R6(config-if)#fair-queue
>
> Must remove RED configuration first.
>
>
>
> Seems like a mistake?
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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