Topic Links

Queuing Principles in Cisco IOS
http://wiki.nil.com/Queuing_Principles_in_Cisco_IOS

Policing vs shaping
http://wiki.nil.com/Policing_vs_shaping

QoS Policing in Cisco IOS
http://wiki.nil.com/QoS_Policing_in_Cisco_IOS

Traffic shaping in Cisco IOS
http://wiki.nil.com/Traffic_shaping_in_Cisco_IOS

Layer 3 QoS: IP ToS, Precedence, CoS, IntServ, and DiffServ Codepoints
http://etutorials.org/Networking/Integr ... odepoints/

QoS (Quality of Service) Features
http://www.netcraftsmen.net/resources/a ... s/435.html

QoS Tutorial
blog/?p=49

QoS Wiki
http://mynetworkingwiki.com/index.php/QoS

RSVP Protocol Overview
http://www.isi.edu/rsvp/overview.html

Learn the benefits of Cisco AutoQoS
http://www.techrepublic.com/article/lea ... os/6134065

Configure QoS on your Cisco router with this template
http://www.techrepublic.com/article/con ... te/6136216

Limit bandwidth on a Cisco Catalyst switch port
http://www.techrepublic.com/blog/networ ... h-port/404

Policing and Shaping - Token Bucket Principles
http://www.perihel.at/2/rno/04-QoS-Poli ... haping.pdf

Understanding WRR Queue Parameters
http://blog.ine.com/2008/07/20/undestan ... arameters/

Congestion Management Overview
http://www.cisco.com/en/US/docs/ios/12_ ... conmg.html

A Two Rate Three Color Marker
http://tools.ietf.org/html/rfc2698

A Single Rate Three Color Marker
http://tools.ietf.org/html/rfc2697


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one more

QoS
http://mynetworkingwiki.com/index.php/QoS

Added, ty.

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Hell yeah. Thanks. This may be my next exam. Not sure which CCIP of the 3 I want to do first though.

most certainly do BGP before MPLS, there is a ton of BGP on the MPLS exam.

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"If you're good at anticipating the human mind. It leaves nothing to chance."
-Jigsaw

I don't know if it's "general knowledge", but to convert AF values to DSCP:

AF vw --> DSCP xy

xy = (v*8)+(w*2)

Example AF 43:
AF (4x8)+(3*2) = DSCP 38

Example AF 22:
AF (2x8)+(2x2) = DSCP 20

I seriously don't know if I just "invented" this shortcut or not, but christ I'm happy.


edit
awwww man I didn't invent it, actually this guy explains it exactly the same way:
http://dreamforccie.wordpress.com/2010/ ... s-so-easy/

It can be done by remembering how many bits the different markings use. For example CoS uses three bits to mark. DiffServ uses 6. ToS is 6 bit DSCP + 2 bits for ECN.

Example :

CoS : 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7
DSCP : 0 , 8 , 16, 24 , 32 , 46 , 48 , 56

dscp = cos X 8
for AF it's just that plus those 2 bits. The way I see it is that you;ll go mad if you try to get this stuff or remember it. It has no importance whatsoever. None. Mark on L2 or L3 , do the what u need to do and don't think about it. It is relevant only when doing mappings and I seriously doubt that a provider maps that shit. They do communities that only transport Ip precedence.
Also there is a command like sh mls qos map(s) cos-dscp (or other maps). There are the DSCP mutations. Again... you have to be really mad to learn these

Btw : http://www.cisco.com/en/US/docs/ios/qos ... _book.html

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Stay the curse !

Thanks for the info. I realize they have many exams they don't have books for, but I didn't think an entry level exam would be a good place to do that. Thanks again.

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Hadriya

The now retired QoS exam had the telephony guide written by Odem...

642-642 QoS is actually not retired, yet. Its still usable against CCNP Voice and some Telephony Specialist cert. Also hardly an entry level exam eh

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som om sinnet hade svartnat för evigt.

Ah my bad, I thought the 642 retired with the CCIP.