[cisco-voip] QoS ?

[Jonathan Charles]

Also, I cannot recommend enough the QoS Book for the 642-642 exam by Odam, a
great book... It basically reads itself... the best Cisco Press book I have
ever read (for downright usefulness the Configuring Cisco CallManager and
Unity by Bateman...



On 3/20/06, Bell, Joe <Joe_Bell at adp.com> wrote:
>
>  Yes, cs3 is precedent 3. You could get by with just cs3.  If you guys are
> going for the CCIE Voice, make sure you know your QoS inside and out.
>
>
>
> Joe
>
>
>  ------------------------------
>
> *From:* Wydra, Jason [mailto:jwydra at Burwood.com]
> *Sent:* Monday, March 20, 2006 10:57 AM
> *To:* Bell, Joe; Voll, Scott; Cisco Voip
> *Subject:* RE: [cisco-voip] QoS ?
>
>
>
> You want a quick 101 on QoS and DSCP you might want to check out this
> link……..
>
>
>
>
> http://www.cisco.com/en/US/tech/tk543/tk757/technologies_tech_note09186a00800949f2.shtml
>
>
>
> Also, with the following class map, wouldn't the CS3 and precedence 3
> statements be redundant? Couldn't you just get by with one of them? Since
> both effectively are 011000
>
>
>
> class-map match-any VoIP-ctrl
>
>  match ip dscp cs3
>
>  match ip dscp af31
>
>  match ip precedence 3
>
>
>
>
>
> *Jason Wydra*
>
> *Consultant*
>
> *burwood* *group, inc.*
>
>
>
>
>  ------------------------------
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Bell, Joe
> *Sent:* Monday, March 20, 2006 12:49 PM
> *To:* Voll, Scott; Cisco Voip
> *Subject:* Re: [cisco-voip] QoS ?
>
>
>
> You want to use match-any.  Match-all means the packet must match all
> criteria defined in your map or it does not match.  Match-any is any single
> description in your maps.  Currently, your signaling map does not match any
> of the traffic you're trying to classify due to this behavior.  AF31 is bit
> structure 011010 and CS3 is 011000.  There won't be a packet that matches
> both.  You want it to be an "either" statement, not an "and" so use
> match-any.  Also, if you use match-any, you can collapse your class-maps for
> signaling into one map rather than two, which is cleaner.  Here is a
> collapsed map that works.
>
>
>
> class-map match-any VoIP-ctrl
>
>  match ip dscp cs3
>
>  match ip dscp af31
>
>  match ip precedence 3
>
> class-map match-any VoIP
>
>  match ip dscp ef
>
>  match ip precedence 5
>
> .
>
>
>
> Joe Bell
>
>
>
>
>
>
>
>
>
>
>  ------------------------------
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Voll, Scott
> *Sent:* Monday, March 20, 2006 10:20 AM
> *To:* Cisco Voip
> *Subject:* [cisco-voip] QoS ?
>
>
>
> I have yet to take the QoS class so can someone give some advice:
>
>
>
> I just these class maps:
>
>
>
> class-map match-all WAN2LAN-VoIP-ctrl
>
>  match ip dscp af31
>
>  match ip dscp cs3
>
> class-map match-all VoIP-ctrl
>
>  match ip dscp cs3
>
>  match ip dscp af31
>
>  match ip precedence 3
>
> class-map match-all VoIP
>
>  match ip dscp ef
>
>  match ip precedence 5
>
> class-map match-all WAN2LAN-VoIP
>
>  match ip dscp ef
>
>
>
> is this correct or should I be using match-any.
>
>
>
> Thanks in advance
>
>
>
> Scott
>  ------------------------------
>
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