RE: QOS Question

From: Tony Schaffran (groupstudy@cconlinelabs.com)
Date: Wed Jun 20 2007 - 00:52:20 ART


Well, that example contradicts everything I have read to this point.
 
And, obviously from your first example, the match-any does not work as
intended.
 
Maybe somebody else can chime in with more information.
 

Tony Schaffran

Network Analyst

CCIE #11071

CCNP, CCNA, CCDA,

NNCDS, NNCSS, CNE, MCSE

 

www.cconlinelabs.com <http://www.cconlinelabs.com/>

Your #1 choice for online Cisco rack rentals.

 

 

  _____

From: Kamal Dissanayaka [mailto:kamalasiri@gmail.com]
Sent: Tuesday, June 19, 2007 8:45 PM
To: groupstudy@cconlinelabs.com
Cc: ccielab@groupstudy.com
Subject: Re: QOS Question

Thanks tony,
 
But it is very confusing
 
See the bellow example from , page 3-14 of
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns432/c649/ccmigrati
on_09186a008049b062.pdf
<http://www.cisco.com/application/pdf/en/us/guest/netsol/ns432/c649/ccmigrat
ion_09186a008049b062.pdf>
 
class-map match-all Interactive Video

match ip dscp af41 af42 ! Recommended markings for IP/VC

class-map match-any Call Signaling

match ip dscp cs3 ! Future Call-Signaling marking

match ip dscp af31 ! Current Call-Signaling marking

  
in above example,
first one match all does it mean it should match both af41 af42 ?
and second one
it should match cs3 and af31 or any one of those ?
 
does this apply to all match commands like nbar " match ip protocol " ?
 
Best Regards
 
Kamal

 
On 6/20/07, Tony Schaffran <groupstudy@cconlinelabs.com> wrote:

The way I am deciphering the command reference, if you use the match-any
option and have several match statements like match ip dscp, match
access-group and match protocol, it will match one or more of the criteria.

In your example, you have several match ip dscp. Maybe it is seeing them as
one criteria then applying the Boolean Logic AND to that one criteria.

Tony Schaffran
Network Analyst
CCIE #11071
CCNP, CCNA, CCDA,
NNCDS, NNCSS, CNE, MCSE

www.cconlinelabs.com
Your #1 choice for online Cisco rack rentals.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Kamal Dissanayaka
Sent: Tuesday, June 19, 2007 8:04 PM
To: groupstudy@cconlinelabs.com
Cc: ccielab@groupstudy.com
Subject: Re: QOS Question

Hi Tony,

Thanks a lot for your help,

I wonder match-any and amtch-all key word in class-map does ?
Thats the one confused me.

Best Regards

Kamal

On 6/20/07, Tony Schaffran < groupstudy@cconlinelabs.com> wrote:
>
> Are you familiar with Bolean Logic and how it relates to class maps?
>
> Your first class map, the packet would need to match af41 AND cs4 AND af42

> AND cs6 which would be impossible.
>
> Your second class map, the packet only needs af41 OR cs4 OR af42 OR cs6.
>
>
> Tony Schaffran
> Network Analyst
> CCIE #11071
> CCNP, CCNA, CCDA,
> NNCDS, NNCSS, CNE, MCSE
>
> www.cconlinelabs.com
> Your #1 choice for online Cisco rack rentals.
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Kamal Dissanayaka
> Sent: Tuesday, June 19, 2007 4:47 PM
> To: ccielab@groupstudy.com
> Subject: QOS Question
>
> Dear all,
>
> Can somebody expalin me about bellow two class-map configs need to perform

> same or different functions ? Policy-map is applied on on egress of a WAN
> link.
>
> 1. class-map match-any MM-LOW
> match ip dscp af41
> match ip dscp cs4
> match ip dscp af42
> match ip dscp cs6
>
> With this config there is no matches on this class map and all goes
> through
> default-class see the out put bellow , I get confirmed with access list
> there are packets comming with dscp cs6.
>
> Class-map: MM-LOW (match-any)
> 0 packets, 0 bytes
> 30 second offered rate 0 bps, drop rate 0 bps
> Match: ip dscp af41 (34)
> 0 packets, 0 bytes
> 30 second rate 0 bps
> Match: ip dscp cs4 (32)
> 0 packets, 0 bytes
> 30 second rate 0 bps
> Match: ip dscp af42 (36)
> 0 packets, 0 bytes
> 30 second rate 0 bps
> Match: ip dscp cs6 (48)
> 0 packets, 0 bytes
> 30 second rate 0 bps
> Queueing
> Output Queue: Conversation 137
> Bandwidth remaining 40 (%)Max Threshold 64 (packets)
> (pkts matched/bytes matched) 0/0
> (depth/total drops/no-buffer drops) 0/0/0
>
> 2. class-map match-any MM-LOW
> match ip dscp cs4 af41 af42 cs6
>
> When I configure the class-map in this way it matches the packet. see the
> out put bellow,
>
> Class-map: MM-LOW (match-any)
> 187 packets, 168760 bytes
> 30 second offered rate 22000 bps, drop rate 0 bps
> Match: ip dscp cs4 (32) af41 (34) af42 (36) cs6 (48)
> 0 packets, 0 bytes
> 30 second rate 0 bps
> Queueing
> Output Queue: Conversation 137
> Bandwidth remaining 40 (%)Max Threshold 64 (packets)
> (pkts matched/bytes matched) 0/0
> (depth/total drops/no-buffer drops) 0/0/0
>
>
> Best Regards
>
> Kamal
>
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