Re: class-map match

You are absolutely right narbik,

It will be AND operation on match-all command and OR operation only in
situation such u specified in above examples,This is whati have told in my
first reply.

Thanks

On Wed, Jan 20, 2010 at 10:42 PM, Narbik Kocharians <narbikk_at_gmail.com>wrote:

> That is true.
>
> I've been working all night on some labs and i was dealing with weird
> route-maps, and i guess on that last example i mixed the route-map and
> class-map. time to sleep.
>
>
> Thanks
>
> On Wed, Jan 20, 2010 at 10:14 AM, Ryan West <rwest_at_zyedge.com> wrote:
>
>> Well, the combined example of putting a match-any and then listing match
>> clause on two separate lines, having it join to one.
>>
>>
>>
>> *Class-map Match-any TST*
>>
>>
>>
>> * Match dscp 31*
>>
>>
>>
>> * Match dscp 41*
>>
>>
>>
>>
>>
>>
>>
>> And if you do a show run after you configure the above example, the IOS
>> will display it the proper way:
>>
>>
>>
>>
>>
>>
>>
>> *Class-map Match-any TST*
>>
>>
>>
>> * Match dscp 31 41*
>>
>>
>>
>>
>>
>> From my router and my experience:
>>
>>
>>
>> Rack1R1(config)#class-map match-any DSCP-26-24
>>
>> Rack1R1(config-cmap)#match dscp 26
>>
>> Rack1R1(config-cmap)#match dscp 24
>>
>>
>>
>> class-map match-any DSCP-26-24
>>
>> match dscp af31
>>
>> match dscp cs3
>>
>>
>>
>> And the fact that they are really the same. They may behave the same, but
>> they dont read the same and cant glean the same information from them.
If
>> I wanted to figure out if a phone was sending me 24 or 26 for signaling or
>> that a 2950 wasnt configured with the proper CoS to DSCP map, I wouldnt
be
>> able to with your example. Separated I can still show the number of
packets
>> for each and apply whatever QoS functions I want.
>>
>>
>>
>> -ryan
>>
>>
>>
>> *From:* Narbik Kocharians [mailto:narbikk_at_gmail.com]
>> *Sent:* Wednesday, January 20, 2010 1:09 PM
>> *To:* Ryan West
>> *Cc:* Carlos G Mendioroz; ALL From_NJ; Mad_Prof Mad_Prof; estela Mathew;
>> Joe Astorino; Ed Man; GS
>>
>> *Subject:* Re: class-map match
>>
>>
>>
>> Which example are you referring to?
>>
>> On Wed, Jan 20, 2010 at 10:05 AM, Ryan West <rwest_at_zyedge.com> wrote:
>>
>> Right.
>>
>> > -----Original Message-----
>> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>> > Narbik Kocharians
>> > Sent: Wednesday, January 20, 2010 12:48 PM
>> > To: Carlos G Mendioroz
>> > Cc: ALL From_NJ; Mad_Prof Mad_Prof; estela Mathew; Joe Astorino; Ed
>> > Man; GS
>> > Subject: Re: class-map match
>> >
>>
>> > Have a look at the logic and it will make perfect sense:
>> >
>> >
>> >
>> > In the following example, you are matching packets that are marked with
>> > IPP
>> > 4 AND match access-list 100, so the logic says, in order for me to have
>> > a
>> > classification, the packet has to match to what ever I have defined in
>> > the
>> > access-list AND it has to also be marked with IPP4 (since you used
>> > *ip*precedence, it has to be an IPv4 packet as well)
>> >
>> >
>>
>> > > Agreed,
>> > > but they are different, and the difference will be obvious when
>> > > you later on decide to add another line to the class.
>> > >
>> > > So far, I would expect them to behave almost the same, one will have
>> > > more granular counters in show policy though ?
>> > >
>> > > -Carlos
>> > >
>>
>> I still agree with Carlos though, that the combined OR statement vs a
>> listed OR has benefits of both adding more configuration later and the
>> policy map counters:
>>
>> Rack1R1(config-pmap-c)#do show run | s class-map|policy-map
>> class-map match-any DSCP-26-24
>> match dscp af31
>> match dscp cs3
>> class-map match-all DSCP-26-24-oneline
>> match dscp cs3 af31
>> policy-map classify-in
>> class DSCP-26-24
>> class DSCP-26-24-oneline
>>
>> Rack1R1(config-pmap-c)#do show policy-map int
>> Serial0/2/0
>>
>> Service-policy input: classify-in
>>
>> Class-map: DSCP-26-24 (match-any)
>> 0 packets, 0 bytes
>> 5 minute offered rate 0 bps
>> Match: dscp af31 (26)
>> 0 packets, 0 bytes
>> 5 minute rate 0 bps
>> Match: dscp cs3 (24)
>> 0 packets, 0 bytes
>> 5 minute rate 0 bps
>>
>> Class-map: DSCP-26-24-oneline (match-all)
>> 0 packets, 0 bytes
>> 5 minute offered rate 0 bps
>> Match: dscp cs3 (24) af31 (26)
>>
>> Class-map: class-default (match-any)
>> 11 packets, 868 bytes
>> 5 minute offered rate 0 bps, drop rate 0 bps
>> Match: any
>>
>> It might do the same thing, but you might miss a big part of the picture.
>>
>> -ryan
>>
>>
>>
>>
>> --
>> Narbik Kocharians
>> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
>> www.MicronicsTraining.com <http://www.micronicstraining.com/>
>> Sr. Technical Instructor
>> YES! We take Cisco Learning Credits!
>> Training And Remote Racks available
>>
>
>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining.com
> Sr. Technical Instructor
> YES! We take Cisco Learning Credits!
> Training And Remote Racks available

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Received on Sat Jan 23 2010 - 09:03:19 ART