Re: Per Port Per Vlan..

From: Venkataramanaiah.R (vramanaiah@gmail.com)
Date: Thu Dec 01 2005 - 05:42:25 GMT-3


Hi,

        Just to make to sure, i understood it correctly, I labbed it up.

        I have the following setup

        R2-Fa0/0---Fa0/17-S1--int Vlan12(on S1)

        I am trying to match all traffic coming from R2 into the
switchport fa0/17 and marking them with Prec 5.

        I have ACL 101 in Vlan12 to verify that marking is working.

        Unfortunately i see that irrespective of whether i match the vlan or
not, i could not see the marking happening.

        Am i doing something wrong here..

Regards
-Venkat

R2#sr int fa0/0
interface FastEthernet0/0
 ip address 134.9.22.2 255.255.255.0

S1(config-if)#do sr int fa0/17
Building configuration...

Current configuration : 112 bytes
!
interface FastEthernet0/17
 switchport access vlan 12
 switchport mode access
 service-policy input test (Same result even if i use withvlan policy here)
end

interface Vlan12
 ip address 134.9.22.7 255.255.255.0
 ip access-group 101 in
end

S1(config-if)#do sac
Standard IP access list 1
    10 permit any
Extended IP access list 101
    10 permit ip any any precedence critical
<-----Nothing Matches here
    20 permit ip any any (113 matches)

S1#sh policy-map
  Policy Map test
    Class all
      set ip precedence 5

  Policy Map withvlan
    Class withvlan
      set ip precedence 5

S1#sh class-map
 Class Map match-all withvlan (id 2)
   Match vlan 12
   Match class-map all

 Class Map match-any class-default (id 0)
   Match any

 Class Map match-all all (id 1)
   Match access-group 1

S1#

On 11/30/05, Chris Lewis <chrlewiscsco@yahoo.com> wrote:
> Good point, with a voice vlan on an access port it would also make sense.
>
> I agree, to get per port per vlan working you need hierarchy of some kind, the following is an example.
>
> class-map match-any dscp_class
> match ip dscp 9
> exit
> class-map match-all vlan_class
> match vlan 10 20-30 40
> match class-map dscp_class
> exit
>
>
> "HIERS, DAVID (AIT)" <dh4578@sbc.com> wrote:
> Per-port/per-vlan is required on the trunk-like-access-ish port that is connected to the typical ip-phone/pc combo.
>
> According to one book, a nested class structure is required to make Per-port/per-vlan work on a 3550.
>
>
> David Hiers
>
> CCIE 10734, CISSP
>
> -###-
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Chris Lewis
> Sent: Tuesday, November 29, 2005 1:05 PM
> To: Venkataramanaiah.R; Cisco certification
> Subject: Re: Per Port Per Vlan..
>
>
> It is perfectly reasonable to configure parent/child class maps for an access port, something like shaping the output to an overall rate, then providing differentiated guarantees for different traffic types within that shaped rate.
>
> Per port per vlan configurations are applied on trunk ports, not access ports.
>
> "Venkataramanaiah.R" wrote:
> Hi,
>
> i would like to know whether it makes any sense to configure the
> parent/child class maps for an access port, if we want to just
> classify some traffic on the given access port.
>
> My understanding is that per port/per vlan applies only to the trunk
> ports.. Correct me if i am wrong.
>
> Regards
> -Venkat
>
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