RE: QOS for MPLS VPNs

From: Mohammad Dewan (dewan@fasttelco.net)
Date: Wed Aug 17 2005 - 22:01:30 GMT-3


hi Zahid

hope that sample help u can find it within the link:
http://www.cisco.com/en/US/partner/products/hw/switches/ps708/products_confi
guration_guide_chapter09186a008038720d.html#wp1442020

Router# configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)# class-map exp3

Router(config-cmap)# match mpls experimental topmost 3

Router(config-cmap)# exit

Router(config)# policy-map exp3

Router(config-pmap)# class exp3

Router(config-pmap-c)# police 1000000 8000000 conform-action transmit
exceed-action drop

Router(config-pmap-c)# exit

Router(config-pmap)# end

Router# show class exp3

 Class Map match-all exp3 (id 61)

   Match mpls experimental topmost 3

Router# show policy-map exp3

  Policy Map exp3

    Class exp3

     police cir 1000000 bc 8000000 be 8000000 conform-action transmit
exceed-action drop

Router# show running-config interface f3/27

Building configuration...

Current configuration : 173 bytes

!

interface FastEthernet3/27

  ip address 47.0.0.1 255.0.0.0

  tag-switching ip

 end

Router# configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)# interface fastethernet 3/27

Router(config-if)# service-policy input exp3

Router(config-if)#

Router#

Enter configuration commands, one per line. End with CNTL/Z.

Router# show running-config interface fastethernet 3/27

Building configuration...

Current configuration : 173 bytes

!

interface FastEthernet3/27

  ip address 47.0.0.1 255.0.0.0

  tag-switching ip

  service-policy input exp3

 end

Router#

regards

dewan
-----Original Message-----
From: Zahid Hassan [mailto:zhassan@gmx.net]
Sent: Thursday, August 18, 2005 1:24 AM
To: C&S GroupStudy; R&S CCIE GroupStudy
Subject: QOS for MPLS VPNs

Dear All,

I would be really grateful if someone could suggest or
propose any config for implementing QOS for MPLS VPNs.

I have the following scenario:

CE1 -->PE1-->PE2-->CE2

I understand that it is possible to mark and match DSCP and MPLS EXP bits as
follows:

DSCP (CE1)-->EXP(PE1)--->EXP(PE2)--->DSCP(CE2)

I am being able to match DSCP bits from CE on PE and apply whatever policing
required.
I can also set MPLS EXP bits on PE according to matched DSCP bits from CE.

What I have not being able to understand is how my set MPLS EXP bits will be
carried to the other PEs ?
Will I need to apply any service policy to carry MPLS EXP bits from PE to
the other ?

Regards,

Zahid



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