Re: QoS for mVPN

From: Harindha Fernando (pottaharry@gmail.com)
Date: Wed Aug 06 2008 - 11:38:05 ART


Hi,

we are using the following output policy-map in MPLS interface,

class-map match-any E-RT-VIDEO
  match ip dscp cs4
  match ip dscp af41
  match ip dscp af42
  match ip dscp af43
  match mpls experimental topmost 4
class-map match-any E-RT-VOICE
  match ip dscp ef
  match mpls experimental topmost 5
class-map match-all I-CCTV-SCAVENGER
  match access-group name TRAFFIC-MULTICAST
class-map match-any E-SCAVENGER
  match ip dscp cs1
  match mpls experimental topmost 1
class-map match-all I-CCTV-LLMULTIMEDIA
  match access-group name TRAFFIC-UNICAST
class-map match-any E-LL-MULTIMEDIA
  match ip dscp cs3
  match ip dscp af31
  match ip dscp af32
  match ip dscp af33
  match mpls experimental topmost 3
class-map match-any E-LL-DATA
  match ip dscp cs2
  match ip dscp af21
  match ip dscp af22
  match ip dscp af23
  match mpls experimental topmost 2
!
policy-map E-POL-FLEX-CHILD
  class E-RT-VOICE
    priority 2800
   set mpls exp topmost 5
  class E-RT-VIDEO
    bandwidth percent 10
    random-detect dscp-based
   set mpls exp topmost 4
  class E-LL-MULTIMEDIA
    bandwidth percent 25
    random-detect dscp-based
   set mpls exp topmost 3
   set ip dscp cs3
  class E-LL-DATA
    bandwidth percent 15
    random-detect dscp-based
   set mpls exp topmost 2
  class E-SCAVENGER
    bandwidth percent 1
    random-detect dscp-based
   set mpls exp topmost 1
  class class-default
   set mpls exp topmost 0
    random-detect
policy-map E-POL-FLEX
  class class-default
    shape average 20000000
   service-policy E-POL-FLEX-CHILD

interface GigabitEthernet1/0/0
 description *** Connected to PE7 -Gi1/0/0 *
 dampening
 mtu 1536
 bandwidth 20000
 ip address 172.20.6.1 255.255.255.252
 no ip redirects
 ip router isis
 ip pim sparse-mode
 load-interval 30
 carrier-delay msec 0
 speed 100
 no negotiation auto
 mpls ip
 bfd interval 100 min_rx 100 multiplier 3
 cdp enable
 isis circuit-type level-2-only
 isis network point-to-point
 isis authentication mode md5
 isis authentication key-chain MOI
 isis bfd
 service-policy output E-POL-FLEX

class-map match-all TEST
  match access-group 15

policy-map I-POL-CCTV
  class TEST
   set ip dscp cs3

interface Vlan10
 description ### Multicast-server ###
 ip vrf forwarding CCTV
 ip address 192.168.6.1 255.255.255.0
 no ip redirects
 ip pim sparse-mode
 service-policy input I-POL-CCTV

Rgds,
Harin

On Wed, Aug 6, 2008 at 5:24 PM, Robert McCallum <rmccallum@thrupoint.net>wrote:

> Your multicast traffic is IP based on not MPLS based. So where normally an
> outbound policy would look like ...
>
> Match mpls exp 5
>
> You also need to match your ip equivalent e.g. match ip dscp ef
>
> Common mistake when it comes to multicast in MVPN. Just remember that you
> can tear down an mpls neighbour which you know multicast traffic runs
> across
> and it still works, whereas all ip non multicast traffic is blackholed.
>
> Watchout on the GSR's and on some linecards as multicast is only ever put
> into the default queue.
>
> HTH
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> > Behalf Of Harindha Fernando
> > Sent: 06 August 2008 14:14
> > To: comserv@groupstudy.com; ccielab@groupstudy.com
> > Subject: QoS for mVPN
> >
> > Hi,
> >
> > I have been trying to set QoS for mVPN in MPLS QoS but I am
> > still unable to achieve it. below is the scenario...
> >
> > Reciever1 -->PE1-->P1-->P2-->PE2--->Source
> > |
> > |
> > P3--->PE3--->Receiver2
> >
> > Core - PIM SSM
> > Customer mVPN - PIM-SSM with static SSM mapping
> >
> > mVPN is working fine, but I need to offer some QoS in the core.
> >
> > at PE2 customer interface I have a input policy-map setting
> > all muliticast traffic on that interface, set to DSCP AF41.
> > the MPLS interface towards core I have an output policy
> > allocating BW based on dscp or exp marking and also I do set
> > exp values. DSCP AF41 = Exp 4
> >
> > when I put a output policy in the PE1 and PE3 customer
> > interfaces to match DSCP AF41 I do not see any matching packets.
> >
> > since mVPN traffic is going through GRE tunnels I don't see
> > any possibility of setting the DSCP values in the GRE header
> > as this Tunnel interfaces are not configurable.
> >
> > can any body tell how can we achieve the QoS for mVPN ?
> >
> > I am using 7600s with RSP720 and 12.2(33)SRC1.
> >
> >
> > Rgds,
> > Harin
> >
> > _____________________________________________________________________
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> >
>
>
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