Traffic-shaping traffic with precedence 2 Options

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Hi,

I have a link and traffic from USA enters the network via this link
(together with traffic from Europe). Traffic from USA is marked with
precedence 2. I want to throttle certain IP ranges to only use a
certain amount of traffic that comes in with precedence 2, but am
encountering problems.


This is the config I have so far


class-map match-all precedence2
  match ip precedence 2
class-map match-all client-128-int
  match ip precedence 2
  match access-group 110
!


policy-map international
  class precedence2
   set ip precedence 2
 class client-128-int
   shape average 128000
  class class-default
   set ip precedence 0


on interface s0/2 I try to activate it as follows
service-policy input international.


The policy does not seem to activate, when I issue sh run and look at
the configs of int s0/2 I dont see the service policy. When I remove
"class-map match-all client-128-int
  match ip precedence 2" from the service policy and re-apply to int
s0/2 I can see it in the config and sh policy-map int s0/2 also
returns results.


Am I doing something wrong?




Re: Traffic-shaping traffic with precedence 2 Options
On Wed, 18 Jun 2008 10:39:24 +0200, "tony"

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The description of what you are trying to do seems backwards - i think
you may be trying to do something that is impractical (but i have been
wrong before).

1 problem is that you dont have any control over what is "upstream".

so if you throttle inbound traffic, it has already arrived.
If you are doing this to reduce the inbound traffic as you want it to
stay below a given level, then this is too late, it has already
clogged up your incoming WAN link.

Classic "rate limiting" (and there are lots of different ways to rate
limit, some of which are specific to a platform) happens to "outbound"
traffic.
Maybe if your traffic from USA arrives on a WAN link from a provider,
you can get them to limit before it gets to your site?

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ACL?
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You just matched against Prec2, so not a lot of point setting it....

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i cannot see how the 2nd prec 2 match would ever hit anything?

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can you apply it for outbound OK?

explain what the equipment is, IOS - more details are needed.

golden rule with cisco is if you are not sure - steal a working
example and adapt it.
Then test it in a lab where control the traffic, so you can see what
is happening......
--
Regards

stephen_hope@xyzworld.com - replace xyz with ntl

Re: Traffic-shaping traffic with precedence 2 Options
On Wed, 18 Jun 2008 10:39:24 +0200, tony wrote:

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you can't shape incoming traffic.  If you want to rate-limit inbound
traffic you need to police.
http://www.cisco.com/en/US/tech/tk543/tk545/
technologies_tech_note09186a00800a3a25.shtml

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