QOS GTS shaping without effect on cisco ISR G2 2900

[jmolines42]

Hi,

I try to setup a basic GTS shaping on a cisco ISR G2 2900

Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.2(4)M3, RELEASE SOFTWARE (fc2)

Cisco CISCO2901/K9 (revision 1.0) with 1957856K/40960K bytes of memory.

ipbase        ipbasek9      Permanent      ipbasek9

the policy-map was applied to a svi interface (vlan interface)

And my problem is the shape isn't effective, in my attempt the max bw is 20Mb and I have gigabit interface

I know this kind of setup is classic and I see it working on older ios version 12.x

config:

interface VlanX

ip address X X

no ip redirects

no ip proxy-arp

ip ospf dead-interval 2

ip ospf hello-interval 1

ip ospf priority 200

ip ospf retransmit-interval 1

service-policy output shape_qos

end

policy-map shape_qos

class class-default

  shape average 20000000

router#sh policy-map  interface vlanX

VlanX

  Service-policy output: shape_qos

    Class-map: class-default (match-any) 

      3119629 packets, 4367428400 bytes

      5 minute offered rate 67417000 bps, drop rate 0000 bps

      Match: any

      Queueing

      queue limit 64 packets

      (queue depth/total drops/no-buffer drops) 0/0/0

      (pkts output/bytes output) 1612/231119

      shape (average) cir 20000000, bc 80000, be 80000

      target shape rate 20000000

Thanks for any ideas

[paul driver]

Hello
I see you are applying this to the svi?

Is this for rate limting your vlan?

You may need to apply
Mls qos vlan-based on the trunks

Res
Paul


Sent from Cisco Technical Support Android App

[jmolines42]

it's a SVI L3 interface on a router, mls setup is for switch only ?

Abdessamad

[jmolines42]

after made a poc, I found this:

• If I use a integrated interface, policy and shaping works
  
• If I use a port on the etherswitch module, policy works and shaping don't work
  

I tried to upgrade to 15.3(2)T, without effect.

any ideas ?

Thanks

Abdessamad

[paolo bevilacqua]

That is normal, certain QoS commands are not supported at level of individual switched ports, because the are not layer 3 ports.

Apply them on the VLAN interface instead.

[ravikantt · Accepted solution]

  Hi Jacques,

I think GTS is not sported on SVI on ISRs as per below cisco link.

Class-Based Traffic Shaping	Provides Generic Traffic Shaping based on user defined traffic class	No
Generic-Traffic Shaping	Limits the transmission rate of data to match the speed of the remote, target interface and helps ensure that the traffic conforms to policies contracted for it	No

http://www.cisco.com/en/US/prod/collateral/routers/ps5853/prod_white_paper0900aecd8064c9f4.html

and you'll see there policing is supported which was also happening in your case.

Policing

Limits the input or output transmission rate on SVI and specifies traffic handling policies when the traffic either conforms to or exceeds the specified rate limits

Yes (15.1(1)T or later)

[jmolines42]

thanks ashok

Abdessamad