[c-nsp] 4900M with QoS on a portchannel

[Mack McBride]

QOS is generally applied on the input direction for port channels and that works fine.
Output QOS is generally much more limited.
Ie. You can't do classification on output and those kinds of things.
This is very platform specific.

Mack McBride
Network Architect

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jorge L. Rodriguez Aguila
Sent: Thursday, December 09, 2010 6:47 AM
To: Pshem Kowalczyk; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] 4900M with QoS on a portchannel

QOS can never be applied on Port Channels because they are logical interfaces. The QoS on most Cisco Devices is done at the ASIC level and so it can only be done on physical interfaces, the port channel will pass the packets to the Physical Ifs and these in turn will apply the service policy on egress.


Jorge Rodriguez,CCNP-Voice
Senior Voice/Data Consultant
Netxar Technologies
PCS 7876888530
jorge.rodriguez at netxar.com





-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Pshem Kowalczyk
Sent: Wednesday, December 08, 2010 8:16 PM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] 4900M with QoS on a portchannel

Hi,

I must be missing something obvious here, so please stay with me. I'm
currently devising config for the device.
We have a 4900M that will be connected over 2x10G to a customer. I
want to apply a very simple QoS in this scenario - mark packets on
input and act on that on output:


class-map match-any CUST-SW-IN-PRIO
 match cos  5 6
class-map match-any CUST-SW-IN-AF4
 match cos  4
class-map match-any CUST-SW-IN-AF1
 match cos  2  3

class-map match-any CUST-SW-OUT-PRIO
  match qos-group 15
class-map match-any CUST-SW-OUT-AF4
   match qos-group 14
class-map match-any CUST-SW-OUT-AF1
  match qos-group 11

policy-map CUST-SW-IN-INPUT
 class CUST-SW-IN-PRIO
  set qos-group 15
 class CUST-SW-IN-AF4
  set qos-group 14
 class CUST-SW-IN-AF1
  set qos-group 11
 class class-default


policy-map CUST-SW-OUT-OUTPUT
 class CUST-SW-OUT-PRIO
   priority
   police rate percent 37
 class class-default

The idea is that there should never be more then 37% of CoS 5 and CoS
6 traffic leaving the interface. All ingress interfaces have the
CUST-SW-IN-INPUT policy applied (on either physical interfaces, or
PortChannels).
When I try to apply the output policy I get the following:

1. On physical interface (member of the portchannel):

ASAUESD01(config)#int te1/1
ASAUESD01(config-if)#service-policy output CUST-SW-OUT-OUTPUT
% A service-policy with non-queuing actions should be attached to the
port-channel associated with this physical port.

2. On a portchannel:

ASAUESD01(config-if)#int po1
ASAUESD01(config-if)#service-policy output CUST-SW-OUT-OUTPUT
% A service-policy with queuing actions can be attached in output
direction only on physical ports.

What am I missing here?
software:  Version 12.2(53)SG1 (cat4500e-IPBASEK9-M)
hardware: WS-C4900M

kind regards
Pshem
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