[c-nsp] QOS on ME3600 (service instance)

CiscoNSP List cisconsp_list at hotmail.com
Mon Sep 22 03:15:58 EDT 2014

No - As this is a trunk port, with multiple vlans (And service instances)....We only want to apply service policies to "some" of the vlans/service instances

The service policy seems to be working, it's just not reporting any drops with "sh ethernet service instance policy-map"

From: pshem.k at gmail.com
Date: Mon, 22 Sep 2014 18:40:30 +1200
Subject: Re: [c-nsp] QOS on ME3600 (service instance)
To: cisconsp_list at hotmail.com
CC: cisco-nsp at puck.nether.net

Do you have a port-level outbound service policy in your config as well as the EVC-one?
kind regardsPshem

On 22 September 2014 14:51, CiscoNSP List <cisconsp_list at hotmail.com> wrote:
Hi Everyone,

Ive configured a simple test to ensure egress shaping is working under a service instance (As you cannot apply service policy to vlan interface).

policy-map TEST_1MB   class class-default  shape average 98000  <- Actually set to 98kb for testing

interface GigabitEthernet0/3


 service instance 6 ethernet

  service-policy output TEST_1MB

  bridge-domain 6

interface Vlan6

 description p-t-p-link-to-1841-1

 ip vrf forwarding TEST3

 ip address

 no ip proxy-arp

It "appears" to work - i.e. with no policy applied:

#ping vrf TEST3 size 1500 df-bit repeat 100  <- This is to an 1841 connected to port Gig0/3 on the ME

Type escape sequence to abort.

Sending 100, 1500-byte ICMP Echos to, timeout is 2 seconds:

Packet sent with the DF bit set



Success rate is 100 percent (100/100), round-trip min/avg/max = 1/2/4 ms

Same test, with policy-map applied to service instance:

ping vrf TEST3 size 1500 df-bit repeat 100

Packet sent with the DF bit set



Success rate is 100 percent (100/100), round-trip min/avg/max = 1/118/128 ms

i.e. Latency increases, so I can only assume the shaping is working....I have tried reducing the shaping to 1000 (1kb), and see packet-loss...remove service-policy, and latency returns to normal, and no loss.

#sh ethernet service instance policy-map

  GigabitEthernet0/3: EFP 6

  Service-policy output: TEST_1MB

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

      100 packets, 151800 bytes

      30 second offered rate 0000 bps, drop rate 0000 bps

      Match: any

  Traffic Shaping

    Average Rate Traffic Shaping

    Shape 98 (kbps)

      Output Queue:

        Default Queue-limit 49152 bytes

        Tail Packets Drop: 0

        Tail Bytes Drop: 0

Is this a cosmetic bug, or is there another command that will show drops?



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