Nexus 3000 - QoS - Traffic Shaping

[ldesmasures]

Hello,

We have ressources connected to Nexus 3000 in version 6.x and we want to limit traffic bandwidth between those ressources (two servers).

The diagram is as bellow :

Server1 <---> (Eth1/2) Nexus-3k-1 (Po3) <---> L2 Wan <---> (Po3) Nexus-3k-2 (Eth1/2) <---> Server2

The objective is to use QoS Traffic Shaping on Nexus 3000 but after some tests it doesn't work.

Here the configuration from one of the Nexus 3000 :

ip access-list ACL_Sync-Srv
  10 permit ip 22.1.2.0/24 35.1.2.0/24

class-map type qos match-all CM_Classif_Sync-Srv
  match access-group name ACL_Sync-Srv

class-map type queuing CM_Shape_Sync-Srv
  match qos-group 5

policy-map type qos PM_Classif_Sync-Srv
  class CM_Classif_Sync-Srv
    set qos-group 5
  class class-default

policy-map type queuing PM_Shape_Srv-Sync
  class type queuing CM_Shape_Sync-Srv
    shape kbps 1024
  class type queuing class-default

  
interface Ethernet1/2
  switchport access vlan xxx
  spanning-tree port type edge
  storm-control broadcast level 5.00
  storm-control multicast level 5.00
  service-policy type queuing output PM_Shape_Srv-Sync

interface port-channel3
  switchport mode trunk
  speed 10000
  storm-control broadcast level 5.00
  storm-control multicast level 5.00
  service-policy type qos input PM_Classif_Sync-Srv
  vpc xx

Thanks for your help.

Regards.

[Roger Gore · Accepted solution]

Hi,

I suppose you have this figured out by now but for the benefit of others it's important to note that the n3ks require three class-maps and three policy-maps, one each for type qos, type network-qos and type queueing.  Looks like you are missing the type network-qos class-map and policy-map.

I recommend the Cisco Live presentation by Mike Herbert regarding qos on the nexus line - demystified some things for me... link follows (registration req'd):

https://www.ciscolive.com/online/connect/sessionDetail.ww?SESSION_ID=2866

Best,

roger

[yulliu]

I met similar issue. However, I didn't find the weblink that you mentioned in Cisco live website. Could you please share link ? Thank you.