ME3600x IOS issue

[startx001]

  Hi

After upgrade to 15.3(3)S  and on one switch with 15.3(1)S1  i got error

(config)#interface GigabitEthernet0/11

(config-if)#service-policy output qos-test

Qos: Out of tcam resources to execute command

QoS: Policy attachment failed.  Configuration exceeds hardware resources

for policy qos-test

#show logging

...

Nov 21 15:47:28: %QOSMGR-3-TCAM_EXHAUSTION: Internal Error in resource

allocation

...

bg-ba-m-1#show platform tcam utilization qos

Nile Tcam Utilization per Application & Region:

ES == Entry size == Number of 80 bit TCAM words

==================================================================

App/Region            Start  Num Avail  ES    Used Range  Num Used

==================================================================

QOS                   36864      4096   2

     nile0                                                       13

     nile1                                              

(config-if)#service-policy output qos-test

Qos: Out of tcam resources to execute command

QoS: Policy attachment failed.  Configuration exceeds hardware resources
for policy qos-test

#show logging
...
Nov 21 15:47:28: %QOSMGR-3-TCAM_EXHAUSTION: Internal Error in resource
allocation
...

#show platform tcam utilization qos
Nile Tcam Utilization per Application & Region:
ES == Entry size == Number of 80 bit TCAM words
==================================================================
App/Region            Start  Num Avail  ES    Used Range  Num Used
==================================================================
QOS                   36864      4096   2
     nile0                                                       13
     nile1                                                         6

[caiacamina]

Hi startx001, hope you will be fine.

Did you a find a solution for this issue? 

I'm facing same problem

[LCC Data Networks]

This issue seems to arise when matching any vlan (match vlan 1-4094) on a class-map. It does possibly sound like a bug, but I've now ameneded my class-map to match all traffic based on protocol instead  - this seems like it might work OK.

Class-map match-any class1
 Match protocol ip
 Match protocol ipv6
 Match protocol arp
 Match protocol cdp

[caiacamina · Accepted solution]

Hi startx001 and LCC Data Networks,

This issue is related with TCAM resource exhaustion:

Issue the following command:

sh platform tcam utilization qos and see if you still have available entries to be used:

XXXXXXXXXX#sh platform tcam utilization qos
Nile Tcam Utilization per Application & Region:
ES == Entry size == Number of 80 bit TCAM words
==================================================================
App/Region Start Num Avail ES Used Range Num Used
==================================================================
QOS 36864 4096 2
nile0 1802
nile1 1376

I had to ajdust QoS profiles to free space. 

Hope this help you.

[LCC Data Networks]

Also got the same issue.

[Vinit Jain]

Could you please share the below output:

- show platform tcam utilization all

- show platform tcam utilization qos

- show platform qos label structs

- show sdm prefer current

- show run

Please attach all the above outputs in a file. Also, could you please let me know how many vlans are there on the switch and if the service-policy is being applied on a trunk port.

Thanks 

Vinit

[LCC Data Networks]

I've now got a TAC case open, and the TAC engineer has managed to replicate the fault. I'm waiting to hear back. I've also attached the outputs here for information.

I started with a completely blank config, and applied the following to replicate the error:

class-map match-all voice
 match dscp ef

  
class-map match-any class1
 match vlan 1-4094

policy-map policy1-voice   
 class voice
  priority
  police cir 4000000
   conform-action transmit
   exceed-action drop

policy-map policy1
class class1   
  shape average 40000000
   service-policy policy1-voice 

vlan 1794

int gi0/8
 switchport trunk allowed vlan 1794
 switchport mode trunk
 service-policy output policy1

Qos: Out of tcam resources to execute command
QoS: Policy attachment failed.  Configuration exceeds hardware resources for policy policy1