Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

How to see QoS Policy drops using LMS 3.2?

How can I configure LMS 3.2 to show us if any of our 50+ router's QoS policies are dropping packets?  Specifically we have output policies applied to our WAN interfaces and I would like something that will tell me if any of my routers have dropped packets based on those policies...more or less in real time.

Thanks in advance.

Everyone's tags (1)
Cisco Employee

Re: How to see QoS Policy drops using LMS 3.2?

You can install the Health and Utilization Monitor add-on, then load the CISCO-CLASS-BASED-QOS-MIB, then define a template to look at drops for a given policy.  Once you have a poller defined using that template, you can watch the drops in real-time using the LiveGraphIt portlet on the HUM portal view.


Re: How to see QoS Policy drops using LMS 3.2?

Depending on what flavor of QoS your network has, one way is to generate reports in the 90-day trial version of HUM that comes with LMS 3.2 but separately licensed. If it's Cisco class-based QoS, as a prerequisite, you'll need to load at least the CISCO-CLASS-BASED-QOS-MIB in HUM. If it's the legacy Cisco CAR/DCAR, load CISCO-CAR-MIB. Depending on how your QoS policies are defined, here're some of the SNMP OIDS to have HUM graph for:

"cbQosCMPrePolicyPkt"           ""
"cbQosCMPrePolicyPkt64"         ""
"cbQosCMPrePolicyByteOverflow"          ""
"cbQosCMPrePolicyByte"          ""
"cbQosCMPrePolicyByte64"                ""
"cbQosCMPrePolicyBitRate"               ""
"cbQosCMPostPolicyByteOverflow"         ""
"cbQosCMPostPolicyByte"         ""
"cbQosCMPostPolicyByte64"               ""
"cbQosCMPostPolicyBitRate"              ""
"cbQosCMDropPktOverflow"                ""
"cbQosCMDropPkt"                ""
"cbQosCMDropPkt64"              ""
"cbQosCMDropByteOverflow"               ""
"cbQosCMDropByte"               ""
"cbQosCMDropByte64"             ""
"cbQosCMDropBitRate"            ""

In IOS 12.4(4)T and later, one can configure the "snmp mib persist cbqos" global command so your CBQOS policies do not change SNMP indices everytime the policies get changed or after a router reboot, which could throw reporting tools such as HUM off.

Another way is to directly monitor the above QoS OIDs with EEM on IOS and generate syslog/snmp events accordingly. As a conceptual example:

event manager applet cbQosCMDropBitRate
event snmp oid "[ifIndex-of-a-specific-policy]" get-type exact entry-op ge entry-val "##" poll-interval ##


action 5 syslog priority errors msg "cbQosCMDropBitRate $_snmp_oid_val"

The resulting syslog can then be sent to the LMS box for Syslog Analysis and/or Automated Action, or the SNMP trap to the enterprise NMS (such as HPOV NNM) for action.

New Member

Re: How to see QoS Policy drops using LMS 3.2?

LMS won't let me load the  LMS gives me the "Unable to load the MIB file error."

CISCO-CAR-MIB loaded just fine.

Today I downloaded from the Cisco web site.

I verified that I have the following .my files on my LMS server in the mibs directory.









What am I missing?

Cisco Employee

Re: How to see QoS Policy drops using LMS 3.2?

You need the RFC1315-MIB as well.  Place this file in the MIBs directory, then the CBQOS-MIB should load.

New Member

Re: How to see QoS Policy drops using LMS 3.2?


Thank you for attaching RFC1315-MIB.  Howerver, where do I find that on the Cisco web site?  I'd rather find the official version off and load that into my LMS.

Also, what was your clue that I am missing RFC1315-MIB?  Is there a list of dependencies that haven't found?

Thank you,


Cisco Employee

Re: How to see QoS Policy drops using LMS 3.2?

This is the official MIB.  It is sometimes called the FRAME-RELAY-DTE-MIB.  However, it is referred to by RFC1315-MIB, so that is how it much be named.  I uploaded the MIB here to save you steps.  The Cisco link is:

This MIB is referenced by the CISCO-FRAME-RELAY-MIB.  You need to recursively satisfy ALL dependencies in order to be able to load MIBs in HUM.