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Table Of Contents

MIBs Used and SNMP Traps Generated


MIBs Used and SNMP Traps Generated

MIBS Used

Service Monitor uses the CISCO-SYSLOG-MIB to generate SNMP traps.

SNMP Traps Generated

Cisco Unified Service Monitor (Service Monitor) generates the following traps:

•MOS violation

•Cisco 1040 unreachable

Trap details are provided as name-value pairs in clogHistMsgText field of the clogMessageGenerated notification. Table C-1 lists details of the MOS violation SNMP trap.

Table C-1 MOS Violation SNMP Trap 

TAG
Description
Value

TT

Trap type

1: Data from sensor

3: Data from Cisco Unified Communications Manager (Unified Communications Manager) cluster

01

Cisco 1040 sensor MAC address (when TT = 1) or Unified Communications Manager cluster ID (when TT = 3)

Text string.

02

Time stamp

<YYYYMMDDhhmm>

03

Threshold value

Sample value: 3.5.

A

Flag indicating actual or sampled data

0: Actual

1: Sampled (not used)

B

Source device IP address. The source device can be:

•An IP phone or a voice gateway (when TT = 1 and TT = 3).

•A remote Unified Communications Manager (when TT = 3 and the call is an intercluster call).

IPv4 address, for example:

172.20.4.18

D

Codec of call data record (see also CDC in this table).

One of these:

2: G711Alaw 64k

3: G711Alaw 56k

4: G711Ulaw 64k

5: G711Ulaw 56k

6: G722 64k

7: G722 56k

8: G722 48k

10: G728

11: G729

12: G729AnnexA

15: G729AnnexB

16: G729AnnexAwAnnexB

E

MOS score calculated by the sensor (when TT = 1) or CVTQ (when TT = 3).

Sample value: 3.4

F

Primary cause of call degradation.

When TT = 1:

•J: Jitter

•P: Packet Loss

When TT = 3, N/A

G

Actual packet loss in the previous minute.

Sample value: 0.0.

H

Actual jitter in milliseconds in the previous minute.

Sample value: 0

Value is NA when TT = 3

CDC

Codec of call data record.

One of these:

•G711Alaw64k

•G711Alaw56k

•G711Ulaw64k

•G711Ulaw56k

•G722 64k

•G722 56k

•G722 48k

•G728

•G729

•G729AnnexA

•G729AnnexB

•G729AnnexAwAnnexB

CCR

Cumulative Concealment Ratio—Cumulative ratio of concealment time over speech time observed after starting a call.

Sample value: 0.0

Value is NA when TT = 1

ICR

Interval Concealment Ratio—Interval-based average concealment rate; the ratio of concealment time over speech time for the last three seconds of active speech.

Sample value: 0.0

Value is NA when TT = 1

ICRmx

Interval Concealment Ratio Max—Maximum concealment ratio observed during the call.

Sample value: 0.0

Value is NA when TT = 1

CS

Concealment Seconds—Number of seconds during which some concealment is observed during a call.

Sample value: 0

Value is NA when TT = 1

SCS

Severely Concealed Seconds—Number of seconds during which a significant amount of concealment is observed. If, on average, the observed concealment is greater than fifty milliseconds or approximately five percent, speech is probably not very audible.

Sample value: 0

Value is NA when TT = 1

MLQK

MOS Listening Quality or CVTQ Score—The Cisco Voice Transmission Quality (CVTQ) algorithm provides an objective estimate of the mean opinion score (MOS) for listening quality (LQK), rating it from 5 (excellent) to 1 (bad). This score is based on audible concealment events due to frame loss in the preceding 8-second interval of the voice stream.

Note The CVTQ score can vary based on the type of codec that the Cisco Unified IP Phone uses.

Sample value: 4.5

Value is NA when TT = 1

MLQKmn

MOS Listening Quality CVTQ Min—Minimum score observed since the beginning of a call; represents the worst-sounding eight-second interval.

Sample value: 4.1

Value is NA when TT = 1

MLQKmx

MOS Listening Quality CVTQ Max—Maximum score observed since the beginning of a call; represents the best sounding eight-second interval.

Sample value: 4.5

Value is NA when TT = 1

MLQKvr

Version of the CVTQ calculation.

Sample value: .95

Value is NA when TT = 1

DRTN

Duration of the call in seconds.

Sample value: 120

Value is NA when TT = 1

NST

Number of suppressed traps from start time to end time when TT = 1. For more information, see the entry for Send traps every n minutes in Setting Up the Sensor Default Configuration.

Sample value: 9

Value is 0 when TT = 3

ST

Start time when TT = 1. Time when the first trap was sent out for the endpoint.

UTC time

Value is 0 when TT = 3

ET

End time when TT = 1. Time when the most recent trap was sent out.

UTC time

Value is 0 when TT = 3


Table C-2 lists details of the Cisco 1040 unreachable SNMP trap.

Table C-2 Cisco 1040 Unreachable SNMP Trap

TAG
Description
Value

TT

Trap type

2

01

Cisco 1040 ID

Cisco 1040 MAC address

02

Time stamp

<YYYYMMDDhhmm>


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Posted: Fri Aug 31 12:38:32 PDT 2007
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