MIB to check packet transmitted by a policy ASR9K 5.3.3/5.3.4

[mcagiola]

Hi all,

I need to know if is possible to check using snmp the packet transmitted and dropped by a policy on a specific interface:

RP/0/RSP0/CPU0:9k10-RGA-512#sh policy-map interface tenGigE 0/1/0/0 output
Fri Jul  7 16:01:29.771 CET

TenGigE0/1/0/0 output: 10GE-egress-qos-Core

Class IP_EXP_5
  Classification statistics          (packets/bytes)     (rate - kbps)
    Matched             :             9224056/14039013232          40477
    Transmitted         :             9232099/14051254678          40493
    Total Dropped       :                   0/0                    0
  Policing statistics                (packets/bytes)     (rate - kbps)
    Policed(conform)    :             9224056/14039013232          40477
    Policed(exceed)     :                   0/0                    0
    Policed(violate)    :                   0/0                    0
    Policed and dropped :                   0/0                 
  Queueing statistics
    Queue ID                             : 160
    High watermark                       : N/A
    Inst-queue-len  (packets)            : 0
    Avg-queue-len                        : N/A
    Taildropped(packets/bytes)           : 0/0
    Queue(conform)      :             9232099/14051254678          40493
    Queue(exceed)       :                   0/0                    0
    RED random drops(packets/bytes)      : 0/0

Class class-default
  Classification statistics          (packets/bytes)     (rate - kbps)
    Matched             :            21602313/32878294530          80955
    Transmitted         :            21618398/32902775580          80985
    Total Dropped       :                   0/0                    0
  Queueing statistics
    Queue ID                             : 163
    High watermark                       : N/A
    Inst-queue-len  (packets)            : 0
    Avg-queue-len                        : N/A
    Taildropped(packets/bytes)           : 0/0
    Queue(conform)      :            21618398/32902775580          80985
    Queue(exceed)       :                   0/0                    0
    RED random drops(packets/bytes)      : 0/0

    WRED profile for WRED Curve 1
    RED Transmitted (packets/bytes)            : N/A
    RED random drops(packets/bytes)            : 0/0
    RED maxthreshold drops(packets/bytes)      : N/A
    RED ecn marked & transmitted(packets/bytes): N/A
    WRED profile for WRED Curve 2
    RED Transmitted (packets/bytes)            : N/A
    RED random drops(packets/bytes)            : 0/0
    RED maxthreshold drops(packets/bytes)      : N/A
    RED ecn marked & transmitted(packets/bytes): N/A

The device is a cisco ASR9K with SW version 5.3.3 or 5.3.4.

Thank in advance.

Marco

[Aleksandar Vidakovic]

Marco,

supported MIBs and OIDs are available at:

ftp://ftp.cisco.com/pub/mibs/supportlists/asr9000/asr9000-supportlist.html

http://www.cisco.com/en/US/docs/routers/asr9000/mib/guide/asr9kmib3.html

/Aleksandar

[mcagiola]

Hi Aleks,

I constructed this routine to check the packet count over snmp:

RP/0/RSP0/CPU0: rgaxxx#sh run int te 0/2/0/1

Mon Jul 17 16:56:34.592 CET

interface TenGigE0/2/0/1

cdp

mtu 4484

service-policy output 10GE-egress-qos-Core

[SNIP]

snmpwalk -v 2c -c pubblic rgaxxx 1.3.6.1.2.1.2.2 | grep TenGigE0/2/0/1

IF-MIB::ifDescr.34 = STRING: TenGigE0/2/0/1

snmpwalk -v 2c -c pubblic rgaxxx 1.3.6.1.4.1.9.9.166.1.1.1.1 | grep 34

SNMPv2-SMI::enterprises.9.9.166.1.1.1.1.4.694692722 = INTEGER: 34

snmpwalk -v 2c -c pubblic rgaxxx 1.3.6.1.4.1.9.9.166.1.7.1.1.1

snmpwalk -v 2c -c pubblic rgaxxx 1.3.6.1.4.1.9.9.166.1.7.1.1.1

SNMPv2-SMI::enterprises.9.9.166.1.7.1.1.1.255586082 = STRING: "IP_EXP_5"

snmpwalk -v 2c -c pubblic rgaxxx 1.3.6.1.4.1.9.9.166.1.5.1.1 | grep 255586082

SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.694692722.755493609 = Gauge32: 255586082

snmpwalk -v 2c -c pubblic rgaxxx 1.3.6.1.4.1.9.9.166.1.15.1.1.10.694692722.755493609

SNMPv2-SMI::enterprises.9.9.166.1.15.1.1.10.694692722.755493609 = Counter64: 397719329536

Now the problem is that,

if I clear the policy-map counters on the device target:

RP/0/RSP0/CPU0:rgaxxxx#clear qos counters interface tenGigE 0/2/0/1 out
Tue Jul 18 14:22:44.190 CET
RP/0/RSP0/CPU0:rgaxxxx#sh policy-map interface tenGigE 0/2/0/1        
Tue Jul 18 14:22:46.543 CET

Class IP_EXP_5
  Classification statistics          (packets/bytes)     (rate - kbps)
    Matched             :               39772/9665370              16417
    Transmitted         :                   0/0                    17017
    Total Dropped       :                   0/0                    0
  Policing statistics                (packets/bytes)     (rate - kbps)
    Policed(conform)    :               39772/9665370              16417
    Policed(exceed)     :                   0/0                    0
    Policed(violate)    :                   0/0                    0
    Policed and dropped :                   0/0                 
  Queueing statistics
    Queue ID                             : 136
    High watermark                       : N/A
    Inst-queue-len  (packets)            : 0
    Avg-queue-len                        : N/A
    Taildropped(packets/bytes)           : 0/0
    Queue(conform)      :                   0/0                    17017
    Queue(exceed)       :                   0/0                    0
    RED random drops(packets/bytes)      : 0/0

But I see other numbers using SNMP:

snmpwalk -v 2c -c public rgaxxxx 1.3.6.1.4.1.9.9.166.1.15.1.1.10.1091506606.1675867576
SNMPv2-SMI::enterprises.9.9.166.1.15.1.1.10.1091506606.1675867576 = Counter64: 4254730363780

How can I solve this issue? where I'm doing a mistake?

[Aleksandar Vidakovic]

hi Marco,

you're not doing anything wrong, this is how SNMP counters are supposed to work. The CLI and SNMP counters are kept separately. Some customers don't want the SNMP counters to be cleared when CLI counters are cleared. If you want to clear the SNMP counters, you have to do it explicitly from CLI using the "clear snmp counters" command.

/Aleksandar

[mcagiola]

Hi Aleks, I did a little test and.... the command clear snmp counters doesn't work:

RP/0/RSP0/CPU0:9k10-RGA-512#sh policy-map interface tenGigE 0/1/0/0
Wed Jul 19 08:24:50.477 CETTenGigE0/1/0/0 output: 10GE-egress-qos-Core

Class IP_EXP_3_6_7
  Classification statistics          (packets/bytes)     (rate - kbps)
    Matched             :                6492/597264               0
    Transmitted         :                6492/597264               0
   

root@Ubuntu164-8:~# snmpwalk -v 2c -c pippo 172.17.51.2 1.3.6.1.4.1.9.9.166.1.15.1.1.10.1834921824.1655590267
iso.3.6.1.4.1.9.9.166.1.15.1.1.10.1834921824.1655590267 = Counter64: 598276

RP/0/RSP0/CPU0:9k10-RGA-512#clear snmp counters
Wed Jul 19 08:26:40.109 CET

root@Ubuntu164-8:~# snmpwalk -v 2c -c pippo 172.17.51.2 1.3.6.1.4.1.9.9.166.1.15.1.1.10.1834921824.1655590267
iso.3.6.1.4.1.9.9.166.1.15.1.1.10.1834921824.1655590267 = Counter64: 601220

It seems that the counter snmp can be cleared only rebooting the device.

[ปลาวาฬทราย RMUTT CPE IX]

Am I correct? Why I get the 0?

Thank you very much

[mivens]

Take a look at these objects:

CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByte64

CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyBitRate

CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPkt64

CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByte64

CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropBitRate

CISCO-CLASS-BASED-QOS-MIB::cbQosREDRandomDropByte64

CISCO-CLASS-BASED-QOS-MIB::cbQosREDRandomDropPkt64