As stated in the official CISCO-CLASS-BASED-QOS-MIB file, Cisco Class-Based QoS MIB “provides read access to Quality of Service (QoS) configuration and statistics information for Cisco platforms that support the Modular Quality of Service Command-line Interface“.
In other words, the integration of this MIB in a SNMP-based NMS lets you to monitor all the values you can see with the show policy-map IOS command.
This MIB has not a so straightforward structure as other MIBs have, so integration with NMS can be a little diffcult.
Let’s take a deeper look at its structure; in a future post I’ll show how to use this information to monitor IOS QoS statistics in Zabbix.
We’ll use the following trivial IOS configuration for our examples:
class-map match-any NonLocal
match access-group 10
!
class-map match-all ICMP
match protocol icmp
!
policy-map CPP
description Applied to control plan - In
class NonLocal
police cir 8000
conform-action transmit
exceed-action drop
!
policy-map LAN_Out
description Applied to fa0/0 - Out
class ICMP
bandwidth 10
class class-default
fair-queue
!
interface FastEthernet0/0
ip address 192.168.0.8 255.255.255.0
service-policy output LAN_Out
!
access-list 10 deny 192.168.0.0 0.0.0.255
access-list 10 permit any
!
control-plane
service-policy input CPP
In this MIB informations are stored on a lot of tables:
- cbQosServicePolicyTable and cbQosObjectsTable define QoS policies layout;
- cbQosXXXCfgTable tables define configuration details for the objects (ClassMap, PolicyMap, Match statements…);
- cbQosXXXStatsTable tables define runtime statistics for the same objects.
As first, we have to look at cbQosServicePolicyTable: here we find bindings between policy-maps and interfaces, as in the service-policy command:
cbQosServicePolicyTable ----------------------- # snmpwalk -v 2c -c public -m ALL 192.168.0.8 .1.3.6.1.4.1.9.9.166.1.1.1 CISCO-CLASS-BASED-QOS-MIB::cbQosIfType.1043 = INTEGER: mainInterface(1) CISCO-CLASS-BASED-QOS-MIB::cbQosIfType.1099 = INTEGER: controlPlane(5) CISCO-CLASS-BASED-QOS-MIB::cbQosPolicyDirection.1043 = INTEGER: output(2) CISCO-CLASS-BASED-QOS-MIB::cbQosPolicyDirection.1099 = INTEGER: input(1) CISCO-CLASS-BASED-QOS-MIB::cbQosIfIndex.1043 = INTEGER: 1 CISCO-CLASS-BASED-QOS-MIB::cbQosIfIndex.1099 = INTEGER: 1 CISCO-CLASS-BASED-QOS-MIB::cbQosFrDLCI.1043 = INTEGER: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosFrDLCI.1099 = INTEGER: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosAtmVPI.1043 = Gauge32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosAtmVPI.1099 = Gauge32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosAtmVCI.1043 = Gauge32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosAtmVCI.1099 = Gauge32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosEntityIndex.1043 = INTEGER: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosEntityIndex.1099 = INTEGER: 0
cbQosPolicyIndex is the table’s index (1043, 1099 in the previous example); it identifies the service-policy.
cbQosIfType defines the type of interface which the service-policy is applied to: mainInterface(1), subInterface(2), frDLCI(3), atmPVC(4), controlPlane(5), vlanPort(6).
cbQosPolicyDirection tells the direction of the traffic: input(1) and output(2).
Other parameters depend on cbQosIfType value and represent specific objects identifiers (ifIndex, DLCI, VPI/VCI, … ).
From the previous example we can see there are 2 service-policies, with ID 1043 and 1099, applied for output traffic to a physical interface with ifIndex 1, and for input traffic to the control-plane.
The second important table is cbQosObjectsTable, where all objects (class-map, match, set statements…) are stored, classified (cbQosObjectsType), identified within the configuration (cbQosConfigIndex) and related to the service-policy or other objects (cbQosParentObjectsIndex). Here we have a two-fields index: cbQosPolicyIndex and cbQosObjectsIndex:
cbQosObjectsTable ----------------- # snmpwalk -v 2c -c public -m ALL 192.168.0.8 .1.3.6.1.4.1.9.9.166.1.5.1 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1043 = Gauge32: 1035 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1045 = Gauge32: 1029 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1047 = Gauge32: 1033 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1049 = Gauge32: 1037 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1051 = Gauge32: 1025 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1053 = Gauge32: 1027 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1085 = Gauge32: 1079 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1099 = Gauge32: 1063 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1101 = Gauge32: 1057 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1103 = Gauge32: 1061 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1105 = Gauge32: 1065 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1107 = Gauge32: 1025 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1109 = Gauge32: 1027 CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1043 = INTEGER: policymap(1) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1045 = INTEGER: classmap(2) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1047 = INTEGER: matchStatement(3) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1049 = INTEGER: queueing(4) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1051 = INTEGER: classmap(2) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1053 = INTEGER: matchStatement(3) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1085 = INTEGER: queueing(4) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1099.1099 = INTEGER: policymap(1) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1099.1101 = INTEGER: classmap(2) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1099.1103 = INTEGER: matchStatement(3) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1099.1105 = INTEGER: police(7) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1099.1107 = INTEGER: classmap(2) CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1099.1109 = INTEGER: matchStatement(3) CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1043.1043 = Gauge32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1043.1045 = Gauge32: 1043 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1043.1047 = Gauge32: 1045 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1043.1049 = Gauge32: 1045 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1043.1051 = Gauge32: 1043 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1043.1053 = Gauge32: 1051 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1043.1085 = Gauge32: 1051 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1099.1099 = Gauge32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1099.1101 = Gauge32: 1099 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1099.1103 = Gauge32: 1101 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1099.1105 = Gauge32: 1101 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1099.1107 = Gauge32: 1099 CISCO-CLASS-BASED-QOS-MIB::cbQosParentObjectsIndex.1099.1109 = Gauge32: 1107
cbQosConfigIndex let us to find configuration details about objects in other tables; service-policies have the same cbQosObjectsIndex as cbQosPolicyIndex. These config tables are cbQosObjectsType dependent: we have cbQosPolicyMapCfgTable, cbQosClassMapCfgTable, cbQosMatchStmtCfgTable… each object type has its own table, all referenced by cbQosConfigIndex.
Let’s see one of them…
cbQosPolicyMapCfgTable ---------------------- # snmpwalk -v 2c -c public -m ALL 192.168.0.8 .1.3.6.1.4.1.9.9.166.1.6.1 CISCO-CLASS-BASED-QOS-MIB::cbQosPolicyMapName.1035 = STRING: LAN_Out CISCO-CLASS-BASED-QOS-MIB::cbQosPolicyMapName.1063 = STRING: CPP CISCO-CLASS-BASED-QOS-MIB::cbQosPolicyMapDesc.1035 = STRING: Applied to fa0/0 - Out CISCO-CLASS-BASED-QOS-MIB::cbQosPolicyMapDesc.1063 = STRING: Applied to control plan - In
We can see here our policy-maps, indexed by the cbQosConfigIndex values previously found on cbQosObjectsTable.
With the cbQosObjectsTable data we already have all informations we need to build an OID list for our NMS.
Assume we just need to monitor class-map offered rate and drop rate, as in the show policy-map interface | inc Class-map|offered. All per class-map statistics are collected on the cbQosCMStatsTable; as all stats table, it’s indexed by cbQosPolicyIndex and cbQosObjectsIndex. Take a look at the table:
cbQosCMStatsTable ----------------- # snmpwalk -v 2c -c public -m ALL 192.168.0.8 .1.3.6.1.4.1.9.9.166.1.15.1.1 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPktOverflow.1043.1045 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPktOverflow.1043.1051 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPktOverflow.1099.1101 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPktOverflow.1099.1107 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPkt.1043.1045 = Counter32: 8 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPkt.1043.1051 = Counter32: 1131 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPkt.1099.1101 = Counter32: 281 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPkt.1099.1107 = Counter32: 7016 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPkt64.1043.1045 = Counter64: 8 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPkt64.1043.1051 = Counter64: 1131 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPkt64.1099.1101 = Counter64: 281 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyPkt64.1099.1107 = Counter64: 7016 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByteOverflow.1043.1045 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByteOverflow.1043.1051 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByteOverflow.1099.1101 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByteOverflow.1099.1107 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByte.1043.1045 = Counter32: 784 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByte.1043.1051 = Counter32: 114630 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByte.1099.1101 = Counter32: 69858 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByte.1099.1107 = Counter32: 658800 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByte64.1043.1045 = Counter64: 784 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByte64.1043.1051 = Counter64: 114630 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByte64.1099.1101 = Counter64: 69858 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyByte64.1099.1107 = Counter64: 658800 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyBitRate.1043.1045 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyBitRate.1043.1051 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyBitRate.1099.1101 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyBitRate.1099.1107 = Gauge32: 1000 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByteOverflow.1043.1045 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByteOverflow.1043.1051 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByteOverflow.1099.1101 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByteOverflow.1099.1107 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByte.1043.1045 = Counter32: 784 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByte.1043.1051 = Counter32: 114630 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByte.1099.1101 = Counter32: 69668 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByte.1099.1107 = Counter32: 658800 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByte64.1043.1045 = Counter64: 784 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByte64.1043.1051 = Counter64: 114630 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByte64.1099.1101 = Counter64: 69668 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyByte64.1099.1107 = Counter64: 658800 CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyBitRate.1043.1045 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyBitRate.1043.1051 = Gauge32: 2000 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyBitRate.1099.1101 = Gauge32: 2000 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyBitRate.1099.1107 = Gauge32: 2000 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPktOverflow.1043.1045 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPktOverflow.1043.1051 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPktOverflow.1099.1101 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPktOverflow.1099.1107 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPkt.1043.1045 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPkt.1043.1051 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPkt.1099.1101 = Counter32: 4 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPkt.1099.1107 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPkt64.1043.1045 = Counter64: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPkt64.1043.1051 = Counter64: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPkt64.1099.1101 = Counter64: 4 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropPkt64.1099.1107 = Counter64: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByteOverflow.1043.1045 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByteOverflow.1043.1051 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByteOverflow.1099.1101 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByteOverflow.1099.1107 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByte.1043.1045 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByte.1043.1051 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByte.1099.1101 = Counter32: 380 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByte.1099.1107 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByte64.1043.1045 = Counter64: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByte64.1043.1051 = Counter64: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByte64.1099.1101 = Counter64: 380 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropByte64.1099.1107 = Counter64: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropBitRate.1043.1045 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropBitRate.1043.1051 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropBitRate.1099.1101 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropBitRate.1099.1107 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPktOverflow.1043.1045 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPktOverflow.1043.1051 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPktOverflow.1099.1101 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPktOverflow.1099.1107 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPkt.1043.1045 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPkt.1043.1051 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPkt.1099.1101 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPkt.1099.1107 = Counter32: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPkt64.1043.1045 = Counter64: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPkt64.1043.1051 = Counter64: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPkt64.1099.1101 = Counter64: 0 CISCO-CLASS-BASED-QOS-MIB::cbQosCMNoBufDropPkt64.1099.1107 = Counter64: 0
We just need to select cbQosPolicyIndex and cbQosObjectsIndex values from cbQosObjectsTable where cbQosObjectsType = classmap(2) and attach them to the counter we need to monitor.
CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyBitRate.1043.1045 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyBitRate.1043.1051 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyBitRate.1099.1101 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPrePolicyBitRate.1099.1107 = Gauge32: 1000 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyBitRate.1043.1045 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyBitRate.1043.1051 = Gauge32: 2000 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyBitRate.1099.1101 = Gauge32: 2000 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMPostPolicyBitRate.1099.1107 = Gauge32: 2000 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropBitRate.1043.1045 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropBitRate.1043.1051 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropBitRate.1099.1101 = Gauge32: 0 bits per second CISCO-CLASS-BASED-QOS-MIB::cbQosCMDropBitRate.1099.1107 = Gauge32: 0 bits per second
To have more details about the ClassMap statements to which these stats are related we can look at their configuration: as first we need their cbQosConfigIndex:
# snmpget -v 2c -c public -m ALL 192.168.0.8 .1.3.6.1.4.1.9.9.166.1.5.1.1.2.1043.1045 CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1045 = Gauge32: 1029
With cbQosConfigIndex we can get class-map details; this is the cbQosCMCfgTable table:
cbQosCMCfgTable ---------------- # snmpwalk -v 2c -c public -m ALL 192.168.0.8 .1.3.6.1.4.1.9.9.166.1.7.1 CISCO-CLASS-BASED-QOS-MIB::cbQosCMName.1025 = STRING: class-default CISCO-CLASS-BASED-QOS-MIB::cbQosCMName.1029 = STRING: ICMP CISCO-CLASS-BASED-QOS-MIB::cbQosCMName.1057 = STRING: NonLocal CISCO-CLASS-BASED-QOS-MIB::cbQosCMDesc.1025 = STRING: CISCO-CLASS-BASED-QOS-MIB::cbQosCMDesc.1029 = STRING: CISCO-CLASS-BASED-QOS-MIB::cbQosCMDesc.1057 = STRING: CISCO-CLASS-BASED-QOS-MIB::cbQosCMInfo.1025 = INTEGER: matchAny(3) CISCO-CLASS-BASED-QOS-MIB::cbQosCMInfo.1029 = INTEGER: matchAll(2) CISCO-CLASS-BASED-QOS-MIB::cbQosCMInfo.1057 = INTEGER: matchAny(3)
We can easily get the class-map name:
# snmpget -v 2c -c public -m ALL 192.168.0.8 .1.3.6.1.4.1.9.9.166.1.7.1.1.1.1029
CISCO-CLASS-BASED-QOS-MIB::cbQosCMName.1029 = STRING: ICMP
Of course we can build NMS configuration including more details from both objects details and statistics.
Please note that, by default, indexes “are never reused between router reboots, even when changes are made to the QoS configuration“. This is stated in the CISCO-CLASS-BASED-QOS-MIB file. Fortunately, starting from 12.4(4)T, the cbqos keyword has been added to the snmp mib persist global command.
As said, as soon as possibile I’ll post a script to use Cisco CBQoS in Zabbix… stay tuned! 😉
Some useful links:
- Ivan Pepelnjak post on wiki.nil.com: Class-based QoS MIB indexes (about stats monitoring using EEM applet)
- CISCO-CLASS-BASED-QOS-MIB on Cisco SNMP Object Navigator
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[…] Routing Freak! « Cisco Class-Based QoS SNMP MIB and statistics monitor for NMS […]
thanks a lot Pierky, very useful, i’m going to try it!
For a Linux-dummy like me was more difficult to add the Cisco MIBS to my management station, in order to “resolve” MIB names…
http://www.net-snmp.org/docs/FAQ.html#How_do_I_add_a_MIB_to_the_tools_
solved this issue 😉
Thanks for you comment, Marco. Of course your link will be useful to other readers! 😉
Hi,
Your post is very useful for me,thank u very much.And i’ve a question to u. Can a class have another class as its child ? From my observation class can have policy,matches and actions as its child. Is my observation right ? Plz clarify me soon….
Hi Akila, thank you for you comment, you are right, you can have nested policies, even if I didn’t implement this feature in my Zabbix script!
Hi Pierky,
Still i’m not clear, let me explain my question clearly to you. Can a class have another class as its direct child ?
As far as I know, a class-map cannot have another class-map as its child. Admittedly, I can’t figure out an application scenario. What you can do is a class-map matching another class-map:
class-map match-any IPTraffic
match protocol ip
exit
class-map match-all IPTrafficToWEBServer
match class-map IPTraffic
match access-group name MyWEBServer
exit
Maybe also we are speaking about the same thing! 😉
You are right Pierky, but i’ve configrure a sample nested policy in the router,while viewing the policy details with the help of MIB browsers, it shows a class has another class as its child… Thats why this confusion..
Any way thanks for your quick reply ..
Akila, could you post the nested policy config? I will try to investigate as soon as possible. Thank you
Pierky, now the policy configuration is viewing properly. Probably its my mistake in mapping the index. Sorry for disturbed you…
Disturb? 🙂 Bye
nice post … i like it very much
I need to use CISCO-CLASS-BASED-QOS-MIB to monitor my QoS. How can I do to check QoS traffic of my class’s-map?
My output is diferent your output. My output is diferent your output. How can I interpret my output?
your: # snmpwalk -v 2c -c public -m ALL 192.168.0.8 .1.3.6.1.4.1.9.9.166.1.5.1
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1043 = Gauge32: 1035
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1045 = Gauge32: 1029
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1047 = Gauge32: 1033
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1049 = Gauge32: 1037
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1051 = Gauge32: 1025
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1053 = Gauge32: 1027
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1043.1085 = Gauge32: 1079
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1099 = Gauge32: 1063
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1101 = Gauge32: 1057
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1103 = Gauge32: 1061
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1105 = Gauge32: 1065
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1107 = Gauge32: 1025
CISCO-CLASS-BASED-QOS-MIB::cbQosConfigIndex.1099.1109 = Gauge32: 1027
CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1043 = INTEGER: policymap(1)
CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1045 = INTEGER: classmap(2)
CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1047 = INTEGER: matchStatement(3)
CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1049 = INTEGER: queueing(4)
CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1051 = INTEGER: classmap(2)
CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1053 = INTEGER: matchStatement(3)
CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1043.1085 = INTEGER: queueing(4)
CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1099.1099 = INTEGER: policymap(1)
CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType.1099.1101 = INTEGER: classmap(2)
……output ommited
my: # snmpwalk -v 2c -c XXXXXX -m ALL xxx.xxx.xxx.xxx .1.3.6.1.4.1.9.9.166.1.5.1
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2145 = Gauge32: 1777
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2147 = Gauge32: 1695
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2151 = Gauge32: 1779
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2153 = Gauge32: 1683
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2157 = Gauge32: 1781
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2159 = Gauge32: 1671
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2163 = Gauge32: 1783
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2165 = Gauge32: 1737
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2169 = Gauge32: 1785
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2171 = Gauge32: 1713
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2175 = Gauge32: 1787
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2177 = Gauge32: 1725
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2181 = Gauge32: 1789
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2183 = Gauge32: 1743
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2187 = Gauge32: 1791
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2189 = Gauge32: 1677
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2193 = Gauge32: 1793
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2195 = Gauge32: 1689
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2199 = Gauge32: 1795
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2213 = Gauge32: 1053
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2219 = Gauge32: 1173
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2223 = Gauge32: 1803
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2231 = Gauge32: 1653
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2235 = Gauge32: 1807
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2243 = Gauge32: 1731
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2247 = Gauge32: 1811
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2249 = Gauge32: 1719
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2253 = Gauge32: 1813
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2261 = Gauge32: 1749
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2265 = Gauge32: 1817
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2267 = Gauge32: 1485
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2271 = Gauge32: 1819
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2273 = Gauge32: 1407
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2277 = Gauge32: 1821
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2279 = Gauge32: 1539
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2283 = Gauge32: 1823
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2285 = Gauge32: 1587
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2289 = Gauge32: 1825
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2291 = Gauge32: 1563
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2295 = Gauge32: 1827
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2297 = Gauge32: 1623
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2301 = Gauge32: 1829
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2303 = Gauge32: 1605
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2307 = Gauge32: 1831
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2309 = Gauge32: 1659
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2313 = Gauge32: 1833
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2315 = Gauge32: 1611
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2319 = Gauge32: 1835
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2321 = Gauge32: 1629
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2325 = Gauge32: 1837
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2327 = Gauge32: 1569
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2331 = Gauge32: 1839
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2333 = Gauge32: 1593
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2337 = Gauge32: 1841
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2339 = Gauge32: 1545
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2343 = Gauge32: 1843
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2345 = Gauge32: 1551
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2349 = Gauge32: 1845
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2351 = Gauge32: 1515
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2355 = Gauge32: 1847
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2357 = Gauge32: 1521
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2361 = Gauge32: 1849
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2363 = Gauge32: 1509
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2367 = Gauge32: 1851
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2369 = Gauge32: 1473
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2373 = Gauge32: 1853
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2375 = Gauge32: 1491
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2379 = Gauge32: 1855
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2381 = Gauge32: 1461
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2385 = Gauge32: 1857
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2387 = Gauge32: 1467
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2391 = Gauge32: 1859
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2393 = Gauge32: 1449
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2397 = Gauge32: 1861
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2399 = Gauge32: 1455
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2403 = Gauge32: 1863
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2405 = Gauge32: 1425
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2409 = Gauge32: 1865
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2411 = Gauge32: 1767
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2415 = Gauge32: 1867
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2417 = Gauge32: 1761
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2421 = Gauge32: 1869
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2423 = Gauge32: 1635
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2427 = Gauge32: 1871
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2429 = Gauge32: 1527
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2433 = Gauge32: 1873
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2435 = Gauge32: 1575
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2439 = Gauge32: 1875
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2441 = Gauge32: 1647
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2445 = Gauge32: 1877
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2447 = Gauge32: 1641
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2451 = Gauge32: 1879
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2453 = Gauge32: 1617
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2457 = Gauge32: 1881
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2459 = Gauge32: 1581
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2463 = Gauge32: 1883
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2465 = Gauge32: 1755
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2469 = Gauge32: 1885
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2471 = Gauge32: 1665
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2475 = Gauge32: 1887
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2477 = Gauge32: 1431
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2481 = Gauge32: 1889
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2483 = Gauge32: 1419
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2487 = Gauge32: 1891
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2489 = Gauge32: 1479
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2493 = Gauge32: 1893
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2495 = Gauge32: 1497
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2499 = Gauge32: 1895
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2501 = Gauge32: 1025
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.2503 = Gauge32: 1027
SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.2145.3489 = Gauge32: 1717
…output ommited
I need to use CISCO-CLASS-BASED-QOS-MIB to monitor my QoS. How can I do to check QoS traffic of my class’s-map?
My output is diferent your output. My output is diferent your output. How can I interpret my output?
Hi, I think in my post I wrote how to interpret your output.
The layout of your output is different because you don’t have the CISCO-CLASS-BASED-QOS-MIB definition file on the computer where you ran the snmpwalk command; you can find it here http://bit.ly/fnoV22 and you have to put it in the SNMP library, with its dependencies too. Anyway, this only impacts the way the output is shown: CISCO-CLASS-BASED-QOS-MIB::cbQosObjectsType is equivalent to SNMPv2-SMI::enterprises.9.9.166.1.5.1.1.2.
Indexes (1043.1043, 1043.1045 and so on in my output, 2145.2145, 2145.2147 in your) depend on the specific configuration and internal objects numbering.
can you help to install this MIB? which directory should I install?
I use CENTOS SERVER (red hat 5.0)
thanks
Here it is: http://tinyurl.com/4v3p3zc
Hi all,
I have just apply policer on my 7609 router, i would like to monitor traffic on each class of service. And this here is show policy-map output on my router:
Service-policy output: ABC
class-map: Hosting-Colocation-to-Network (match-any)
Match: access-group name Hosting-Colocation-to-VN2
police :
10000000000 bps 31250000 limit 31250000 extended limit
Earl in slot 4 :
13801619258245 bytes
30 second offered rate 144487304 bps
aggregate-forwarded 13801619258245 bytes action: transmit
exceeded 0 bytes action: transmit
aggregate-forward 145773304 bps exceed 0 bps
Earl in slot 5 :
72837 bytes
30 second offered rate 0 bps
aggregate-forwarded 72837 bytes action: transmit
exceeded 0 bytes action: transmit
aggregate-forward 0 bps exceed 0 bps
class-map: class-default (match-any)
Match: any
police :
10000000000 bps 31250000 limit 31250000 extended limit
Earl in slot 4 :
74520070218188 bytes
30 second offered rate 879718984 bps
aggregate-forwarded 74520070218188 bytes action: transmit
exceeded 0 bytes action: transmit
aggregate-forward 888842536 bps exceed 0 bps
Earl in slot 5 :
5622549680569 bytes
30 second offered rate 93300336 bps
aggregate-forwarded 5622549680569 bytes action: transmit
exceeded 0 bytes action: transmit
aggregate-forward 99314912 bps exceed 0 bps
Pls advise how to get OID or how to grahp them.
Best regards,
Vo Minh Thuan
Hi.
Do you if it is possible to get the access-list via SNMP!?
Thanks
Hi,
I’m developing a QoS parser for another NMS, and I’m having a strange issue with Cisco ASR platforms, where my top-level service policies don’t have the same value for cbQosPolicyIndex and cbQosObjectsIndex.
The cbQosPolicyIndex is nicely matching its sibling in cbQosServicePolicyTable, but the cbQosObjectsIndex is coming out of nowhere, so I can’t use twice the same value to find the matching cbQosConfigIndex within cbQosObjectsTable.
Have you seen this issue already (especially with ASR), and how do you solve it ?
TIA,
Charles
Hi, unfortunately I have no experience about this on ASR, sorry man!
Regards
How can I obtain the QoS OID from my Cisco Router?
You can try with the following Cisco Tools:
– http://tools.cisco.com/Support/SNMP/do/BrowseOID.do
– http://tools.cisco.com/ITDIT/MIBS/servlet/index
Hi Pierky
Thanks thats great document . Had a query :
if i only apply Police command under class map on interface . Will this class map drop stats(cbQosClassMapStats ) show me dropped packets dropped by Police command too or its just for Drop in queues by bandwidth command . Why i am asking that is because dropped packet amount when policy command applied doesnt match cbQosClassMapStats in my case .
cbQosClassMapStats (1.3.6.1.4.1.9.9.166.1.15)
+– -R– Counter cbQosCMDropPkt(13)
+– -R– Counter64 cbQosCMDropPkt64(14)