BROCADE-QOS-MIB

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Organization: Brocade Communications Systems, Inc.

Last Updated: 2012-07-18

Category: Quality of Service, Vendor: Foundry/Brocade

Description: Manages Quality of Service queue configuration, scheduling, and traffic statistics on Brocade switches.

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What Is BROCADE-QOS-MIB?

BROCADE-QOS-MIB manages Quality of Service queue configuration and per-queue traffic statistics on Brocade NetIron XMR/MLX carrier-class routers, part of Brocade Communications Systems' service-provider routing product line. It exposes hierarchical QoS ("HQoS") statistics tables that break down enqueued and dequeued packet/byte counters per interface, per priority level, and per endpoint, such as a VLAN tag or inner tag identifying a specific subscriber or service instance. This is primarily a performance-monitoring MIB, used to track queue-level throughput and detect congestion or packet loss within specific priority queues or service endpoints — an early indicator of QoS misconfiguration or oversubscription — rather than exposing physical hardware sensors. It relies on the standard IF-MIB ifIndex convention to associate QoS statistics with physical/logical interfaces. It's typically deployed on Brocade NetIron XMR/MLX platforms in service-provider and large-enterprise core/edge networks requiring hierarchical QoS enforcement. Engineers can download the BROCADE-QOS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in BROCADE-QOS-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Brocade NetIron XMR router
Brocade NetIron MLX router

Monitoring Examples

An administrator would poll brcdHqosStatsTable, indexed by brcdHqosIfIndex and brcdHqosStatsPriority, comparing brcdHqosStatsEnquePkts against brcdHqosStatsDequePkts to detect a growing backlog in a specific priority queue that signals congestion or a downstream bottleneck. brcdHqosEndpointType and brcdHqosEndpointTag/brcdHqosEndpointInnerTag identify which VLAN or service endpoint a given statistics row belongs to, letting an operator isolate a QoS problem to a specific subscriber. brcdHqosStatsEnqueBytes and brcdHqosStatsDequeBytes provide byte-level throughput per queue for capacity planning.

What Can Be Monitored

per-queue enqueued/dequeued packet counts
per-queue enqueued/dequeued byte counts
QoS priority level per interface
per-endpoint (VLAN/service) QoS statistics

Imported Objects

From FOUNDRY-SN-ROOT-MIB

brcdQos

OBJECT-IDENTITY

From FOUNDRY-SN-SWITCH-GROUP-MIB

PortPriorityTC

From IF-MIB

InterfaceIndex

From SNMPv2-SMI

Counter32
Counter64
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using brcdHqosStatsEnquePkts OID:

Select a Brocade NetIron XMR/MLX router as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type brcdHqosStatsEnquePkts into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. It reports a count of all packets entering ingress queues on this queue. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter64-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
brcdQosMIB	1.3.6.1.4.1.1991.1.1.14.1			The MIB module contains the managed object definition for Brocade Quality of Service. Supported Platforms: - supported on NetIron XMR/MLX latforms. Copyright 1996-2012 Brocade Communications Systems, Inc. All rights reserved. This Brocade Communications Systems SNMP Management Information Base Specification embodies Brocade Communications Systems confidential and proprietary intellectual property. Brocade Communications Systems retains all title and ownership in the Specification, including any revisions. This Specification is supplied AS IS, and Brocade Communications Systems makes no warranty, either express or implied, as to the use, operation, condition, or performance of the specification, and any unintended consequence it may on the user environment.
brcdHqosObjects	1.3.6.1.4.1.1991.1.1.14.1.1
brcdHqosStatsTable	1.3.6.1.4.1.1991.1.1.14.1.1.1		not-accessible	A list of brcHqosStats entries. This table contains information of various HQoS counters. The HQoS is supported on NI-MLX-10Gx8-M/D LP modules.
brcdHqosStatsEntry	1.3.6.1.4.1.1991.1.1.14.1.1.1.1		not-accessible	An entry containing Hqos statistics counter information applicable for 10Gx8 interface if the module is physically present.
NUM brcdHqosIfIndex	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.1	InterfaceIndex	not-accessible	The index of the interface index where the HQoS is configured. The LP module must be physically present and operationally up.
INT brcdHqosEndpointType	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.2	INTEGER	not-accessible	This object specifies the End point type for HQoS scheduler.
U32 brcdHqosEndpointTag	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.3	Unsigned32	not-accessible	This object specifies the HQoS end point tag. If the brcdHqosEndpointType is other(1), then this object has zero value. If the brcdHqosEndpointType is singleTaggedVlan(2), dougleTaggedVlan(3) or bVlanIsid(4), then this object has VLAN id. The valid VLAN ids are 1 to 4094.
U32 brcdHqosEndpointInnerTag	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.4	Unsigned32	not-accessible	This object specifies the HQoS end point inner tag. If the brcdHqosEndpointType is other(1) or singleTaggedVlan(2) then this object has zero value. If the brcdHqosEndpointType is dougleTaggedVlan(3) then this object has VLAN id. The valid VLAN ids are 1 to 4094 If the index brcdHqosEndpointType is bVlanIsid(4), then this object has ISID value. The valid ISID are 256 to 16777214.
POR brcdHqosStatsPriority	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.5	PortPriorityTC	not-accessible	The priority of the packets that will be stored in this queue. This is 1-based index. The HQoS queue with brcdHqosEndpointType as other(1) have 8 priorities. All other HQoS queues have 4 priorities, two consecutive priorities are stored in one queue. In this case, the valid values for this index are 1, 3, 5 and 7. The queue with priority 1 has the packets with priority 1 and 2. Same applies for priority 3, 5 and 7
STR brcdHqosStatsDescription	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.6	DisplayString	read-only	This object gives the HQoS scheduler node name in full path format with each node separated by dot.
C64 brcdHqosStatsEnquePktsEx	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.7	Counter64	read-only	A count of all packets entering ingress queues on this queue.
C64 brcdHqosStatsEnqueBytes	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.8	Counter64	read-only	A count of all bytes entering ingress queues on this queue.
C64 brcdHqosStatsDequePkts	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.9	Counter64	read-only	A count of all packets dequeued from ingress queues and forwarded on this queue.
C64 brcdHqosStatsDequeBytes	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.10	Counter64	read-only	A count of all bytes dequeued from ingress queues and forwarded on this queue.
C64 brcdHqosStatsTotalDiscardPkts	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.11	Counter64	read-only	A count of all packets failing to enter ingress queues on this queue. This may be due to: * The queue reaching its maximum depth, WRED, or other reasons. * The network processor deciding to drop packets for reasons including: an unknown Layer-3 route, RPF, or segment filtering.
C64 brcdHqosStatsTotalDiscardBytes	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.12	Counter64	read-only	A count of all bytes failing to enter ingress queues on this queue. This may be due to: * The queue reaching its maximum depth, WRED, or other reasons. * The network processor deciding to drop packets for reasons including: an unknown Layer-3 route, RPF, or segment filtering
C64 brcdHqosStatsOldestDiscardPkts	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.13	Counter64	read-only	A count of all packets entering ingress queues on this queue, but deleted afterwards due to buffer full.
C64 brcdHqosStatsOldestDiscardBytes	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.14	Counter64	read-only	A count of all bytes entering ingress queues on this queue, but deleted afterwards due to buffer full
C64 brcdHqosStatsWREDDroppedPkts	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.15	Counter64	read-only	A count of all bytes entering ingress queues on this queue, but deleted afterwards due to buffer full
C64 brcdHqosStatsWREDDroppedBytes	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.16	Counter64	read-only	A count of all bytes entering ingress queues on this queue, but deleted afterwards due to buffer full
C64 brcdHqosStatsCurrentQDepth	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.17	Counter64	read-only	The current queue depth.
C64 brcdHqosStatsMaxQDepthSinceLastRead	1.3.6.1.4.1.1991.1.1.14.1.1.1.1.18	Counter64	read-only	The maximum queue depth since last access to read.

RFC description

Brocade vendor-private MIB for Quality of Service (QoS) management on NetIron platforms including hierarchical QoS statistics and queue configuration.

Start monitoring Brocade NetIron XMR/MLX routers with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download BROCADE-QOS-MIB