RADLAN-RLPFC-MIB

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Organization: Radlan Computer Communications Ltd.

Last Updated: 2010-04-18

Category: QoS and Traffic Management, Vendor: RADLAN/Cisco SB

Description: Configures Priority Flow Control (IEEE 802.1Qbb) for lossless Ethernet in data center deployments.

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What Is RADLAN-RLPFC-MIB?

RADLAN-RLPFC-MIB is a Marvell/RADLAN private enterprise MIB that configures IEEE 802.1Qbb Priority-based Flow Control (PFC) on RADLAN-based data-center switches, a mechanism for lossless Ethernet used by protocols like FCoE and RDMA/RoCE. It exposes a global PFC enable flag, a per-port table with admin/operational PFC enable state, and a per-priority table recording which of the eight 802.1p priorities have PFC enabled along with their operational status and reason. This MIB monitors the operational health of the flow-control mechanism itself: an admin/operational mismatch or a priority's status/reason field reveals PFC failed to negotiate on a link (e.g., peer lacking DCBX support) rather than hardware temperature or CPU load. It builds on the IEEE 802.1Qbb PFC standard and complements DCB capability exchange, though implemented as a RADLAN private MIB. It is typically deployed on RADLAN-based switches in converged data-center fabrics carrying storage or RDMA traffic requiring lossless delivery. Engineers can download the RADLAN-RLPFC-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RADLAN-RLPFC-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

Marvell/RADLAN-based data-center Ethernet switch
OEM DCB-capable switches licensing the RADLAN software stack

Monitoring Examples

An administrator verifying lossless Ethernet for storage traffic would check rlPfcGlobalEnable first, then rlPfcPortTable/rlPfcPortEntry for rlPfcPortEnableAdmin versus rlPfcPortEnableOper on a port to see if PFC actually came up despite being admin-enabled. rlPfcPriorityTable/rlPfcPriorityEntry, keyed by rlPfcPriority, shows rlPfcPriorityEnableOperStatus and rlPfcPriorityEnableOperStatusReason, explaining why a storage priority failed to negotiate PFC with an attached HBA or switch. A mismatch between admin- and operationally-enabled state typically points to a DCBX negotiation failure with the peer.

What Can Be Monitored

global PFC enable state
per-port PFC admin vs operational state
per-priority PFC enablement
per-priority PFC operational status and failure reason

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From RADLAN-MIB

rnd	OBJECT-IDENTITY

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using rlPfcPriorityEnableOperStatusReason OID:

Select a Marvell/RADLAN-based data-center Ethernet switch, OEM DCB-capable switch (802.1Qbb Priority-based Flow Control) 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 rlPfcPriorityEnableOperStatusReason 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 the reason for priority oper status 'FALSE'. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value is anything other than 'ok', since that indicates the condition this object reports has changed to one worth investigating. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
rlPfcMib	1.3.6.1.4.1.89.148			PFC Application MIBs initial version.
T/F rlPfcGlobalEnable	1.3.6.1.4.1.89.148.1	TruthValue	read-write	PFC Application Global Admin Enable.
rlPfcPortTable	1.3.6.1.4.1.89.148.2		not-accessible	PFC Application Port Table
rlPfcPortEntry	1.3.6.1.4.1.89.148.2.1		not-accessible	PFC Application Port Table Entry. Key is ifIndex.
T/F rlPfcPortEnableAdmin	1.3.6.1.4.1.89.148.2.1.1	TruthValue	read-write	PFC Port Admin Status
T/F rlPfcPortEnableOper	1.3.6.1.4.1.89.148.2.1.2	TruthValue	read-only	PFC Port OPER Status
rlPfcPriorityTable	1.3.6.1.4.1.89.148.3		not-accessible	PFC Application Priority Table
rlPfcPriorityEntry	1.3.6.1.4.1.89.148.3.1		not-accessible	PFC Application Priority Entry. Key is the user priority.
RLP rlPfcPriority	1.3.6.1.4.1.89.148.3.1.1	RlPfcPriority	not-accessible	PFC Priority - KEY
T/F rlPfcPriorityEnable	1.3.6.1.4.1.89.148.3.1.2	TruthValue	read-write	PFC Priority Admin Status
T/F rlPfcPriorityEnableOperStatus	1.3.6.1.4.1.89.148.3.1.3	TruthValue	read-only	Operational status of this priority.
INT rlPfcPriorityEnableOperStatusReasonEx	1.3.6.1.4.1.89.148.3.1.4	INTEGER	read-only	Reason for priority oper status 'FALSE'.

RFC description

Radlan Networks private MIB for priority flow control and QoS parameter management on enterprise switches.

Start monitoring Marvell/RADLAN-based data-center Ethernet switch, OEM DCB-capable switches (802.1Qbb Priority-based Flow Control) 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 RADLAN-RLPFC-MIB