ALCATEL-IND1-PCAM-MIB

All MIBs › ALCATEL-IND1-PCAM-MIB

Organization: Alcatel-Lucent

Last Updated: 2007-04-03

Category: Vendor: Alcatel-Lucent

Description: Alcatel OmniSwitch policy CAM MIB for monitoring hardware TCAM resource utilization and policy rule statistics.

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What Is ALCATEL-IND1-PCAM-MIB?

ALCATEL-IND1-PCAM-MIB is an Alcatel-proprietary OmniSwitch MIB covering the Coronado Layer 3 Hardware Routing Engine (HRE), which monitors hardware TCAM/hash-table resource utilization and policy/routing rule statistics on the switch's forwarding ASIC. It exposes per-slot/per-slice hardware statistics such as hash table size, hash entries in use, collision entries in use, current hash function, and collision-chain length metrics. Its monitoring purpose is squarely hardware-resource health: tracking hash/collision-table utilization reveals whether the switch's L3 forwarding hardware is approaching capacity or experiencing excessive hash collisions, which can degrade forwarding performance even though interfaces and software otherwise appear healthy. It is a vendor-specific extension without a clearly stated dependency on other standard MIBs, focused narrowly on this hardware subsystem. It is deployed on Alcatel-Lucent OmniSwitch (Coronado-based) switches where operators need visibility into L3 hardware forwarding-table utilization for capacity planning and performance troubleshooting. Engineers can download the ALCATEL-IND1-PCAM-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ALCATEL-IND1-PCAM-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

Alcatel-Lucent OmniSwitch (Coronado-based) switch

Monitoring Examples

An administrator would poll alaCoroL3HrePerModeTable entries — indexed by alaCoroL3HrePerModeSlotNumber, alaCoroL3HrePerModeSliceNumber, and alaCoroL3HrePerModeModeNumber — to read alaCoroL3HreModeHashTableSize, alaCoroL3HreModeHashEntriesInUse, alaCoroL3HreModeCollEntriesInUse, and alaCoroL3HreMaxCollChainLen/alaCoroL3HreAvgCollChainLen. A rising alaCoroL3HreModeCollEntriesInUse count together with a growing average collision chain length for a given slot/slice indicates the L3 hardware routing table is under hash-collision pressure, which can slow route lookups and would justify redistributing routes or re-tuning the hash function (alaCoroL3HreModeCurrentHashFunction).

What Can Be Monitored

hash table size/utilization
hash entries in use
collision entries in use
collision chain length
current hash function selection

Imported Objects

From ALCATEL-IND1-BASE

hardentIND1Pcam

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter64
MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using alaCoroL3HreIpPacketsReceived OID:

Select an Alcatel-Lucent Enterprise OmniSwitch switch 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 alaCoroL3HreIpPacketsReceived 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 number of IP packets received. 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
alcatelIND1PCAMMIB	1.3.6.1.4.1.6486.801.1.1.1.4.1			This module describes an authoritative enterprise-specific Simple Network Management Protocol (SNMP) Management Information Base (MIB): This MIB contains management information for Coronado Layer 3 Hardware Routing Engine (HRE) management. The right to make changes in specification and other information contained in this document without prior notice is reserved. No liability shall be assumed for any incidental, indirect, special, or consequential damages whatsoever arising from or related to this document or the information contained herein. Vendors, end-users, and other interested parties are granted non-exclusive license to use this specification in connection with management of the products for which it is intended to be used. Copyright (C) 1995-2007 Alcatel-Lucent ALL RIGHTS RESERVED WORLDWIDE
alcatelIND1PCAMMIBObjects	1.3.6.1.4.1.6486.801.1.1.1.4.1.1			Branch for Coronado Layer 3 HRE Managed Objects.
alaCoroL3HrePerModeTable	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1		not-accessible	The statistics and configurable data for a Coronado L3 HRE mode.
alaCoroL3HrePerModeTableEntry	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1		not-accessible	Each entry corresponds to a single mode for a single Coronado.
U32 alaCoroL3HrePerModeSlotNumber	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1.1	Unsigned32	read-only	The slot number in which the Coronado resides. Valid range will vary depending on hardware configuration.
U32 alaCoroL3HrePerModeSliceNumber	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1.2	Unsigned32	read-only	The slice number in which the Coronado resides. Valid range will vary depending on hardware configuration.
INT alaCoroL3HrePerModeModeNumber	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1.3	INTEGER	read-only	Identifier for L3 HRE mode. Note that mode 3 refers to data used for modes 3 through 5 since they share hash function and memory space.
U32 alaCoroL3HreModeHashTableSize	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1.4	Unsigned32	read-only	Number of hash buckets to be used for this mode. This must be 0 or a power of 2.
U32 alaCoroL3HreModeHashEntriesInUse	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1.5	Unsigned32	read-only	Number of hash buckets currently in use for this mode.
U32 alaCoroL3HreModeCollEntriesInUse	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1.6	Unsigned32	read-only	Number of collision entries in use by this mode.
COR alaCoroL3HreModeCurrentHashFunction	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1.7	CoroL3HashFunction	read-only	Current hash function in use by this mode.
U32 alaCoroL3HreMaxCollChainLen	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1.8	Unsigned32	read-only	Maximum length for the collision chains in this mode.
U32 alaCoroL3HreAvgCollChainLen	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.1.1.9	Unsigned32	read-only	Average length for the collision chains in this mode.
alaCoroL3HrePerCoronadoStatsTable	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2		not-accessible	The statistics for a Coronado L3 HRE.
alaCoroL3HrePerCoronadoStatsTableEntry	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1		not-accessible	Each entry corresponds to a single Coronado.
U32 alaCoroL3HreSlotNumber	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.1	Unsigned32	read-only	The slot number in which the Coronado resides. Valid range will vary depending on hardware configuration.
U32 alaCoroL3HreSliceNumber	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.2	Unsigned32	read-only	The slice number in which the Coronado resides. Valid range will vary depending on hardware configuration.
U32 alaCoroL3HreRouteCacheEntriesTotal	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.3	Unsigned32	read-only	Total number of configured route cache entries.
U32 alaCoroL3HreRouteCacheEntriesInUse	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.4	Unsigned32	read-only	Number of route cache entries currently in-use.
C64 alaCoroL3HreIpPacketsReceivedEx	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.5	Counter64	read-only	Number of IP packets received.
C64 alaCoroL3HreIpBytesReceived	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.6	Counter64	read-only	Number of IP bytes received.
C64 alaCoroL3HreIpPacketsForwarded	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.7	Counter64	read-only	Number of IP packets routed.
C64 alaCoroL3HreIpBytesForwarded	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.8	Counter64	read-only	Number of IP bytes routed.
C64 alaCoroL3HreIpPacketsDiscarded	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.9	Counter64	read-only	Number of IP packets discarded.
C64 alaCoroL3HreIpBytesDiscarded	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.10	Counter64	read-only	Number of IP bytes discarded.
C64 alaCoroL3HreIpPacketsFragmented	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.11	Counter64	read-only	Number of IP packets fragmented.
C64 alaCoroL3HreIpPacketsFragsGenerated	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.12	Counter64	read-only	Number of IP packet fragments generated.
C64 alaCoroL3HreIpPacketsFailedToFrag	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.13	Counter64	read-only	Number of IP packets that could not be fragmented because IP flag precluded it.
C64 alaCoroL3HreIpxPacketsReceived	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.14	Counter64	read-only	Number of IPX packets received.
C64 alaCoroL3HreIpxBytesReceived	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.15	Counter64	read-only	Number of IPX bytes received.
C64 alaCoroL3HreIpxPacketsForwarded	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.16	Counter64	read-only	Number of IPX packets routed.
C64 alaCoroL3HreIpxBytesForwarded	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.17	Counter64	read-only	Number of IPX bytes routed.
C64 alaCoroL3HreIpxPacketsDiscarded	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.18	Counter64	read-only	Number of IPX packets discarded.
C64 alaCoroL3HreIpxBytesDiscarded	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.2.1.19	Counter64	read-only	Number of IPX bytes discarded.
INT alaCoroL3HreUpdateChanges	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.3	INTEGER	read-write	Updating this object causes the change list to either be applied cleared.
alaCoroL3HreChangeTable	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.4		not-accessible	The statistics and configurable data for a Coronado L3 HRE mode.
alaCoroL3HreChangeTableEntry	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.4.1		not-accessible	Each entry corresponds to a single mode for a single Coronado.
U32 alaCoroL3HreChangeSlotNumber	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.4.1.1	Unsigned32	read-only	The slot number in which the Coronado resides. Valid range will vary depending on hardware configuration.
U32 alaCoroL3HreChangeSliceNumber	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.4.1.2	Unsigned32	read-only	The slice number in which the Coronado resides. Valid range will vary depending on hardware configuration.
INT alaCoroL3HreChangeModeNumber	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.4.1.3	INTEGER	read-only	Identifier for L3 HRE mode. Note that mode 3 refers to data used for modes 3 through 5 since they share hash function and memory space.
U32 alaCoroL3HreChangeHashTableSize	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.4.1.4	Unsigned32	read-write	Number of hash buckets to be used for this mode. This must be 0 or a power of 2.
COR alaCoroL3HreChangeHashFunction	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.4.1.5	CoroL3HashFunction	read-write	Hash function to be used for this mode.
INT alaCoroL3HreChangeClear	1.3.6.1.4.1.6486.801.1.1.1.4.1.1.4.1.6	INTEGER	read-write	Clears changes for the specified mode.
alcatelIND1PCAMMIBConformance	1.3.6.1.4.1.6486.801.1.1.1.4.1.2			Branch for Coronado Layer 3 HRE Conformance Information.
alcatelIND1PCAMMIBGroups	1.3.6.1.4.1.6486.801.1.1.1.4.1.2.1			Branch for Coronado Layer 3 HRE Units of Conformance.
alaCoroL3HrePerModeObjects	1.3.6.1.4.1.6486.801.1.1.1.4.1.2.1.1			A collection of objects providing information for each mode.
alaCoroL3HrePerCoronadoObjects	1.3.6.1.4.1.6486.801.1.1.1.4.1.2.1.2			A collection of objects providing information for each Coronado.
alaCoroL3HreChangeObjects	1.3.6.1.4.1.6486.801.1.1.1.4.1.2.1.3			A collection of objects providing information for changes to be made.
alcatelIND1PCAMMIBCompliances	1.3.6.1.4.1.6486.801.1.1.1.4.1.2.2			Branch for Coronado Layer 3 HRE Compliance Statements.
alcatelInd1PCAMMIBCompliance	1.3.6.1.4.1.6486.801.1.1.1.4.1.2.2.1			The compliance statement for the Coronado Layer 3.

RFC description

Alcatel-Lucent Coronado Layer 3 Hardware Routing Engine management information base.

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Download ALCATEL-IND1-PCAM-MIB