FOUNDRY-SN-IP-VRRP-MIB

All MIBs › FOUNDRY-SN-IP-VRRP-MIB

Organization: Brocade Communications Systems, Inc.

Last Updated: 2010-06-02

Category: Protocol: VRRP, Vendor: Foundry/Brocade

Description: Brocade Foundry IP VRRP MIB providing Virtual Router Redundancy Protocol configuration and state management for FastIron router redundancy.

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What Is FOUNDRY-SN-IP-VRRP-MIB?

FOUNDRY-SN-IP-VRRP-MIB is a Brocade Communications (originally Foundry Networks) vendor-specific MIB under the FOUNDRY-SN-ROOT-MIB router subtree that configures and monitors both standard VRRP and Foundry's VRRP-Extended (VRRPE) protocol for FastIron/NetIron router redundancy. Its current, ifIndex-based tables - snVrrpIf2Table for interface authentication settings and error counters, and snVrrpVirRtr2Table for virtual-router configuration - track ownership (owner/backup), configured/track/current priority, hello and dead intervals, preempt mode, and snVrrpVirRtr2State (init/master/backup), along with a long list of received-packet mismatch and drop counters (RxArpPktDropCnts, RxIpMismatchCnts, RxHelloIntMismatchCnts) and transition counters (TransToMasterStateCnts, TransToBackupStateCnts); the older port-indexed snVrrpIfTable/snVrrpVirRtrTable are retained but marked deprecated in favor of the ifIndex-based versions. Global scalars snVrrpGroupOperMode and snVrrpGroupOperModeVrrpextended enable/disable VRRP and VRRPE device-wide, and snVrrpIfStateChangeTrap controls whether interface state-change traps are generated. It depends on the underlying IF-MIB ifIndex space and is deployed on Brocade/Foundry routers providing first-hop gateway redundancy, and administrators rely on FOUNDRY-SN-IP-VRRP-MIB SNMP monitoring of master/backup transitions and VRRP protocol-error counters.

IPNetwork Monitor allows you to monitor SNMP objects defined in FOUNDRY-SN-IP-VRRP-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 (Foundry) FastIron/NetIron routers

Monitoring Examples

An operator polls snVrrpVirRtr2State for a virtual router entry in snVrrpVirRtr2Table, and an unexpected transition from master(1) to backup(2) - reflected in a rising snVrrpVirRtr2TransToBackupStateCnts - would indicate the router lost mastership, potentially due to a priority or hello-interval mismatch with a peer.

What Can Be Monitored

VRRP/VRRPE global enable state
virtual router priority and state (init/master/backup)
hello/dead interval and preempt configuration
authentication and packet-mismatch error counters
master/backup transition counters

Imported Objects

From FOUNDRY-SN-ROOT-MIB

router

OBJECT-IDENTITY

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using snVrrpIf2RxHeaderErrCnts OID:

Select a Brocade/Foundry FastIron/NetIron router (VRRP/VRRPE redundancy) 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 snVrrpIf2RxHeaderErrCnts 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. The received Header error counts in this interface. 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 Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
snVrrp	1.3.6.1.4.1.1991.1.2.12			Copyright 1996-2010 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.
INT snVrrpClearVrrpStat	1.3.6.1.4.1.1991.1.2.12.1.5	INTEGER	read-write	Clear VRRP statistics command.
snVrrpGlobal	1.3.6.1.4.1.1991.1.2.12.1
INT snVrrpGroupOperMode	1.3.6.1.4.1.1991.1.2.12.1.1	INTEGER	read-write	The VRRP is configured on this system either enabled or disabled and the default is disabled mode. disabled(0)..........disable VRRP enabled(1)...........activate VRRP
INT snVrrpGroupOperModeVrrpextended	1.3.6.1.4.1.1991.1.2.12.1.6	INTEGER	read-write	The VRRP_extended is configured on this system either enabled or disabled and the default is disabled mode. disabled(0)..........disable VRRP extended enabled(1)...........activate VRRP extended
OCT snVrrpIf2AuthPassword	1.3.6.1.4.1.1991.1.2.12.4.1.1.2	OCTET STRING	read-write	The simple text password is allowed if only if the snVrrpIf2AuthType type is simpleTextPasswd(1).
INT snVrrpIf2AuthType	1.3.6.1.4.1.1991.1.2.12.4.1.1.1	INTEGER	read-write	The authentication type of this interface.
snVrrpIf2Entry	1.3.6.1.4.1.1991.1.2.12.4.1.1		not-accessible	The VRRP and VRRPE Interface Entry describes one interface from the viewpoint of VRRP and VRRPE.
C32 snVrrpIf2RxAuthPwdMismatchErrCnts	1.3.6.1.4.1.1991.1.2.12.4.1.1.5	Counter32	read-only	The received authentication password mismatched error counts in this interface.
C32 snVrrpIf2RxAuthTypeErrCnts	1.3.6.1.4.1.1991.1.2.12.4.1.1.4	Counter32	read-only	The received authentication type error counts in this interface.
C32 snVrrpIf2RxHeaderErrCntsEx	1.3.6.1.4.1.1991.1.2.12.4.1.1.3	Counter32	read-only	The received Header error counts in this interface.
C32 snVrrpIf2RxVridErrCnts	1.3.6.1.4.1.1991.1.2.12.4.1.1.6	Counter32	read-only	The received unfound VRID error counts in this interface.
snVrrpIf2Table	1.3.6.1.4.1.1991.1.2.12.4.1		not-accessible	The VRRP and VRRPE Interface Table describes the interfaces from the viewpoint of VRRP and VRRPE.
OCT snVrrpIfAuthPassword	1.3.6.1.4.1.1991.1.2.12.2.1.1.3	OCTET STRING	read-write	The simple text password is allowed if only if the snVrrpIfAuthType type is simpleTextPasswd(1).
INT snVrrpIfAuthType	1.3.6.1.4.1.1991.1.2.12.2.1.1.2	INTEGER	read-write	The authentication type of this interface.
snVrrpIfEntry	1.3.6.1.4.1.1991.1.2.12.2.1.1		not-accessible	The VRRP Interface Entry describes one interface from the viewpoint of VRRP.
I32 snVrrpIfMaxNumVridPerIntf	1.3.6.1.4.1.1991.1.2.12.1.3	Integer32	read-only	Indicates the maximum number of VRID per interface.
I32 snVrrpIfMaxNumVridPerSystem	1.3.6.1.4.1.1991.1.2.12.1.4	Integer32	read-only	Indicates the maximum number of VRID per system.
I32 snVrrpIfPort	1.3.6.1.4.1.1991.1.2.12.2.1.1.1	Integer32	read-only	The IP port of this VRRP interface.
C32 snVrrpIfRxAuthPwdMismatchErrCnts	1.3.6.1.4.1.1991.1.2.12.2.1.1.6	Counter32	read-only	The received authentication password mismatched error counts in this interface.
C32 snVrrpIfRxAuthTypeErrCnts	1.3.6.1.4.1.1991.1.2.12.2.1.1.5	Counter32	read-only	The received authentication type error counts in this interface.
C32 snVrrpIfRxHeaderErrCnts	1.3.6.1.4.1.1991.1.2.12.2.1.1.4	Counter32	read-only	The received Header error counts in this interface.
C32 snVrrpIfRxVridErrCnts	1.3.6.1.4.1.1991.1.2.12.2.1.1.7	Counter32	read-only	The received unfound VRID error counts in this interface.
INT snVrrpIfStateChangeTrap	1.3.6.1.4.1.1991.1.2.12.1.2	INTEGER	read-write	Indicates whether the SNMP agent process is permitted to generate vrrp and vrrpe interface state change traps.
snVrrpIfTable	1.3.6.1.4.1.1991.1.2.12.2.1		not-accessible	The VRRP Interface Table describes the interfaces from the viewpoint of VRRP.
snVrrpIntf	1.3.6.1.4.1.1991.1.2.12.2
snVrrpIntf2	1.3.6.1.4.1.1991.1.2.12.4
snVrrpVirRtr	1.3.6.1.4.1.1991.1.2.12.3
snVrrpVirRtr2	1.3.6.1.4.1.1991.1.2.12.5
INT snVrrpVirRtr2Activate	1.3.6.1.4.1.1991.1.2.12.5.1.1.11	INTEGER	read-write	This object specifies the Vrrp Router's activate command as: disabled(0)...deactivate this Vrrp and Vrrpe Routers. enabled(1)....activate this Vrrp and Vrrpe Routers.
INT snVrrpVirRtr2AdvertiseBackup	1.3.6.1.4.1.1991.1.2.12.5.1.1.26	INTEGER	read-write	Set Advertise this backup router to master
INT snVrrpVirRtr2BackupInt	1.3.6.1.4.1.1991.1.2.12.5.1.1.12	INTEGER	read-write	Time interval between backup routers hello message advertisements (seconds).
INT snVrrpVirRtr2CfgPriority	1.3.6.1.4.1.1991.1.2.12.5.1.1.3	INTEGER	read-write	This object specifies the priority to be used for the virtual router master election process. Higher values imply higher priority. A priority of '0', although not settable, is sent by the master router to indicate that this router has ceased to participate in VRRP and a backup virtual router should transition to become a new master. A priority of 255 is only for VRRP - owner. Not valid for number to configure VRRPE.
I32 snVrrpVirRtr2CurrDeadInt	1.3.6.1.4.1.1991.1.2.12.5.1.1.24	Integer32	read-only	Current Dead interval (in 100 milliseconds).
INT snVrrpVirRtr2CurrPriority	1.3.6.1.4.1.1991.1.2.12.5.1.1.5	INTEGER	read-only	The higher the number the higher the priority is. This object will be adjusted dynamically with the track priority when the Track Port states first changes from UP to DOWN.
INT snVrrpVirRtr2DeadInt	1.3.6.1.4.1.1991.1.2.12.5.1.1.7	INTEGER	read-write	Dead interval (seconds).
snVrrpVirRtr2Entry	1.3.6.1.4.1.1991.1.2.12.5.1.1		not-accessible	The Vrrp and Vrrpe virtual router Entry describes one virtual router from the viewpoint of Vrrp and Vrrpe.
INT snVrrpVirRtr2HelloInt	1.3.6.1.4.1.1991.1.2.12.5.1.1.6	INTEGER	read-write	Time interval between advertisements (seconds).
INT snVrrpVirRtr2Id	1.3.6.1.4.1.1991.1.2.12.5.1.1.1	INTEGER	read-only	One of the virtual router ID of this Vrrp and Vrrpe interface.
INT snVrrpVirRtr2IpAddrCount	1.3.6.1.4.1.1991.1.2.12.5.1.1.28	INTEGER	read-only	The number of IP addresses that are associated with this virtual router. This number is equal to the number of rows in the vrrpAssoIpAddrTable that correspond to a given IF index/VRID pair.
OCT snVrrpVirRtr2IpAddrMask	1.3.6.1.4.1.1991.1.2.12.5.1.1.10	OCTET STRING	read-write	The numbers of IP Addresses of this virtual router of this interface.
IP snVrrpVirRtr2MasterIpAddr	1.3.6.1.4.1.1991.1.2.12.5.1.1.27	IpAddress	read-only	The master router's real/virtual (primary) IP address. This is the IP address listed as the source in VRRP and VRRPE advertisement last received by this virtual router.
INT snVrrpVirRtr2Ownership	1.3.6.1.4.1.1991.1.2.12.5.1.1.2	INTEGER	read-write	The ownership of this Vrrp router interface can be set either owner(1) or backup(2). VirRtr SNMP-GET returns incomplete(0), it means no IP address has assigned to this Vrrp router interface. vrrpe protocol has no owner(1), can only be set to backup(2) or incomplete(0).
INT snVrrpVirRtr2PreemptMode	1.3.6.1.4.1.1991.1.2.12.5.1.1.8	INTEGER	read-write	This mode controls whether a higher priority Backup router preempts a lower priority Master. The mode with enabled(1) allow preemption and disabled(0) prohibit preemption.
INT snVrrpVirRtr2RowStatus	1.3.6.1.4.1.1991.1.2.12.5.1.1.13	INTEGER	read-write	This object is used to create and delete row in the table and control if they are used. The values that can be written are: delete(3)...deletes the row create(4)...creates a new row modify(5)...modifies an existing row VirRtr the row exists, then a SET with value of create(4) returns error 'badValue'. Deleted rows go away immediately. The following values can be returned on reads: noSuch(0)...no such row invalid(1)...Setting it to 'invalid' has the effect of rendering it inoperative.. valid(2)....the row exists and is valid
C32 snVrrpVirRtr2RxArpPktDropCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.14	Counter32	read-only	The received Vrrp and Vrrpe ARP Packet Drop Counts.
C32 snVrrpVirRtr2RxHelloIntMismatchCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.19	Counter32	read-only	The counts of the virtual router interface with hello interval mismatch counts.
C32 snVrrpVirRtr2RxHigherPriorityCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.21	Counter32	read-only	The counts of the virtual router interface with higher Priority.
C32 snVrrpVirRtr2RxIpMismatchCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.18	Counter32	read-only	The received Vrrp and Vrrpe IP Address mismatching Counts.
C32 snVrrpVirRtr2RxIpPktDropCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.15	Counter32	read-only	The received Vrrp and Vrrpe IP Packet Drop Counts.
C32 snVrrpVirRtr2RxNumOfIpMismatchCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.17	Counter32	read-only	The received Vrrp and Vrrpe Number of IP Addresses mismatching Counts.
C32 snVrrpVirRtr2RxPortMismatchCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.16	Counter32	read-only	The received Vrrp and Vrrpe Port mismatching Counts.
C32 snVrrpVirRtr2RxPriorityZeroFromMasterCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.20	Counter32	read-only	The counts of the virtual router interface with Priority zero from the master.
INT snVrrpVirRtr2State	1.3.6.1.4.1.1991.1.2.12.5.1.1.9	INTEGER	read-only	This object specifies the Vrrp and vrrpe Router's interface state as: init(0)...initialization state. master(1)...master state. backup(2)...backup state.
snVrrpVirRtr2Table	1.3.6.1.4.1.1991.1.2.12.5.1		not-accessible	The Vrrp and Vrrpe virtual router Entry describes one virtual router from the viewpoint of Vrrp and Vrrpe.
OCT snVrrpVirRtr2TrackPortList	1.3.6.1.4.1.1991.1.2.12.5.1.1.25	OCTET STRING	read-write	This object specifies the identity of the physical port and virtual ports whose state is to be monitored. Each port index is an ifIndex, if there are consecutive 4 or more ifIndex then they will be encoded like below. Encoding and decoding scheme is range based: Each range prefix with 0000 (2 octets) where 0000 is not valid ifIndex. Next 2 octets indicates lower range ifIndex, followed by 2 octets of higher range ifIndex. Individual(non range) ones will be displayed as it is. Ex: port list: 0001..0005 0015 0032..0047 Port list in PDU: 0000 0001 0005 000f 0000 0020 002f. If this object is configured then the Preference Level of this interface will be adjusted dynamically depending on the state of the Track Port. The interface's Preference Level is reduced by value of Preference Level parameter when the Track Port states first changes from UP to DOWN. When the Track Port next comes up the interface's Preference Level is increased by the amount specified by the Preference Level. The router VRRP and VRRP-E physical track port membership.
INT snVrrpVirRtr2TrackPriority	1.3.6.1.4.1.1991.1.2.12.5.1.1.4	INTEGER	read-write	The higher the number the higher the priority is. After this object is configured, the snVrrpVirRtr2CurrPriority of this interface will be adjusted dynamically with this track priority when the Track Port states first changes from UP to DOWN.
C32 snVrrpVirRtr2TransToBackupStateCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.23	Counter32	read-only	The counts of the virtual router interface transition to backup state.
C32 snVrrpVirRtr2TransToMasterStateCnts	1.3.6.1.4.1.1991.1.2.12.5.1.1.22	Counter32	read-only	The counts of the virtual router interface transition to master state.
MAC snVrrpVirRtr2VirtualMacAddr	1.3.6.1.4.1.1991.1.2.12.5.1.1.29	MacAddress	read-only	The virtual MAC address of the virtual router. Although this object can be derived from the 'snVrrpVirRtr2VrId' object, it is defined so that it is easily obtainable by a management application and can be included in VRRP-related SNMP traps.
INT snVrrpVirRtrActivate	1.3.6.1.4.1.1991.1.2.12.3.1.1.11	INTEGER	read-write	This object specifies the VRRP Router's activate command as: disabled(0)...deactivate this VRRP Router. enabled(1)....activate this VRRP Router.
INT snVrrpVirRtrCfgPriority	1.3.6.1.4.1.1991.1.2.12.3.1.1.4	INTEGER	read-write	The higher the number the higher the priority is. This parameter decides which backup router should becomes the Active Router for the interface. A backup Router with higher priority selected to becomes the Active Router. Therefore, this Object can be set if only if snVrrpVirRtrOwnership is set to backup(2).
I32 snVrrpVirRtrCurrDeadInt	1.3.6.1.4.1.1991.1.2.12.3.1.1.26	Integer32	read-only	Current Dead interval (in 100 milliseconds).
INT snVrrpVirRtrCurrPriority	1.3.6.1.4.1.1991.1.2.12.3.1.1.6	INTEGER	read-only	The higher the number the higher the priority is. This object will be adjusted dynamically with the track priority when the Track Port states first changes from UP to DOWN.
INT snVrrpVirRtrDeadInt	1.3.6.1.4.1.1991.1.2.12.3.1.1.8	INTEGER	read-write	Dead interval (seconds).
snVrrpVirRtrEntry	1.3.6.1.4.1.1991.1.2.12.3.1.1		not-accessible	The VRRP virtual router Entry describes one virtual router from the viewpoint of VRRP.
INT snVrrpVirRtrHelloInt	1.3.6.1.4.1.1991.1.2.12.3.1.1.7	INTEGER	read-write	Time interval between advertisements (seconds).
INT snVrrpVirRtrId	1.3.6.1.4.1.1991.1.2.12.3.1.1.2	INTEGER	read-only	One of the virtual router ID of this VRRP interface.
OCT snVrrpVirRtrIpAddrMask	1.3.6.1.4.1.1991.1.2.12.3.1.1.12	OCTET STRING	read-write	The numbers of IP Addresses of this virtual router of this interface.
INT snVrrpVirRtrOwnership	1.3.6.1.4.1.1991.1.2.12.3.1.1.3	INTEGER	read-write	The ownership of this VRRP router interface can be set either owner(1) or backup(2). VirRtr SNMP-GET returns incomplete(0), it means no IP address has assigned to this VRRP router interface.
I32 snVrrpVirRtrPort	1.3.6.1.4.1.1991.1.2.12.3.1.1.1	Integer32	read-only	The IP port of this VRRP interface.
INT snVrrpVirRtrPreemptMode	1.3.6.1.4.1.1991.1.2.12.3.1.1.9	INTEGER	read-write	This mode controls whether a higher priority Backup router preempts a lower priority Master. The mode with enabled(1) allow preemption and disabled(0) prohibit preemption.
INT snVrrpVirRtrRowStatus	1.3.6.1.4.1.1991.1.2.12.3.1.1.15	INTEGER	read-write	This object is used to create and delete row in the table and control if they are used. The values that can be written are: delete(3)...deletes the row create(4)...creates a new row modify(5)...modifies an existing row VirRtr the row exists, then a SET with value of create(4) returns error 'badValue'. Deleted rows go away immediately. The following values can be returned on reads: noSuch(0)...no such row invalid(1)...Setting it to 'invalid' has the effect of rendering it inoperative.. valid(2)....the row exists and is valid
C32 snVrrpVirRtrRxArpPktDropCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.16	Counter32	read-only	The received VRRP ARP Packet Drop Counts.
C32 snVrrpVirRtrRxHelloIntMismatchCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.21	Counter32	read-only	The counts of the virtual router interface with hello interval mismatch counts.
C32 snVrrpVirRtrRxHigherPriorityCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.23	Counter32	read-only	The counts of the virtual router interface with higher Priority.
C32 snVrrpVirRtrRxIpMismatchCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.20	Counter32	read-only	The received VRRP IP Address mismatching Counts.
C32 snVrrpVirRtrRxIpPktDropCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.17	Counter32	read-only	The received VRRP IP Packet Drop Counts.
C32 snVrrpVirRtrRxNumOfIpMismatchCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.19	Counter32	read-only	The received VRRP Number of IP Addresses mismatching Counts.
C32 snVrrpVirRtrRxPortMismatchCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.18	Counter32	read-only	The received VRRP Port mismatching Counts.
C32 snVrrpVirRtrRxPriorityZeroFromMasterCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.22	Counter32	read-only	The counts of the virtual router interface with Priority zero from the master.
INT snVrrpVirRtrState	1.3.6.1.4.1.1991.1.2.12.3.1.1.10	INTEGER	read-only	This object specifies the VRRP Router's interface state as: init(0)...initialization state. master(1)...master state. backup(2)...backup state.
snVrrpVirRtrTable	1.3.6.1.4.1.1991.1.2.12.3.1		not-accessible	The VRRP virtual router Entry describes one virtual router from the viewpoint of VRRP.
OCT snVrrpVirRtrTrackPortList	1.3.6.1.4.1.1991.1.2.12.3.1.1.27	OCTET STRING	read-write	This object specifies the identity of the physical port whose state is to be monitored. Each port index is a 16-bit integer in big endian order. 8-bit is the slot number, the other 8-bit is the port number. Default value is 0 length octet string. If this object is configured then the Preference Level of this interface will be adjusted dynamically depending on the state of the Track Port. The interface's Preference Level is reduced by value of Preference Level parameter when the Track Port states first changes from UP to DOWN. When the Track Port next comes up the interface's Preference Level is increased by the amount specified by the Preference Level. The router VRRP physical track port membership.
OCT snVrrpVirRtrTrackPortMask	1.3.6.1.4.1.1991.1.2.12.3.1.1.13	OCTET STRING	read-write	This object specifies the identity of the physical port whose state is to be monitored. Each bit is a port of the system. Default value is 0. VirRtr this object is configured then the Preference Level of this interface will be adjusted dynamically depending on the state of the Track Port. The interface's Preference Level is reduced by value of Preference Level parameter when the Track Port states first changes from UP to DOWN. When the Track Port next comes up the interface's Preference Level is increased by the amount specified by the Preference Level. The Chassis/Stackable router VRRP Track port membership. The size of the OCTET STRING for Chassis is 32. The size of the OCTET STRING for Stackable is 4. (It was obsoleted after release 07100, replaced by snVrrpVirRtrTrackPortList)
INT snVrrpVirRtrTrackPriority	1.3.6.1.4.1.1991.1.2.12.3.1.1.5	INTEGER	read-write	The higher the number the higher the priority is. after this object is configured, the snVrrpVirRtrCurrPriority of this interface will be adjusted dynamically with this track priority when the Track Port states first changes from UP to DOWN.
OCT snVrrpVirRtrTrackVifMask	1.3.6.1.4.1.1991.1.2.12.3.1.1.14	OCTET STRING	read-write	This object specifies the identity of the virtual interface whose state is to be monitored. Each bit is a port of the system. Default value is 0. VirRtr this object is configured then the Preference Level of this interface will be adjusted dynamically depending on the state of the Track Port. The interface's Preference Level is reduced by value of Preference Level parameter when the Track Port states first changes from UP to DOWN. When the Track Port next comes up the interface's Preference Level is increased by the amount specified by the Preference Level. The Chassis/Stackable router VRRP Track port membership The size of the OCTET STRING for Chassis is 8. The size of the OCTET STRING for Stackable is 4. (It was obsoleted after release 07100, replaced by snVrrpVirRtrTrackVifPortList)
OCT snVrrpVirRtrTrackVifPortList	1.3.6.1.4.1.1991.1.2.12.3.1.1.28	OCTET STRING	read-write	This object specifies the identity of the virtual interface whose state is to be monitored. Each port index is a 16-bit integer in big endian order. Default value is 0 length octet string. If this object is configured then the Preference Level of this interface will be adjusted dynamically depending on the state of the Track Port. The interface's Preference Level is reduced by value of Preference Level parameter when the Track Port states first changes from UP to DOWN. When the Track Port next comes up the interface's Preference Level is increased by the amount specified by the Preference Level. The router VRRP virtual port track membership.
C32 snVrrpVirRtrTransToBackupStateCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.25	Counter32	read-only	The counts of the virtual router interface transition to backup state.
C32 snVrrpVirRtrTransToMasterStateCnts	1.3.6.1.4.1.1991.1.2.12.3.1.1.24	Counter32	read-only	The counts of the virtual router interface transition to master state.

RFC description

VRRP (Virtual Router Redundancy Protocol) implementation on Brocade routers for gateway failover and redundancy.

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