CISCOSB-VRRP

All MIBs › CISCOSB-VRRP

Organization: Cisco Small Business

Last Updated: 2010-12-09

Category: Routing Protocols, Vendor: RADLAN/Cisco SB

Description: Manages Virtual Router Redundancy Protocol (VRRP) group configuration and failover state on Cisco Small Business switches.

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What Is CISCOSB-VRRP?

CISCOSB-VRRP is a private Cisco Small Business MIB implementing VRRPv3 (Virtual Router Redundancy Protocol) for gateway high-availability on SMB routers/switches. It exposes configuration and operational state for each virtual router instance, including its primary IP address, description, administrative state, protocol version, and master election timers. Its central monitoring value is availability/failover status: tracking rlVrrpv3OperationsPrimaryIpAddrState and rlVrrpv3OperationsMasterPriority reveals whether the local device currently holds the VRRP master role, and the advertisement/skew/master-down interval objects indicate how quickly a failover would be detected if the master disappeared. It builds on the IETF VRRP concepts standardized in RFC 5798 (VRRPv3), implementing that model as a private MIB rather than the IETF VRRP MIB directly. It is typically deployed on pairs of Cisco Small Business routers/switches providing redundant default-gateway service to a LAN segment, with CISCOSB-VRRP SNMP monitoring confirming failover readiness.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCOSB-VRRP. 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

Cisco Small Business (SB/SG series) router/switch

Monitoring Examples

An administrator would poll rlVrrpv3OperationsTable/Entry to check rlVrrpv3OperationsAdminState and rlVrrpv3OperationsPrimaryIpAddrState, confirming which device is master for a given virtual router described by rlVrrpv3OperationsVrDescription. Watching rlVrrpv3OperationsMasterAdvInterval, rlVrrpv3OperationsSkewTime, and rlVrrpv3OperationsMasterDownInterval together shows how long a backup would wait before assuming mastership if advertisements stopped. An unexpected change in rlVrrpv3OperationsMasterPriority or a flap between master/backup states on rlVrrpv3AssociatedIpAddrTable entries would indicate an unstable or failing VRRP peer.

What Can Be Monitored

VRRP admin state
primary IP address and its state
master priority
master advertisement interval
skew time and master-down interval
associated virtual IP addresses

Imported Objects

From CISCOSB-IP

ipSpec

MODULE-IDENTITY

From IF-MIB

InterfaceIndexOrZero

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32
mib-2

From SNMPv2-TC

DisplayString
RowStatus
TimeInterval

How to Use in IPNetwork Monitor

Example using rlVrrpv3CountersChecksumErrors OID:

Select a Cisco Small Business (SB/SG series) router/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 rlVrrpv3CountersChecksumErrors 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 total number of checksum errors received on 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
rlVrrp	1.3.6.1.4.1.9.6.1.101.26.26			The private MIB module definition for VRRPv3 MIB.
rlVrrpv3OperationsTable	1.3.6.1.4.1.9.6.1.101.26.26.1		not-accessible	This table is parallel to vrrpv3OperationsTable, and is used to change VRRP on interface working version, description and display several statuses. It contains private objects.
rlVrrpv3OperationsEntry	1.3.6.1.4.1.9.6.1.101.26.26.1.1		not-accessible	An operation entry mapping for a particular interface.
IP rlVrrpv3OperationsDefaultPrimaryIpAddr	1.3.6.1.4.1.9.6.1.101.26.26.1.1.1	InetAddress	read-only	In the case where there are more than one IP Address (associated IP addresses) for a given `ifIndex', this object is used to specify the IP address that will become the vrrpv3OperationsMasterIpAddr', should the virtual router transition from backup state to master and no vrrpv3OperationsDefaultPrimaryIpAddr was configured.
INT rlVrrpv3OperationsPrimaryIpAddrState	1.3.6.1.4.1.9.6.1.101.26.26.1.1.2	INTEGER	read-only	This object represents enabled/disabled state of user configured primary address of the virtual router.
STR rlVrrpv3OperationsVrDescription	1.3.6.1.4.1.9.6.1.101.26.26.1.1.3	DisplayString	read-write	The description of the VRRP virtual router.
INT rlVrrpv3OperationsAdminState	1.3.6.1.4.1.9.6.1.101.26.26.1.1.4	INTEGER	read-write	This object will enable/disable the virtual router function. Setting the value to `up', will transition the state of the virtual router from `initialize' to `backup' or `master', depending on the value of `vrrpOperPriority'. Setting the value to `down', will transition the router from `master' or `backup' to `initialize'. State transitions may not be immediate; they sometimes depend on other factors, such as the interface (IF) state.
INT rlVrrpv3OperationsVrrpVersion	1.3.6.1.4.1.9.6.1.101.26.26.1.1.5	INTEGER	read-write	Current VRRP virtual router version it is working with.
U32 rlVrrpv3OperationsMasterPriority	1.3.6.1.4.1.9.6.1.101.26.26.1.1.6	Unsigned32	read-only	This object specifies the priority which is used by master router.
NUM rlVrrpv3OperationsMasterAdvInterval	1.3.6.1.4.1.9.6.1.101.26.26.1.1.7	TimeInterval	read-only	The time interval, in centiseconds, which is used by master router for sending advertisement messages.
NUM rlVrrpv3OperationsMasterDownInterval	1.3.6.1.4.1.9.6.1.101.26.26.1.1.8	TimeInterval	read-only	Time interval for Backup to declare Master down (centiseconds).
NUM rlVrrpv3OperationsSkewTime	1.3.6.1.4.1.9.6.1.101.26.26.1.1.9	TimeInterval	read-only	Time to skew Master_Down_Interval in milliseconds.
rlVrrpv3AssociatedIpAddrTable	1.3.6.1.4.1.9.6.1.101.26.26.2		not-accessible	This table is parallel to vrrpv3AssociatedIpAddrTable, and is used to display address statuses. It contains private objects.
rlVrrpv3AssociatedIpAddrEntry	1.3.6.1.4.1.9.6.1.101.26.26.2.1		not-accessible	An entry in the table contains an IP address that is associated with a virtual router
INT rlVrrpv3AssociatedIpAddrState	1.3.6.1.4.1.9.6.1.101.26.26.2.1.1	INTEGER	read-only	This object represents state of the assosiated IP address, backed up by current virtual router.
rlVrrpv3CountersTable	1.3.6.1.4.1.9.6.1.101.26.26.3		not-accessible	Table of virtual router statistics.
rlVrrpv3CountersEntry	1.3.6.1.4.1.9.6.1.101.26.26.3.1		not-accessible	An entry in the table, containing statistics information about a given virtual router.
NUM rlVrrpv3CountersIfIndex	1.3.6.1.4.1.9.6.1.101.26.26.3.1.1	InterfaceIndexOrZero	not-accessible	Interface index
C32 rlVrrpv3CountersChecksumErrorsEx	1.3.6.1.4.1.9.6.1.101.26.26.3.1.2	Counter32	read-only	The total number of checksum errors received on this interface. Counter is only valid as long as there is a VRRP router defined on this interface.
C32 rlVrrpv3CountersRcvdPacketsLength	1.3.6.1.4.1.9.6.1.101.26.26.3.1.3	Counter32	read-only	The total number of packet length errors received on this interface. Counter is only valid as long as there is a VRRP router defined on this interface.
C32 rlVrrpv3CountersIpTtlErrors	1.3.6.1.4.1.9.6.1.101.26.26.3.1.4	Counter32	read-only	The total number of TTL errors received on this interface. Counter is only valid as long as there is a VRRP router defined on this interface.
C32 rlVrrpv3CountersRcvdInvalidTypePackets	1.3.6.1.4.1.9.6.1.101.26.26.3.1.5	Counter32	read-only	The total number of invalid VRRP packet type errors received on this interface. Counter is only valid as long as there is a VRRP router defined on this interface.
C32 rlVrrpv3CountersRcvdInvalidVrrpId	1.3.6.1.4.1.9.6.1.101.26.26.3.1.6	Counter32	read-only	The total number of invalid VRRP id errors received on this interface. Counter is only valid as long as there is a VRRP router defined on this interface.
C32 rlVrrpv3CountersProtoErrors	1.3.6.1.4.1.9.6.1.101.26.26.3.1.7	Counter32	read-only	The total number of invalid VRRP protocol errors received on this interface. Counter is only valid as long as there is a VRRP router defined on this interface.
C32 rlVrrpv3CountersAddressListErrors	1.3.6.1.4.1.9.6.1.101.26.26.3.1.8	Counter32	read-only	The total number of invalid IP address list errors received on this interface. Counter is only valid as long as there is a VRRP router defined on this interface.
C32 rlVrrpv3CountersAdvIntervalErrors	1.3.6.1.4.1.9.6.1.101.26.26.3.1.9	Counter32	read-only	The total number of invalid advertisement interval errors received on this interface. Counter is only valid as long as there is a VRRP router defined on this interface.
C32 rlVrrpv3CountersAuthErrors	1.3.6.1.4.1.9.6.1.101.26.26.3.1.10	Counter32	read-only	The total number of authentication errors received on this interface. Counter is only valid as long as there is a VRRP router defined on this interface.
ROW rlVrrpv3CountersRowStatus	1.3.6.1.4.1.9.6.1.101.26.26.3.1.11	RowStatus	read-write	Row status of the entry. Used for clearing table by setting.

RFC description

Extends VRRPv3 protocol support on Cisco Small Business devices with private objects for version control and operational status.

Start monitoring Cisco Small Business (SB/SG series) router/switch 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 CISCOSB-VRRP