AT-VCSTACK-MIB

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Organization: Allied Telesis, Inc

Last Updated: 2011-11-03

Category: VLAN and Bridging, Vendor: Allied Telesis

Description: Manages Allied Telesis VCStack virtual chassis stacking, reporting member switch roles, VCStack IDs, and link health.

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What Is AT-VCSTACK-MIB?

AT-VCSTACK-MIB is an Allied Telesis private MIB for VCStack, the virtual chassis stacking feature in AlliedWare Plus that lets multiple physical switches operate as one logical device. It would expose per-member data such as stack member role (master, backup, member), VCStack member ID, and stack link/ring health. This is fundamentally a hardware-status MIB for high-availability stacking: it lets an operator confirm all expected members are present, identify which unit currently holds the master role, and detect a degraded or broken stack interconnect link before it causes a stack split or failover. It is specific to Allied Telesis's proprietary stacking architecture rather than an IETF standard. It is deployed wherever AlliedWare Plus switches are configured in a VCStack for resiliency and simplified management. Network engineers evaluating or troubleshooting this functionality can download the AT-VCSTACK-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in AT-VCSTACK-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

Allied Telesis stackable switch (VCStack)

Monitoring Examples

No concrete object names were supplied for this MIB. Conceptually, an admin would poll a stack member table to confirm the expected number of members are present, check each member's role to confirm exactly one master exists, and monitor stack link status to catch a member that has silently dropped off the stack ring.

What Can Be Monitored

stack member role
member ID/presence
stack link/ring health

Imported Objects

From AT-SMI-MIB

sysinfo

OBJECT-IDENTITY

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
vcstack	1.3.6.1.4.1.207.8.4.4.3.13			This MIB file contains definitions of managed objects for Virtual Chassis Stacking in AlliedWare Plus.
vcstackNotifications	1.3.6.1.4.1.207.8.4.4.3.13.0
NTF vcstackRoleChangeNotify	1.3.6.1.4.1.207.8.4.4.3.13.0.1			A notification generated when the stack member's role is changed.
NTF vcstackMemberJoinNotify	1.3.6.1.4.1.207.8.4.4.3.13.0.2			A notification generated when a member joins in the stack.
NTF vcstackMemberLeaveNotify	1.3.6.1.4.1.207.8.4.4.3.13.0.3			A notification generated when a member leaves from the stack.
NTF vcstackResiliencyLinkHealthCheckReceivingNotify	1.3.6.1.4.1.207.8.4.4.3.13.0.4			A notification generated when the resiliency link is activated.
NTF vcstackResiliencyLinkHealthCheckTimeOutNotify	1.3.6.1.4.1.207.8.4.4.3.13.0.5			A notification generated when the slave's receive timer has timed out indicating that the Slave has lost contact with the Master via the resiliency link.
NTF vcstackStkPortLinkUpNotify	1.3.6.1.4.1.207.8.4.4.3.13.0.6			A notification generated when the link of stack port is up.
NTF vcstackStkPortLinkDownNotify	1.3.6.1.4.1.207.8.4.4.3.13.0.7			A notification generated when the link of stack port is down.
U32 vcstackNbrMemberIdNotify	1.3.6.1.4.1.207.8.4.4.3.13.0.8	Unsigned32	accessible-for-notify	The stack member id of the neighbor of the member sent this notification.
STR vcstackStkPortNameNotify	1.3.6.1.4.1.207.8.4.4.3.13.0.9	DisplayString	accessible-for-notify	The stack port name related this notification.
INT vcstackStatus	1.3.6.1.4.1.207.8.4.4.3.13.1	INTEGER	read-only	The overall stack status.
INT vcstackOperationalStatus	1.3.6.1.4.1.207.8.4.4.3.13.2	INTEGER	read-only	Whether the stack is enabled or disabled.
I32 vcstackMgmtVlanId	1.3.6.1.4.1.207.8.4.4.3.13.3	Integer32	read-only	The current stacking management VLAN ID.
IP vcstackMgmtVlanSubnetAddr	1.3.6.1.4.1.207.8.4.4.3.13.4	IpAddress	read-only	The current stacking management VLAN subnet address.
vcstackTable	1.3.6.1.4.1.207.8.4.4.3.13.5		not-accessible	A list of stack members.
vcstackEntry	1.3.6.1.4.1.207.8.4.4.3.13.5.1		not-accessible	A set of parameters that describe the status of a stack member
U32 vcstackId	1.3.6.1.4.1.207.8.4.4.3.13.5.1.1	Unsigned32	read-only	Stack member ID.
U32 vcstackPendingId	1.3.6.1.4.1.207.8.4.4.3.13.5.1.2	Unsigned32	read-only	The pending stack member ID.
MAC vcstackMacAddr	1.3.6.1.4.1.207.8.4.4.3.13.5.1.3	MacAddress	read-only	Stack member's hardware MAC address.
U32 vcstackPriority	1.3.6.1.4.1.207.8.4.4.3.13.5.1.4	Unsigned32	read-only	The priority for election of the stack master. The lowest number has the highest priority.
INT vcstackRole	1.3.6.1.4.1.207.8.4.4.3.13.5.1.5	INTEGER	read-only	Stack member's role in the stack. Note: value type fallbackMaster(7) is deprecated.
STR vcstackLastRoleChange	1.3.6.1.4.1.207.8.4.4.3.13.5.1.6	DisplayString	read-only	The time and date when the stack member last changed its role in the stack.
STR vcstackHostname	1.3.6.1.4.1.207.8.4.4.3.13.5.1.7	DisplayString	read-only	Stack member's hostname.
STR vcstackProductType	1.3.6.1.4.1.207.8.4.4.3.13.5.1.8	DisplayString	read-only	Stack members product type.
T/F vcstackSWVersionAutoSync	1.3.6.1.4.1.207.8.4.4.3.13.5.1.9	TruthValue	read-only	Whether or not to automatically upgrade the stack member's software.
INT vcstackFallbackConfigStatus	1.3.6.1.4.1.207.8.4.4.3.13.5.1.10	INTEGER	read-only	The status of the fallback configuration file. For AW+ releases, this object is not supported as from software release 5.3.4.
STR vcstackFallbackConfigFilename	1.3.6.1.4.1.207.8.4.4.3.13.5.1.11	DisplayString	read-only	The filename of the fallback configuration file. For AW+ releases, this object is not supported as from software release 5.3.4.
INT vcstackResiliencyLinkStatus	1.3.6.1.4.1.207.8.4.4.3.13.5.1.12	INTEGER	read-only	The status of the stack members resilency link.
STR vcstackResiliencyLinkInterfaceName	1.3.6.1.4.1.207.8.4.4.3.13.5.1.13	DisplayString	read-only	The name of the interface the resiliency link is configured on.
INT vcstackActiveStkHardware	1.3.6.1.4.1.207.8.4.4.3.13.5.1.14	INTEGER	read-only	The stack ports hardware type. Note: Value type none(3) is deprecated.
INT vcstackStkPort1Status	1.3.6.1.4.1.207.8.4.4.3.13.5.1.15	INTEGER	read-only	Status of the stack port 1.
U32 vcstackStkPort1NeighbourId	1.3.6.1.4.1.207.8.4.4.3.13.5.1.16	Unsigned32	read-only	The ID of the neighbour on stack port 1. A value of zero indicates no learned neighbour.
INT vcstackStkPort2Status	1.3.6.1.4.1.207.8.4.4.3.13.5.1.17	INTEGER	read-only	Status of the stack port 2.
U32 vcstackStkPort2NeighbourId	1.3.6.1.4.1.207.8.4.4.3.13.5.1.18	Unsigned32	read-only	The ID of the neighbour on stack port 2. A value of zero indicates no learned neighbour.
C32 vcstackNumMembersJoined	1.3.6.1.4.1.207.8.4.4.3.13.5.1.19	Counter32	read-only	The number of times the stack acquires a member.
C32 vcstackNumMembersLeft	1.3.6.1.4.1.207.8.4.4.3.13.5.1.20	Counter32	read-only	The number of times the stack loses a member.
C32 vcstackNumIdConflict	1.3.6.1.4.1.207.8.4.4.3.13.5.1.21	Counter32	read-only	The number of times that a stack member ID conflicts.
C32 vcstackNumMasterConflict	1.3.6.1.4.1.207.8.4.4.3.13.5.1.22	Counter32	read-only	The number of times that a stack master conflict occurs.
C32 vcstackNumMasterFailover	1.3.6.1.4.1.207.8.4.4.3.13.5.1.23	Counter32	read-only	The number of times that the stack master fails.
C32 vcstackNumStkPort1NbrIncompatible	1.3.6.1.4.1.207.8.4.4.3.13.5.1.24	Counter32	read-only	The number of times that the neighbour is detected as incompatible on stack port 1.
C32 vcstackNumStkPort2NbrIncompatible	1.3.6.1.4.1.207.8.4.4.3.13.5.1.25	Counter32	read-only	The number of times that the neighbour is detected as incompatible on stack port 2.
INT vcstackReadinessStatus	1.3.6.1.4.1.207.8.4.4.3.13.5.1.26	INTEGER	read-only	Indicates how readily a stack member can take over as master if the current stack master were to fail. Possible values are: init (1) - the stack member is completing startup initialization. syncing (2) - the stack member is synchronizing state information with the stack master following startup. ready (3) - the stack member is fully synchronized with the current master and is ready to take over immediately. syncError (4) - state information on the stack member is not correctly synchronized with the current stack master. For a stack member to take over as stack master with the least possible network disruption, it must have the 'ready (3)' status.
vcstackTraps	1.3.6.1.4.1.207.8.4.4.3.13.6
NTF vcstackRoleChange	1.3.6.1.4.1.207.8.4.4.3.13.6.1			A trap generated when the stack member's role is changed.
NTF vcstackMemberJoin	1.3.6.1.4.1.207.8.4.4.3.13.6.2			A trap generated when a member joins in the stack.
NTF vcstackMemberLeave	1.3.6.1.4.1.207.8.4.4.3.13.6.3			A trap generated when a member leaves from the stack.
NTF vcstackResiliencyLinkHealthCheckReceiving	1.3.6.1.4.1.207.8.4.4.3.13.6.4			A trap generated when the resiliency link is activated.
NTF vcstackResiliencyLinkHealthCheckTimeOut	1.3.6.1.4.1.207.8.4.4.3.13.6.5			A trap generated when the slave's receive timer has timed out indicating that the Slave has lost contact with the Master via the resiliency link.
NTF vcstackStkPortLinkUp	1.3.6.1.4.1.207.8.4.4.3.13.6.6			A trap generated when the link of stack port is up.
NTF vcstackStkPortLinkDown	1.3.6.1.4.1.207.8.4.4.3.13.6.7			A trap generated when the link of stack port is down.
U32 vcstackNbrMemberId	1.3.6.1.4.1.207.8.4.4.3.13.6.8	Unsigned32	accessible-for-notify	The stack member id of the neighbor of the member sent this trap.
STR vcstackStkPortName	1.3.6.1.4.1.207.8.4.4.3.13.6.9	DisplayString	accessible-for-notify	The stack port name related this trap.
INT vcstackVirtualMacAddressStatus	1.3.6.1.4.1.207.8.4.4.3.13.7	INTEGER	read-only	Whether the virtual MAC address is enabled or disabled.
I32 vcstackVirtualChassisId	1.3.6.1.4.1.207.8.4.4.3.13.8	Integer32	read-only	The current virtual chassis ID.
MAC vcstackVirtualMacAddr	1.3.6.1.4.1.207.8.4.4.3.13.9	MacAddress	read-only	The virtual MAC address used by the stack.
U32 vcstackMasterId	1.3.6.1.4.1.207.8.4.4.3.13.10	Unsigned32	read-only	The stack ID of the master unit.
INT vcstackDisabledMasterMonitoringStatus	1.3.6.1.4.1.207.8.4.4.3.13.11	INTEGER	read-only	Whether the disabled master monitoring is enabled or disabled.

RFC description

Manages virtual chassis stacking configuration and monitoring on Allied Telesis AlliedWare Plus switches.

Start monitoring Allied Telesis managed switches and 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 AT-VCSTACK-MIB

What Is AT-VCSTACK-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description