STACK-TOP

All MIBs › STACK-TOP

Organization: ZTE Corp.

Last Updated: 2007-05-28

Category: Stacking / Clustering, ZTE

Description: Defines top-level OID registration and SMI structure for ZTE switch stacking management.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is STACK-TOP?

STACK-TOP is a vendor-specific MIB from ZTE that, despite its name suggesting only top-level OID registration, actually defines managed objects for monitoring switch-stacking topology and master-election behavior across a stack of ZTE switches. It exposes counters and timestamps for master-election voting activity and stack-topology-change events, plus a per-device table describing each stack member's MAC address, device type, and stacking-port assignments. Monitoring this MIB reveals the operational health of the stack's control-plane software, including how often master re-election has occurred, when the stack topology last changed, and whether individual stack members are correctly identified - key indicators of stack instability or a failed/removed unit. It builds on ZTE's proprietary SMI OID tree registration conventions and likely coexists with other ZTE switch MIBs covering interfaces and system status. It is deployed on ZTE switches configured in a hardware stack for unified management as a single logical switch. Engineers can download the STACK-TOP file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in STACK-TOP. 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

ZTE stackable switch

Monitoring Examples

An admin would poll sysMasterVoteTimes and sysMasterLastVoteTime to detect unexpected or repeated master re-elections, which would indicate stack instability, while sysTopChagTimes and sysLastDetecTopEndTime show how frequently and recently the stack topology changed. The sysTopInfoTable/sysTopInfoEntry, keyed by sysDeviceID, exposes sysDeviceMacAddr, sysDeviceType, and sysDeviceStkPortIndex/sysDeviceStkPortNum for each member switch, letting an admin confirm all expected units are present in the stack and correctly connected via their stacking ports.

What Can Be Monitored

master election vote count/timing
stack topology change count and timestamp
per-device MAC address in stack
stacking port assignments
stack member device type/ID

Imported Objects

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
enterprises

From SNMPv2-TC

MacAddress

How to Use in IPNetwork Monitor

Example using sysMasterVoteTimes OID:

Select a ZTE stackable switch (master-election/topology-change status) 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 sysMasterVoteTimes into the Find box to locate it in the OID tree, then select it and click OK. It reports the how many times stack system's master device be voted. 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 Integer32-type OID, Value bounds is the most useful condition here — trigger an alert if the value drifts significantly from its normal baseline, since an unexpected change often points to a real underlying issue. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
zte	1.3.6.1.4.1.3902
zxr10	1.3.6.1.4.1.3902.3
stacktop	1.3.6.1.4.1.3902.3.301
I32 sysMasterVoteTimesEx	1.3.6.1.4.1.3902.3.301.1	Integer32	read-only	How many times stack system's master device be voted.
TIK sysMasterLastVoteTime	1.3.6.1.4.1.3902.3.301.2	TimeTicks	read-only	The ending time when stack system's master device be voted.
TIK sysLastDetecTopEndTime	1.3.6.1.4.1.3902.3.301.3	TimeTicks	read-only	The ending time when the system detected top at the last time.
I32 sysTopChagTimes	1.3.6.1.4.1.3902.3.301.4	Integer32	read-only	How many times the system top changed.
I32 sysTopDetecMsgCount	1.3.6.1.4.1.3902.3.301.5	Integer32	read-only	System topo detected topo protocol message count.
sysTopInfoTable	1.3.6.1.4.1.3902.3.301.6		not-accessible	A list of the topo information.
sysTopInfoEntry	1.3.6.1.4.1.3902.3.301.6.1		not-accessible	An entry to the topo info table.
MAC sysDeviceMacAddr	1.3.6.1.4.1.3902.3.301.6.1.1	MacAddress	read-only	System Device mac address.
I32 sysDeviceStkPortIndex	1.3.6.1.4.1.3902.3.301.6.1.2	Integer32	read-only	System device stack interface port index.
I32 sysDeviceType	1.3.6.1.4.1.3902.3.301.6.1.3	Integer32	read-only	System device type.
I32 sysDeviceStkPortNum	1.3.6.1.4.1.3902.3.301.6.1.4	Integer32	read-only	System device stack interface port number.
I32 sysDeviceID	1.3.6.1.4.1.3902.3.301.6.1.5	Integer32	read-only	System device ID.
I32 sysDeviceMasterPri	1.3.6.1.4.1.3902.3.301.6.1.6	Integer32	read-only	System device's priority in voting master device.
INT sysDeviceStkIfStatus	1.3.6.1.4.1.3902.3.301.6.1.7	INTEGER	read-only	System device stack interface status 1: up 2: down.
I32 sysDeviceStkIfPanel	1.3.6.1.4.1.3902.3.301.6.1.8	Integer32	read-only	System device stack interface panel num.
I32 sysDeviceStkIfPortID	1.3.6.1.4.1.3902.3.301.6.1.9	Integer32	read-only	System device stack interface port num.
MAC sysDeviceStkPortNeibMacAddr	1.3.6.1.4.1.3902.3.301.6.1.10	MacAddress	read-only	System device stack interface neighbor device mac address.
I32 sysDeviceStkPortNeibPortIndex	1.3.6.1.4.1.3902.3.301.6.1.11	Integer32	read-only	System device stack interface neighbor device port index.
sysStkPortMsgStacTable	1.3.6.1.4.1.3902.3.301.7		not-accessible	A list of the stack interface receive and send message statistic information.
sysStkPortMsgStacEntry	1.3.6.1.4.1.3902.3.301.7.1		not-accessible	An entry to the stack interface receive and send message statistic information table.
I32 sysStkDeviceID	1.3.6.1.4.1.3902.3.301.7.1.1	Integer32	read-only	System device ID.
I32 sysStkDeviceStkIfIndex	1.3.6.1.4.1.3902.3.301.7.1.2	Integer32	read-only	System device stack interface index.
I32 sysStkPortRecMsgCount	1.3.6.1.4.1.3902.3.301.7.1.3	Integer32	read-only	System stack interface received message count.
I32 sysStkPortSendMsgCount	1.3.6.1.4.1.3902.3.301.7.1.4	Integer32	read-only	System stack interface send message count.

RFC description

Stack topology, master election, and system voting on ZTE router stackware products.

Start monitoring ZTE stackable switch (master-election/topology-change status) 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 STACK-TOP