ZYXEL-VLAN-COUNTER-MIB

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Organization: Enterprise Solution ZyXEL

Last Updated: 2012-07-01

Category: ZyXEL VLAN Management

Description: Provides ZyXEL per-VLAN traffic counters for monitoring ingress and egress packet and byte statistics.

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What Is ZYXEL-VLAN-COUNTER-MIB?

ZYXEL-VLAN-COUNTER-MIB is a ZyXEL private enterprise MIB that provides per-VLAN traffic counters, placing it in the switching/traffic statistics category. It exposes ingress and egress packet and byte counts broken out by VLAN, giving visibility into how much traffic each VLAN is carrying through the switch, distinct from the standard per-interface counters in IF-MIB. Its monitoring value is primarily traffic/performance visibility rather than hardware fault detection: administrators use these counters to spot an unexpectedly high-traffic VLAN, which could indicate a broadcast storm or misbehaving device, or a VLAN carrying far less traffic than expected, which could indicate a service outage or misconfigured trunk. It complements the standard IF-MIB interface counters and the switch's VLAN/bridge MIB, since VLAN identifiers and port-VLAN membership come from those base MIBs. It is typically deployed on ZyXEL switches supporting multi-tenant or service-differentiated VLANs where per-VLAN capacity planning and anomaly detection are needed. Engineers can download the ZYXEL-VLAN-COUNTER-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ZYXEL-VLAN-COUNTER-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

ZyXEL managed Ethernet switch

Monitoring Examples

An operator would poll a VLAN's ingress/egress packet and byte counters over successive intervals to compute a traffic rate, then compare it against expected baseline usage for that customer or service VLAN. A VLAN's counter climbing far faster than normal could indicate a broadcast storm or a compromised host flooding traffic, while a counter that flatlines unexpectedly on a VLAN that should be carrying live traffic points to an upstream connectivity or configuration problem. No sample objects were listed for this MIB, so specific table names are unconfirmed, but the functional data is per-VLAN ingress/egress packet and byte counts.

What Can Be Monitored

per-VLAN ingress packet/byte count
per-VLAN egress packet/byte count
VLAN traffic rate trend

Imported Objects

From Q-BRIDGE-MIB

PortList

From SNMPv2-SMI

Counter64
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

RowStatus

From ZYXEL-ES-SMI

esMgmt

OBJECT-IDENTITY

How to Use in IPNetwork Monitor

Example using zyVlanCounterInfoHCOctets OID:

Select a ZyXEL managed Ethernet switch (per-VLAN ingress/egress packet-byte counter 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 zyVlanCounterInfoHCOctets 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 average receive Octets. 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 (in Octets), 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
zyxelVlanCounter	1.3.6.1.4.1.890.1.15.3.87			The subtree for VLAN counter
zyxelVlanCounterSetup	1.3.6.1.4.1.890.1.15.3.87.1
zyxelVlanCounterTable	1.3.6.1.4.1.890.1.15.3.87.1.1		not-accessible	Defines the Vlan Counter Table for providing, via SNMP, the capability of performing vlan counting operations at a remote host and having their results of these operations are stored in the table.
zyxelVlanCounterEntry	1.3.6.1.4.1.890.1.15.3.87.1.1.1		not-accessible	Defines an entry in the zyxelVlanCounterTable.
INT zyVlanCounterVid	1.3.6.1.4.1.890.1.15.3.87.1.1.1.1	INTEGER	not-accessible	VLAN ID where the VLAN counter applies.
U32 zyVlanCounterTimeout	1.3.6.1.4.1.890.1.15.3.87.1.1.1.2	Unsigned32	read-write	Specifies the time-out value, in seconds, for a VLAN counter operation.
POR zyVlanCounterPorts	1.3.6.1.4.1.890.1.15.3.87.1.1.1.3	PortList	read-write	Specify the port for a VLAN counter operation.
ROW zyVlanCounterRowStatus	1.3.6.1.4.1.890.1.15.3.87.1.1.1.4	RowStatus	read-create	This object allows to create and delete a VLAN counter entry.
zyxelVlanCounterStatus	1.3.6.1.4.1.890.1.15.3.87.2
zyxelVlanCounterInfoTable	1.3.6.1.4.1.890.1.15.3.87.2.1		not-accessible	The table that show incoming packet statistics on individual VLAN
zyxelVlanCounterInfoEntry	1.3.6.1.4.1.890.1.15.3.87.2.1.1		not-accessible	Incoming packet statistics information for a particular VLAN.
INT zyVlanCounterInfoVid	1.3.6.1.4.1.890.1.15.3.87.2.1.1.1	INTEGER	not-accessible	VLAN ID where the VLAN counter applies.
C64 zyVlanCounterInfoHCOctetsEx	1.3.6.1.4.1.890.1.15.3.87.2.1.1.2	Counter64	read-only	Average receive Octets
C64 zyVlanCounterInfoHCPackets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.3	Counter64	read-only	Total received number of good packets flowing trhough this VLAN.
C64 zyVlanCounterInfoHCMulticastPackets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.4	Counter64	read-only	Total received number of good multicast packets flowing through this VLAN.
C64 zyVlanCounterInfoHCBroadcastPackets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.5	Counter64	read-only	Total received number of good broadcast packets flowing through this VLAN.
C64 zyVlanCounterInfoHCTaggedPackets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.6	Counter64	read-only	Total received number of VLAN-tagged packets flowing through this VLAN.
C64 zyVlanCounterInfoHCPackets64Octets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.7	Counter64	read-only	Total received number of packets that were 64 octets in length.
C64 zyVlanCounterInfoHCPackets65to127Octets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.8	Counter64	read-only	Total received number of packets that were between 65 and 127 octets in length.
C64 zyVlanCounterInfoHCPackets128to255Octets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.9	Counter64	read-only	Total received number of packets that were between 128 and 255 octets in length.
C64 zyVlanCounterInfoHCPackets256to511Octets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.10	Counter64	read-only	Total received number of packets that were between 256 and 511 octets in length.
C64 zyVlanCounterInfoHCPackets512to1023Octets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.11	Counter64	read-only	Total received number of packets that were between 512 and 1023 octets in length
C64 zyVlanCounterInfoHCPackets1024to1518Octets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.12	Counter64	read-only	Total received number of packets that were between 1024 and 1518 octets in length
C64 zyVlanCounterInfoHCOversizePackets	1.3.6.1.4.1.890.1.15.3.87.2.1.1.13	Counter64	read-only	Total received number of packets that were between 1519 octets and the maximun frame size. The maximun frame size varies depending on your switch model

RFC description

VLAN traffic counter statistics and remote vlan counting operations for ZyXEL network devices.

Start monitoring ZyXEL managed Ethernet switch (per-VLAN ingress/egress packet-byte counter 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 ZYXEL-VLAN-COUNTER-MIB