ZYXEL-VLAN-STACK-MIB

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Organization: Enterprise Solution ZyXEL

Last Updated: 2012-07-01

Category: ZyXEL VLAN Management

Description: Manages ZyXEL VLAN stacking Q-in-Q for tunneling customer VLANs across a service provider network.

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What Is ZYXEL-VLAN-STACK-MIB?

ZYXEL-VLAN-STACK-MIB is a ZyXEL private enterprise MIB for VLAN stacking (Q-in-Q), a technique that wraps a provider outer VLAN tag around a customer's already-tagged traffic so that many customer VLANs can be tunneled transparently across a shared service-provider network, placing it in the switching/carrier-Ethernet configuration category. It exposes per-port stacking mode (access/tunnel/uplink role) and the outer (S-VLAN/SPVID) tag assigned to customer traffic, rather than performance counters or hardware sensors. Its monitoring role is configuration verification: confirming that customer-facing ports are correctly set to tunnel mode with the right outer VLAN tag, so customer VLAN tags remain intact end-to-end across the provider core. It is a direct extension of the IEEE 802.1Q/802.1ad (Q-in-Q) VLAN tagging standard and depends on the switch's core VLAN/bridge MIB. It is typically deployed on ZyXEL access switches at the edge of a Metro Ethernet or Carrier Ethernet network offering Q-in-Q VLAN tunneling services to multiple business customers. Engineers can download the ZYXEL-VLAN-STACK-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ZYXEL-VLAN-STACK-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 verify the outer S-VLAN tag and stacking mode configured on a customer-facing port to confirm double-tagged frames are being generated/stripped correctly as traffic enters/exits the provider network. If a customer's internal VLAN tags start appearing on the provider core, checking the port's stacking-mode setting would likely reveal it was left in access/untagged mode rather than tunnel mode. No sample objects were listed for this MIB, so specific object names are unconfirmed, but the functional data centers on per-port stacking mode and outer VLAN tag assignment.

What Can Be Monitored

per-port VLAN stacking mode
outer (S-VLAN) tag assignment
tunnel vs. access port role

Imported Objects

From BRIDGE-MIB

dot1dBasePort

OBJECT-TYPE

From P-BRIDGE-MIB

EnabledStatus

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString
RowStatus

From ZYXEL-ES-SMI

esMgmt

OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
zyxelVlanStack	1.3.6.1.4.1.890.1.15.3.89			The subtree for VLAN Stack
zyxelVlanStackSetup	1.3.6.1.4.1.890.1.15.3.89.1
ENA zyVlanStackState	1.3.6.1.4.1.890.1.15.3.89.1.1	EnabledStatus	read-write	Enable/Disable VLAN Stacking for the switch.
zyxelVlanStackPortTable	1.3.6.1.4.1.890.1.15.3.89.1.2		not-accessible	The table contains VLAN stack configuration.
zyxelVlanStackPortEntry	1.3.6.1.4.1.890.1.15.3.89.1.2.1		not-accessible	An entry contains VLAN stack configuration.
INT zyVlanStackPortMode	1.3.6.1.4.1.890.1.15.3.89.1.2.1.1	INTEGER	read-write	VLAN stacking mode of the port: Set Normal mode to have the switch ignore frames received(or transmitted) on this port with VLAN stacking tags. Set Access mode to have the switch add the SP TPID tag to all incoming frames received on this port. It is for ingress ports at the edge of the service provider's network. Set Tunnel mode (available for Gigabit ports only) for egress ports at the edge of the service provider's network. In order to support VLAN stacking on a port, the port must be able to allow frames of 1526 Bytes (1522 Bytes + 4 Bytes for the second tag) to pass through it.
INT zyVlanStackPortVid	1.3.6.1.4.1.890.1.15.3.89.1.2.1.2	INTEGER	read-write	Stacking port VLAN ID is the service provider's VLAN ID (the outer VLAN tag). Set the service provider ID (from 1 to 4094) for frames received on this port.
INT zyVlanStackPortPriority	1.3.6.1.4.1.890.1.15.3.89.1.2.1.3	INTEGER	read-write	Set a priority level (from 0 to 7). This is the service provider's priority level that adds to the frames received on this port. 0 is the lowest priority level and 7 is the highest.
INT zyVlanStackTunnelPortTpid	1.3.6.1.4.1.890.1.15.3.89.1.2.1.4	INTEGER	read-write	TPID is a standard Ethernet type code identifying the frame and indicates whether the frame carries IEEE 802.1Q tag information. Set a four-digit hexadecimal number from 0000 to FFFF that the switch adds in the outer VLAN tag of the frames sent on the tunnel port(s). The switch also uses this to check if the received frames are double-tagged. The value of this field is 0x8100 as defined in IEEE 802.1Q. If the switch needs to communicate with other vendors' devices, they should use the same TPID.
INT zySelectiveQinQMaxNumberOfRules	1.3.6.1.4.1.890.1.15.3.89.1.3	INTEGER	read-only	The maximum number of selective Q-in-Q that can be created.
zyxelSelectiveQinQTable	1.3.6.1.4.1.890.1.15.3.89.1.4		not-accessible	The table contains selective Q-in-Q configuration.
zyxelSelectiveQinQEntry	1.3.6.1.4.1.890.1.15.3.89.1.4.1		not-accessible	An entry contains selective Q-in-Q configuration.
STR zySelectiveQinQName	1.3.6.1.4.1.890.1.15.3.89.1.4.1.1	DisplayString	read-write	Set the name of selective Q-in-Q entry.
INT zySelectiveQinQPort	1.3.6.1.4.1.890.1.15.3.89.1.4.1.2	INTEGER	not-accessible	Interface port ID.
INT zySelectiveQinQCvid	1.3.6.1.4.1.890.1.15.3.89.1.4.1.3	INTEGER	not-accessible	The customer VLAN ID (the inner VLAN tag) from 1 to 4094. This is the VLAN tag carried in the packets from the subscribers.
INT zySelectiveQinQSpvid	1.3.6.1.4.1.890.1.15.3.89.1.4.1.4	INTEGER	read-write	Stacking port VLAN ID is the service provider's VLAN ID (the outer VLAN tag). Set the service provider ID (from 1 to 4094) for frames received on this port.
INT zySelectiveQinQPriority	1.3.6.1.4.1.890.1.15.3.89.1.4.1.5	INTEGER	read-write	Set a priority level (from 0 to 7). This is the service provider's priority level that adds to the frames received on this port. 0 is the lowest priority level and 7 is the highest.
ROW zySelectiveQinQRowStatus	1.3.6.1.4.1.890.1.15.3.89.1.4.1.6	RowStatus	read-create	This object allows entries to be created and deleted from the selective Q-in-Q table

RFC description

Configures and monitors VLAN stacking (QinQ) support on ZyXEL enterprise network switches.

Start monitoring ZyXEL managed Ethernet switch (Q-in-Q per-port stacking-mode/outer-VLAN-tag config 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-STACK-MIB

What Is ZYXEL-VLAN-STACK-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description