JUNIPER-VLAN-MIB

All MIBs › JUNIPER-VLAN-MIB

Organization: Juniper Networks, Inc.

Last Updated: 2009-01-09

Category: Technology: Switching/L2, Technology: VLAN, Vendor: Juniper

Description: Juniper Networks MIB for managing VLAN membership, tagging, and forwarding configurations on Juniper EX switching platforms.

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What Is JUNIPER-VLAN-MIB?

JUNIPER-VLAN-MIB is a Juniper Networks enterprise MIB for managing VLAN membership, tagging, and forwarding configuration on Juniper EX-series switching platforms, based on pre-standard IEEE 802.1Q VLAN concepts combined with LAN Emulation Client (LEC) associations. It exposes a VLAN table describing each VLAN's name, ID, and type, along with port-group and MAC-list associations, plus a VLAN interface table covering IP addressing and protocol bindings per VLAN interface. Its monitoring value is chiefly software/configuration status of Layer 2/3 VLAN segmentation: confirming VLAN IDs, names, and interface IP/subnet-mask bindings are correctly provisioned, which helps detect VLAN misconfiguration or unintended overlaps. It represents a pre-standards implementation predating full IEEE 802.1Q ratification and modern Q-BRIDGE-MIB conventions, so it should be interpreted alongside standard bridge/VLAN MIBs where both are present. It is deployed on Juniper EX-series switches in enterprise LAN environments using VLAN segmentation for traffic isolation. Network engineers evaluating or troubleshooting this functionality can download the JUNIPER-VLAN-MIB file directly to load it into their MIB browser.

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

Juniper Networks EX-series switches

Monitoring Examples

An administrator would poll jnxVlanTable to check jnxVlanName, jnxVlanID, and jnxVlanType for each configured VLAN, and jnxVlanInterfaceTable to verify jnxVlanInterfaceIpAddress and jnxVlanInterfaceSubNetMask assigned to each VLAN interface. A VLAN interface showing an unexpected jnxVlanInterfaceIpAddress or a mismatched jnxVlanInterfaceSubNetMask would reveal a VLAN interface misconfiguration causing routing or connectivity issues for that segment. jnxVlanPortGroupInstance and jnxVlanMacListInstance further let an operator confirm which ports and MAC filters are associated with a given VLAN.

What Can Be Monitored

VLAN name and ID
VLAN type
VLAN port group membership
VLAN MAC list associations
VLAN interface IP address and subnet mask
VLAN interface protocol binding

Imported Objects

From IF-MIB

InterfaceIndex

From INET-ADDRESS-MIB

InetAddress
InetAddressPrefixLength
InetAddressType

From JUNIPER-EX-SMI

jnxExVlan

OBJECT-IDENTITY

From SNMPv2-SMI

Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
jnxVlanMIBObjects	1.3.6.1.4.1.2636.3.40.1.5.1			This module contains definitions for management information for pre-standards IEEE 802.1Q VLANs and their association with a Lan Emulation Client (lec). Devices implementing these pre-standards maintain port groupings and associated filters used to form a 'virtual bridge'.
jnxVlanTable	1.3.6.1.4.1.2636.3.40.1.5.1.1		not-accessible	A table of VLAN names and characteristics.
jnxVlanEntry	1.3.6.1.4.1.2636.3.40.1.5.1.1.1		not-accessible	A table entry containing VLAN names and characteristics.
STR jnxVlanName	1.3.6.1.4.1.2636.3.40.1.5.1.1.1.1	DisplayString	not-accessible	Vlan name is the textual name and this is the identifier that the user of a configuration utility will use.
I32 jnxVlanID	1.3.6.1.4.1.2636.3.40.1.5.1.1.1.2	Integer32	read-only	This is the locally significant ID that is used internally by this device to reference this VLAN.
INT jnxVlanType	1.3.6.1.4.1.2636.3.40.1.5.1.1.1.3	INTEGER	read-only	The valn type can be static (1) Dynamic(2)
I32 jnxVlanPortGroupInstance	1.3.6.1.4.1.2636.3.40.1.5.1.1.1.4	Integer32	read-only	jnxVlanPortGroupInstance is the index that identifies that the sub tree in the jnxVlanPortGroupTable helps to retrieve the group of ports in this VLAN.
I32 jnxVlanMacListInstance	1.3.6.1.4.1.2636.3.40.1.5.1.1.1.5	Integer32	read-only	jnxVlanMacListInstance is the index , if this is a MAC-based VLAN which identifies the sub tree to retrieve the list of MAC address to allow into this VLAN. If this is not a MAC-based VLAN then the value is 0
jnxVlanInterfaceTable	1.3.6.1.4.1.2636.3.40.1.5.1.2		not-accessible	A table of VLAN names and characteristics in layer 3.
jnxVlanInterfaceEntry	1.3.6.1.4.1.2636.3.40.1.5.1.2.1		not-accessible	A table entry containing VLAN names and characteristics in layer 3.
IP jnxVlanInterfaceIpAddress	1.3.6.1.4.1.2636.3.40.1.5.1.2.1.1	InetAddress	read-only	This specifies the IPAddress of this interface.
IPt jnxVlanInterfaceProtocol	1.3.6.1.4.1.2636.3.40.1.5.1.2.1.2	InetAddressType	read-only	This specifies the protocol for ipv4.
IP jnxVlanInterfaceSubNetMask	1.3.6.1.4.1.2636.3.40.1.5.1.2.1.3	IpAddress	read-only	This specifies the subnet mask address of the vlan .
IP jnxVlanInterfaceBroadcastAddress	1.3.6.1.4.1.2636.3.40.1.5.1.2.1.4	IpAddress	read-only	This specifies the broadcast address of the vlan.
STR jnxVlanInterfaceDescription	1.3.6.1.4.1.2636.3.40.1.5.1.2.1.5	DisplayString	read-only	jnxvlanInterfaceDescription provides the description for the vlan.
T/F jnxVlanInterfaceAdminStatus	1.3.6.1.4.1.2636.3.40.1.5.1.2.1.6	TruthValue	read-only	This takes care of administration status of the vlan
STR jnxVlanInterfaceOperStatus	1.3.6.1.4.1.2636.3.40.1.5.1.2.1.7	DisplayString	read-only	This specifies the operational status of the vlan
NUM jnxVlanSnmpIfIndex	1.3.6.1.4.1.2636.3.40.1.5.1.2.1.8	InterfaceIndex	read-only	This specifies the SNMP IF Index .
jnxVlanPortGroupTable	1.3.6.1.4.1.2636.3.40.1.5.1.3		not-accessible	A table of port groupings.
jnxVlanPortGroupEntry	1.3.6.1.4.1.2636.3.40.1.5.1.3.1		not-accessible	A table entry containing a port number
I32 jnxVlanPortGroupIndex	1.3.6.1.4.1.2636.3.40.1.5.1.3.1.1	Integer32	not-accessible	Index used so that there can be many different port groups
I32 jnxVlanPort	1.3.6.1.4.1.2636.3.40.1.5.1.3.1.2	Integer32	not-accessible	The vlanPort specifies the port in the vlan.By adding a port here, that port will now be part of any VLAN(s) that this port group is associated with.
INT jnxVlanPortStatus	1.3.6.1.4.1.2636.3.40.1.5.1.3.1.3	INTEGER	read-only	The status of this port relative to the VLAN that points at this port group.[1.autoactive , 2.allowed, 3.allowedActive 4.allowedNotAvail, 5.notAssociated] autoActive : Means that the port is part of this VLAN because the switch automatically added it. allowed : Means that the port has been configured so that if all other criteria (if any) are met, this port is allowed to be in this VLAN. allowedActive : Means the same as allowed plus the fact that there is a device attached to this port and participating in the VLAN. allowedNotAvail: This value is only needed for devices that don't allow a port to be in more than one VLAN at a time. This value means that this port also exists in some other VLAN(s) and is active in another VLAN. Therefore this port is not available to be used in this VLAN. notAssociated : Means that the Port Group is not currently associated with any VLAN.
jnxVlanMacListTable	1.3.6.1.4.1.2636.3.40.1.5.1.4		not-accessible	jnxVlanMacListTable is the table of MAC Lists.
jnxVlanMacListEntry	1.3.6.1.4.1.2636.3.40.1.5.1.4.1		not-accessible	A table entry containing MAC Addresses
I32 jnxVlanMacListIndex	1.3.6.1.4.1.2636.3.40.1.5.1.4.1.1	Integer32	not-accessible	jnxVlanMacListIndex can be used beacuse there can be many different MAC Lists
MAC jnxVlanMacAddress	1.3.6.1.4.1.2636.3.40.1.5.1.4.1.2	MacAddress	read-only	jnxVlanMacAddress is the MAC Address that belongs to this group.
jnxExVlanTable	1.3.6.1.4.1.2636.3.40.1.5.1.5		not-accessible	A table of VLAN names and characteristics.
jnxExVlanEntry	1.3.6.1.4.1.2636.3.40.1.5.1.5.1		not-accessible	A table entry containing VLAN names and characteristics.
I32 jnxExVlanID	1.3.6.1.4.1.2636.3.40.1.5.1.5.1.1	Integer32	not-accessible	This is the locally significant ID that is used internally by this device to reference this VLAN.
STR jnxExVlanName	1.3.6.1.4.1.2636.3.40.1.5.1.5.1.2	DisplayString	read-only	Vlan name is the textual name.
INT jnxExVlanType	1.3.6.1.4.1.2636.3.40.1.5.1.5.1.3	INTEGER	read-only	The vlan type can be static (1) Dynamic(2)
I32 jnxExVlanPortGroupInstance	1.3.6.1.4.1.2636.3.40.1.5.1.5.1.4	Integer32	read-only	jnxExVlanPortGroupInstance is the index that identifies that the sub tree in the jnxVlanPortGroupTable helps to retrieve the group of ports in this VLAN.
U32 jnxExVlanTag	1.3.6.1.4.1.2636.3.40.1.5.1.5.1.5	Unsigned32	read-only	jnxExVlanTag gives the Vlan Tag details for each Vlan.
jnxExVlanInterfaceTable	1.3.6.1.4.1.2636.3.40.1.5.1.6		not-accessible	A table of VLAN names and characteristics in layer 3.
jnxExVlanInterfaceEntry	1.3.6.1.4.1.2636.3.40.1.5.1.6.1		not-accessible	A table entry containing VLAN names and characteristics in layer 3.
IPt jnxExVlanInterfaceProtocol	1.3.6.1.4.1.2636.3.40.1.5.1.6.1.1	InetAddressType	read-only	This specifies the protocol for ipv4.
IP jnxExVlanInterfaceIpAddress	1.3.6.1.4.1.2636.3.40.1.5.1.6.1.2	InetAddress	read-only	This specifies the IPAddress of this interface.
ADR jnxExVlanInterfacePrefixLength	1.3.6.1.4.1.2636.3.40.1.5.1.6.1.3	InetAddressPrefixLength	read-only	This specifies the length of subnet mask address of the vlan .
IP jnxExVlanInterfaceBroadcastAddress	1.3.6.1.4.1.2636.3.40.1.5.1.6.1.4	InetAddress	read-only	This specifies the broadcast address of the vlan.
STR jnxExVlanInterfaceDescription	1.3.6.1.4.1.2636.3.40.1.5.1.6.1.5	DisplayString	read-only	jnxExvlanInterfaceDescription provides the description for the vlan.
INT jnxExVlanInterfaceAdminStatus	1.3.6.1.4.1.2636.3.40.1.5.1.6.1.6	INTEGER	read-only	This takes care of administration status of the vlan
INT jnxExVlanInterfaceOperStatus	1.3.6.1.4.1.2636.3.40.1.5.1.6.1.7	INTEGER	read-only	This specifies the operational status of the vlan
NUM jnxExVlanSnmpIfIndex	1.3.6.1.4.1.2636.3.40.1.5.1.6.1.8	InterfaceIndex	read-only	This specifies the SNMP IF Index .
jnxExVlanPortGroupTable	1.3.6.1.4.1.2636.3.40.1.5.1.7		not-accessible	A table of port groupings.
jnxExVlanPortGroupEntry	1.3.6.1.4.1.2636.3.40.1.5.1.7.1		not-accessible	A table entry containing a port number
I32 jnxExVlanPortGroupIndex	1.3.6.1.4.1.2636.3.40.1.5.1.7.1.1	Integer32	not-accessible	Index used so that there can be many different port groups
I32 jnxExVlanPort	1.3.6.1.4.1.2636.3.40.1.5.1.7.1.2	Integer32	not-accessible	The vlanPort specifies the port in the vlan.By adding a port here, that port will now be part of any VLAN(s) that this port group is associated with.
INT jnxExVlanPortStatus	1.3.6.1.4.1.2636.3.40.1.5.1.7.1.3	INTEGER	read-only	The status of this port relative to the VLAN that points at this port group.[1.autoactive , 2.allowed, 3.allowedActive 4.allowedNotAvail, 5.notAssociated] autoActive : Means that the port is part of this VLAN because the switch automatically added it. allowed : Means that the port has been configured so that if all other criteria (if any) are met, this port is allowed to be in this VLAN. allowedActive : Means the same as allowed plus the fact that there is a device attached to this port and participating in the VLAN. allowedNotAvail: This value is only needed for devices that don't allow a port to be in more than one VLAN at a time. This value means that this port also exists in some other VLAN(s) and is active in another VLAN. Therefore this port is not available to be used in this VLAN. notAssociated : Means that the Port Group is not currently associated with any VLAN.
INT jnxExVlanPortTagness	1.3.6.1.4.1.2636.3.40.1.5.1.7.1.4	INTEGER	read-only	The VlanPortTaqness gives whether the Port is tagged or untagged.
INT jnxExVlanPortAccessMode	1.3.6.1.4.1.2636.3.40.1.5.1.7.1.5	INTEGER	read-only	The VlanPortAccessMode gives whether the Port is Access or Trunk.

RFC description

SNMP MIB for managing Virtual LANs (VLANs) on Juniper EX-series switches, providing pre-standards IEEE 802.1Q VLAN configuration including port grouping, VLAN tagging, interface membership, and virtual bridge definitions.

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Download JUNIPER-VLAN-MIB

What Is JUNIPER-VLAN-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description