DELL-NETWORKING-VIRTUAL-LINK-TRUNK-MIB

All MIBs › DELL-NETWORKING-VIRTUAL-LINK-TRUNK-MIB

Organization: Dell Inc

Last Updated: 2012-11-28

Category: VLAN and Bridging, Vendor: Dell

Description: Manages Virtual Link Trunking (VLT) configuration and peer status for Dell Networking switches.

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What Is DELL-NETWORKING-VIRTUAL-LINK-TRUNK-MIB?

DELL-NETWORKING-VIRTUAL-LINK-TRUNK-MIB is a Dell proprietary MIB implementing VLT (Virtual Link Trunking), a dual-chassis control-plane mechanism that lets two independent Dell switches present themselves as a single logical Layer 2 domain to downstream devices with LAG bundles split across both chassis. Its table, keyed by VLT domain, records MAC address, priority, ICL (Inter-Chassis Link) ifIndex, local role, peer/ICL/heartbeat status, backup-link IP address/type and interval, remote MAC address and role priority, local/remote unit ID and version, ICL bandwidth status, configured system MAC, and peer-routing enable/timeout. As a configuration/status MIB it lets an administrator confirm both VLT chassis see each other as healthy peers (ICL, heartbeat) before trusting the pair for downstream LAG failover. It is deployed on Dell Networking switches using VLT. Engineers can download the DELL-NETWORKING-VIRTUAL-LINK-TRUNK-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DELL-NETWORKING-VIRTUAL-LINK-TRUNK-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

Dell Networking switches (Virtual Link Trunking)

Monitoring Examples

An administrator checks dellNetVLTPeerStatus and dellNetVLTHBeatStatus to confirm both chassis in a VLT domain see each other as healthy before relying on it for downstream LAG redundancy.

What Can Be Monitored

VLT peer/ICL/heartbeat status

Imported Objects

From DELL-NETWORKING-SMI

dellNetMgmt

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress
TEXTUAL-CONVENTION
TimeInterval

How to Use in IPNetwork Monitor

Example using dellNetVLTStatNumHelloSent OID:

Select a Dell Networking switch (Virtual Link Trunking/VLT) 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 dellNetVLTStatNumHelloSent 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. The count of Hello Packets sent across the ICL for synchronization. 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 Counter32-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, 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
dellNetVirtualLinkTrunkMib	1.3.6.1.4.1.6027.3.17			This MIB module provides information on Dual Brain Virtual Link Trunk(VLT) feature which is a control plane mechanism to provide Layer2 multipathing between access network devices (switches or servers) and the core network. VLT represents a single logical layer 2 domain from the view of downstream devices that have LAG bundles terminating on separate chassis in the virtual link trunk domain. However, the two VLT chassis are independent L2/L3 switches for devices in the upstream network. A sample of VLT scenario: --------------------------------------------------------------- \| _______________ \| \| \| Edge router \| \| \| \|_______________\| \| \| / \ \| \| / \ \| \| VLT / \ \| \| ____________/_______________________\____________ . \| \| \| _______/ Back Up Link \_______ \| /\|\\| \| \| \| \|-------------------------\| \| \| \| \| \| \| \| \| ------- \| \| \| L3\| \| \| \| \| S4810 \|________\| Inter \|________\| S4810 \| \|_____\| \| \| \| \|________\|Chassis\|________\| \| \| L2\| \| \| \| \| \| \| Link \| \| \| \| \| \| \| VLT port \_____\ ------- /____/VLT port\\|/\| \| \|_____\_____\_________________________/____/_____\| . \| \| \ \ -----------------/ / \| \| \ \----/------------ / \| \| \ / \ / \| \| \ / \ / \| \|Lag(active)Lag(active) \| \| ___\__/___________________\_/______ \| \| \| _______ Stacking ______ \| \| \| \| \| S60 \|--------------\| S60 \| \| \| \| \| \|__\____\| \|____/_\| \| \| \| \|_____\______________________/______\| \| \| \ /-->Nic teaming \| \| \__________________/ \| \| \| Nic1 Nic2 \| \| \| \| Server \| \| \| \|____________________\| \| --------------------------------------------------------------- Benefits of VLT are as follows: > Allows a single device to use LAG across two upstream devices > Eliminates Spanning Tree Protocol (STP) blocked ports > Provides a loop-free topology > Uses all available uplink bandwidth > Provides fast convergence if either the link or a device fails > Provides link-level resiliency > Assures high availability GLOSSARY AND ABBREVIATIONS VLT - Virtual Link Trunk The combined port channel between the VLT peer devices and the downstream device. VLT Peer device One of a pair of devices that are connected with the special port channel known as the chassis interconnect trunk. VLT Chassis Interconnect Trunk The link used to synchronize states between the VLT peer devices. VLT domain This domain includes both VLT peer devices, the VLT chassis interconnect trunk, and all of the port channels in the VLT connected to the downstream devices. VLT Backup link The backup link monitors the vitality of a VLT peer device. The backup trunk sends configurable, periodic heart beat messages between VLT peer devices. ICL Abbreviation for Chassis InterConnect Link.
dellNetVirtualLinkTrunkObjects	1.3.6.1.4.1.6027.3.17.1
dellNetVirtualLinkTrunkTable	1.3.6.1.4.1.6027.3.17.1.1		not-accessible	This table provides the information about Virtual Link Trunks. A row is added to the table when a VLT domain is configured in the device. A row is deleted from the table when the configured VLT domain is removed.
dellNetVirtualLinkTrunkTableEntry	1.3.6.1.4.1.6027.3.17.1.1.1		not-accessible	Each entry represents information about the specific VLT domain.
U32 dellNetVLTDomainId	1.3.6.1.4.1.6027.3.17.1.1.1.1	Unsigned32	read-only	This oject represents the Virtual Link Trunk Domain's id.
MAC dellNetVLTMacAddr	1.3.6.1.4.1.6027.3.17.1.1.1.2	MacAddress	read-only	This object represents the MAC Address value assigned to this Virtual Link Trunk domain.
U32 dellNetVLTPriority	1.3.6.1.4.1.6027.3.17.1.1.1.3	Unsigned32	read-only	This object represents the Virtual Link Trunk domain's System Priority value.
NUM dellNetVLTIclIfIndex	1.3.6.1.4.1.6027.3.17.1.1.1.4	InterfaceIndex	read-only	This object represents the interface index of the link configured as the Inter Chassis Link for the Virtual Link Trunk domain.
INT dellNetVLTRole	1.3.6.1.4.1.6027.3.17.1.1.1.5	INTEGER	read-only	This object represents the role of the device in the Virtual Link Trunk domain configured.
INT dellNetVLTPeerStatus	1.3.6.1.4.1.6027.3.17.1.1.1.6	INTEGER	read-only	This object represents the status of the VLT Peer i.e whether it is active, or in disabled/errored state. notEstablished - set if ICL Link is either in notEstablished status or error status. peerUp - set if ICL Link is up. peerDown - set if both ICL link and Backup link are down linkDown - set if ICL link down and Backup link is up.
DEL dellNetVLTIclStatus	1.3.6.1.4.1.6027.3.17.1.1.1.7	DellNetVLTMemberLinkStatus	read-only	This object represents the state of the IC link aggregation. linkNotEstablished - ICL Hello has not yet started.Initial State. linkUp - Hello protocol is established and the VLT operations are up. linkDown - Communication with Peer is lost. linkError - Communication with Peer is established but configuration incompatible.
DEL dellNetVLTHBeatStatus	1.3.6.1.4.1.6027.3.17.1.1.1.8	DellNetVLTMemberLinkStatus	read-only	This object represents the status of the heart beat link/backup link. linkNotEstablished - Heartbeat has not yet started. Initial stage. linkUp - Heartbeat started and Remote is Up. linkDown - Heartbeat lost. linkError - This indicates a configuration error.
IPt dellNetVLTBkUpIpAddrType	1.3.6.1.4.1.6027.3.17.1.1.1.9	InetAddressType	read-only	This object represents the address family of the Backup link designated for the Virtual Link Trunk Domain.
IP dellNetVLTBkUpIpAddr	1.3.6.1.4.1.6027.3.17.1.1.1.10	InetAddress	read-only	This object represents the Ip address of the backup link.
NUM dellNetVLTBkUpInterval	1.3.6.1.4.1.6027.3.17.1.1.1.11	TimeInterval	read-only	This object represents the time interval for the VLT heart-beat timer.
MAC dellNetVLTRemoteMacAddr	1.3.6.1.4.1.6027.3.17.1.1.1.12	MacAddress	read-only	This object represents the MAC Address of the Remote system that is part of the VLT Domain.
U32 dellNetVLTRemoteRolePriority	1.3.6.1.4.1.6027.3.17.1.1.1.13	Unsigned32	read-only	This object represents the role priority of the Remote System that is part of the Virtual Link Trunk Domain.
U32 dellNetVLTUnitId	1.3.6.1.4.1.6027.3.17.1.1.1.14	Unsigned32	read-only	This object represents the configured unit ID for the Virtual Link Trunk domain.
U32 dellNetVLTVersionMajor	1.3.6.1.4.1.6027.3.17.1.1.1.15	Unsigned32	read-only	This object represents the major version of for the Virtual Link Trunk domain protocol running.
U32 dellNetVLTVersionMinor	1.3.6.1.4.1.6027.3.17.1.1.1.16	Unsigned32	read-only	This object represents the minor version of for the Virtual Link Trunk domain protocol running.
U32 dellNetVLTRemoteUnitId	1.3.6.1.4.1.6027.3.17.1.1.1.17	Unsigned32	read-only	This object represents the configured unit ID for the Virtual Link Trunk domain on the remote node.
U32 dellNetVLTRemoteVersionMajor	1.3.6.1.4.1.6027.3.17.1.1.1.18	Unsigned32	read-only	This object represents the major version of for the Virtual Link Trunk domain protocol running on the remote node.
U32 dellNetVLTRemoteVersionMinor	1.3.6.1.4.1.6027.3.17.1.1.1.19	Unsigned32	read-only	This object represents the minor version of for the Virtual Link Trunk domain protocol running on the remote node.
INT dellNetVLTIclBwStatus	1.3.6.1.4.1.6027.3.17.1.1.1.20	INTEGER	read-only	This object represents the status of the VLT ICL Bandwidth usage i.e whether it crosses threshold, or below threshold state. below-threshold - set if ICL Link BW usage is below 80% above-threshold - set if ICL link BW usage is above 80%.
MAC dellNetVLTCfgSysMacAddr	1.3.6.1.4.1.6027.3.17.1.1.1.21	MacAddress	read-only	This object represents the System MAC Address value configured the Virtual Link Trunk domain.
INT dellNetVLTPeerRouting	1.3.6.1.4.1.6027.3.17.1.1.1.22	INTEGER	read-only	This object represents the state of the VLT Peer routing i.e whether it is enabled or disabled.
NUM dellNetVLTPeerRoutingTimeout	1.3.6.1.4.1.6027.3.17.1.1.1.23	TimeInterval	read-only	This object represents the time interval for VLT peer-routing timer, which is configured for removing the local-da of the other peer in case of peer failure.
INT dellNetVLTRemotePeerRouting	1.3.6.1.4.1.6027.3.17.1.1.1.24	INTEGER	read-only	This object represents the state of the VLT Peer routing configured on the remote peer node i.e whether it is enabled or disabled.
dellNetVirtualLinkStatsTable	1.3.6.1.4.1.6027.3.17.1.2		not-accessible	This table provides the details of the statistical information on traffic traversing port channels to attached devices, Interchassis link, and backup link.
dellNetVirtualLinkStatsTableEntry	1.3.6.1.4.1.6027.3.17.1.2.1		not-accessible	Each entry is the device specific statistical information on traffic in the links in VLT domain.
C32 dellNetVLTStatNumHelloSentEx	1.3.6.1.4.1.6027.3.17.1.2.1.1	Counter32	read-only	The count of Hello Packets sent across the ICL for synchronization.
C32 dellNetVLTStatNumHelloRcvd	1.3.6.1.4.1.6027.3.17.1.2.1.2	Counter32	read-only	The count of Hello Packets received from the remote VLT through the ICL.
C32 dellNetVLTStatNumHbeatSent	1.3.6.1.4.1.6027.3.17.1.2.1.3	Counter32	read-only	The count of periodic Keepalive messages sent by the VLT device to the peer.
C32 dellNetVLTStatNumHbeatRcvd	1.3.6.1.4.1.6027.3.17.1.2.1.4	Counter32	read-only	The count of periodic Keepalive messages received by the VLT device from the peer.
C32 dellNetVLTStatNumDomainErrors	1.3.6.1.4.1.6027.3.17.1.2.1.5	Counter32	read-only	The count of hello/heartbeat packets dropped by the VLT device which failed to match the device's VLT domain Id.
C32 dellNetVLTStatNumVersionErrors	1.3.6.1.4.1.6027.3.17.1.2.1.6	Counter32	read-only	The count of hello/heartbeat packets dropped by the VLT device which failed to match the device's VLT message's version.
dellNetVirtualLinkDetailsTable	1.3.6.1.4.1.6027.3.17.1.3		not-accessible	This table provides the details of port channel information by traversing port channels to attached devices, peer port-channel ID, status and Active Vlans
dellNetVirtualLinkDetailsTableEntry	1.3.6.1.4.1.6027.3.17.1.3.1		not-accessible	Each entry is the port channel specific information on links between TOR and VLT domain.
U32 dellNetVLTDetailLocalLagID	1.3.6.1.4.1.6027.3.17.1.3.1.1	Unsigned32	read-only	The Detail of the vlt local lag ID.
U32 dellNetVLTDetailPeerLagID	1.3.6.1.4.1.6027.3.17.1.3.1.2	Unsigned32	read-only	The Detail of the vlt peer lag ID
INT dellNetVLTDetailLocalStatus	1.3.6.1.4.1.6027.3.17.1.3.1.3	INTEGER	read-only	The interface operational status of the vlt local LAG ID
INT dellNetVLTDetailPeerStatus	1.3.6.1.4.1.6027.3.17.1.3.1.4	INTEGER	read-only	The interface operational status of the vlt peer LAG ID.
INT dellNetVLTErrorReason	1.3.6.1.4.1.6027.3.17.1.4	INTEGER	accessible-for-notify	This object represents the VLT domain config error,the possible errors are: noError - No Error. domainIdMismatch - local and remote vlt domain Id mismatch. unitIdMismatch - local or remote vlt Unit Id is Identical or not configured. versionMismatch - local and remote vlt version does not meet criteria for peer UP. sysMacMismatch - local and remote vlt system MAC mismatch. peerRoutingMismatch - local and remote vlt peer-routing config mismatch
dellNetVirtualLinkTrunkNotifObjects	1.3.6.1.4.1.6027.3.17.2
dellNetVirtualLinkTrunkNotifications	1.3.6.1.4.1.6027.3.17.2.0
NTF dellNetVLTRoleChange	1.3.6.1.4.1.6027.3.17.2.0.1			The agent generates this norification to denote the change in role of the VLT device in the VLT domain. This notification carries the information about the new role. The possible roles are as follows: 1. StandAlone 2. Primary 3. Secondary
NTF dellNetVLTIclStatusChange	1.3.6.1.4.1.6027.3.17.2.0.2			The agent generates this notification to denote the change in InterConnect Link Status.The notification contains information on the new ICL status. The possible states are as follows: 1. NotEstabished 2. LinkUp 3. LinkDown 4. LinkError
NTF dellNetVLTPeerStatusChange	1.3.6.1.4.1.6027.3.17.2.0.3			The agent generates this notification to denote the change in Status of the Peer in the VLT domain. This notification contains information on the new status of the peer device. The possible states are as follows: 1. NotEstablished 2. PeerUp 3. PeerDown 4. LinkDown
NTF dellNetVLTHBeatStatusChange	1.3.6.1.4.1.6027.3.17.2.0.4			The agent generates this notification to denote the change in Backup Link Status. The notification contains information on the new BackupLink Status. The possible states are as follows: 1. NotEstabished 2. LinkUp 3. LinkDown 4. LinkError
NTF dellNetVLTIclBwUsageExceed	1.3.6.1.4.1.6027.3.17.2.0.5			The IFM agent generates this notification to denote the change in Bandwidth usage of ICL Link, when it crosses the threshold above 80 %. The possible states are as follows: 0. Below threshold 1. Above threshold
NTF dellNetVLTDomainConfigError	1.3.6.1.4.1.6027.3.17.2.0.6			The agent generates this notification to denote there is a error/conflict in the VLT domain config parameters (either locally or in remote node which prevent the peer up. The mismatch can be domain Id, unitId,version or system MAC. The notification contains information on the error/mismatch type.
dellNetVirtualLinkTrunkConformance	1.3.6.1.4.1.6027.3.17.3
dellNetVirtualLinkTrunkCompliances	1.3.6.1.4.1.6027.3.17.3.1
dellNetVirtualLinkTrunkCompliance	1.3.6.1.4.1.6027.3.17.3.1.1			The compliance statement for the Dell Networking OS Virtual Link Trunk MIB.
dellNetVirtualLinkTrunkGroups	1.3.6.1.4.1.6027.3.17.3.2
dellNetVirtualLinkTrunkGroup	1.3.6.1.4.1.6027.3.17.3.2.1			This group represents a collection of objects providing the overall VLT information.
dellNetVirtualLinkStatisticsGroup	1.3.6.1.4.1.6027.3.17.3.2.2			This group represents a collection of objects providing the overall statistical information on the VLT.
dellNetVirtualLinkNotificationGroup	1.3.6.1.4.1.6027.3.17.3.2.3			A collection of notification objects for the Dell Networking OS VLT mib
dellNetVirtualLinkDetailsTableGroup	1.3.6.1.4.1.6027.3.17.3.2.4			This group represents a collection of objects providing the LAG details on the VLT.

RFC description

Dell Networking vendor-private MIB for Virtual Link Trunk (VLT) configuration and status on Dell Force10 switches.

Start monitoring Dell Networking switch (Virtual Link Trunking/VLT) 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 DELL-NETWORKING-VIRTUAL-LINK-TRUNK-MIB