DELL-NETWORKING-VIRTUAL-LINK-TRUNK-MIB
AI MIB Summary
The DELL-NETWORKING-VIRTUAL-LINK-TRUNK-MIB monitors and manages the state, configuration, and statistics of Dell Networking Virtual Link Trunk (VLT) domains, specifically tracking chassis interconnect links, peer synchronization status, and downstream LAG interfaces to ensure loop-free Layer 2 multipathing. This module provides visibility into VLT-specific operational metrics such as backup link heartbeats, peer device health, and port channel aggregation states across dual-chassis VLT peer pairs.
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.
Main OID:
dellNetVirtualLinkTrunkMib.1.3.6.1.4.1.6027.3.17
59
Objects
Active
Status
6
Dependencies
Imported Objects
Objects
59 total| Object Name |
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dellNetVirtualLinkTrunkMibThis 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. MODULE-IDENTITY .1.3.6.1.4.1.6027.3.17 |
dellNetVirtualLinkTrunkObjects OBJECT IDENTIFIER .1.3.6.1.4.1.6027.3.17.1 |
dellNetVirtualLinkTrunkTableThis 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. SEQUENCE OF DellNetVirtualLinkTrunkTableEntry .1.3.6.1.4.1.6027.3.17.1.1 |
dellNetVirtualLinkTrunkTableEntryEach entry represents information about the specific VLT domain. DellNetVirtualLinkTrunkTableEntry .1.3.6.1.4.1.6027.3.17.1.1.1 |
dellNetVLTDomainIdThis oject represents the Virtual Link Trunk Domain's id.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.1.1.1 |
dellNetVLTMacAddrThis object represents the MAC Address value assigned to this Virtual Link Trunk domain.ro MacAddress (SNMPv2-TC) .1.3.6.1.4.1.6027.3.17.1.1.1.2 |
dellNetVLTPriorityThis object represents the Virtual Link Trunk domain's System Priority value.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.1.1.3 |
dellNetVLTIclIfIndexThis object represents the interface index of the link configured as the Inter Chassis Link for the Virtual Link Trunk domain.ro InterfaceIndex (IF-MIB) .1.3.6.1.4.1.6027.3.17.1.1.1.4 |
dellNetVLTRoleThis object represents the role of the device in the Virtual Link Trunk domain configured.ro Enumeration .1.3.6.1.4.1.6027.3.17.1.1.1.5 |
dellNetVLTPeerStatusThis 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.ro Enumeration .1.3.6.1.4.1.6027.3.17.1.1.1.6 |
dellNetVLTIclStatusThis 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.ro DellNetVLTMemberLinkStatus .1.3.6.1.4.1.6027.3.17.1.1.1.7 |
dellNetVLTHBeatStatusThis 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.ro DellNetVLTMemberLinkStatus .1.3.6.1.4.1.6027.3.17.1.1.1.8 |
dellNetVLTBkUpIpAddrTypeThis object represents the address family of the Backup link designated for the Virtual Link Trunk Domain.ro InetAddressType (INET-ADDRESS-MIB) .1.3.6.1.4.1.6027.3.17.1.1.1.9 |
dellNetVLTBkUpIpAddrThis object represents the Ip address of the backup link.ro InetAddress (INET-ADDRESS-MIB) .1.3.6.1.4.1.6027.3.17.1.1.1.10 |
dellNetVLTBkUpIntervalThis object represents the time interval for the VLT heart-beat timer.ro TimeInterval .1.3.6.1.4.1.6027.3.17.1.1.1.11 |
dellNetVLTRemoteMacAddrThis object represents the MAC Address of the Remote system that is part of the VLT Domain.ro MacAddress (SNMPv2-TC) .1.3.6.1.4.1.6027.3.17.1.1.1.12 |
dellNetVLTRemoteRolePriorityThis object represents the role priority of the Remote System that is part of the Virtual Link Trunk Domain.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.1.1.13 |
dellNetVLTUnitIdThis object represents the configured unit ID for the Virtual Link Trunk domain.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.1.1.14 |
dellNetVLTVersionMajorThis object represents the major version of for the Virtual Link Trunk domain protocol running.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.1.1.15 |
dellNetVLTVersionMinorThis object represents the minor version of for the Virtual Link Trunk domain protocol running.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.1.1.16 |
dellNetVLTRemoteUnitIdThis object represents the configured unit ID for the Virtual Link Trunk domain on the remote node.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.1.1.17 |
dellNetVLTRemoteVersionMajorThis object represents the major version of for the Virtual Link Trunk domain protocol running on the remote node.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.1.1.18 |
dellNetVLTRemoteVersionMinorThis object represents the minor version of for the Virtual Link Trunk domain protocol running on the remote node.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.1.1.19 |
dellNetVLTIclBwStatusThis 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%.ro Enumeration .1.3.6.1.4.1.6027.3.17.1.1.1.20 |
dellNetVLTCfgSysMacAddrThis object represents the System MAC Address value configured the Virtual Link Trunk domain.ro MacAddress (SNMPv2-TC) .1.3.6.1.4.1.6027.3.17.1.1.1.21 |
dellNetVLTPeerRoutingThis object represents the state of the VLT Peer routing i.e whether it is enabled or disabled.ro Enumeration .1.3.6.1.4.1.6027.3.17.1.1.1.22 |
dellNetVLTPeerRoutingTimeoutThis 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.ro TimeInterval .1.3.6.1.4.1.6027.3.17.1.1.1.23 |
dellNetVLTRemotePeerRoutingThis object represents the state of the VLT Peer routing configured on the remote peer node i.e whether it is enabled or disabled.ro Enumeration .1.3.6.1.4.1.6027.3.17.1.1.1.24 |
dellNetVirtualLinkStatsTableThis table provides the details of the statistical information on traffic traversing port channels to attached devices, Interchassis link, and backup link. SEQUENCE OF DellNetVirtualLinkStatsTableEntry .1.3.6.1.4.1.6027.3.17.1.2 |
dellNetVirtualLinkStatsTableEntryEach entry is the device specific statistical information on traffic in the links in VLT domain. DellNetVirtualLinkStatsTableEntry .1.3.6.1.4.1.6027.3.17.1.2.1 |
dellNetVLTStatNumHelloSentThe count of Hello Packets sent across the ICL for synchronization.ro Counter32 .1.3.6.1.4.1.6027.3.17.1.2.1.1 |
dellNetVLTStatNumHelloRcvdThe count of Hello Packets received from the remote VLT through the ICL.ro Counter32 .1.3.6.1.4.1.6027.3.17.1.2.1.2 |
dellNetVLTStatNumHbeatSentThe count of periodic Keepalive messages sent by the VLT device to the peer.ro Counter32 .1.3.6.1.4.1.6027.3.17.1.2.1.3 |
dellNetVLTStatNumHbeatRcvdThe count of periodic Keepalive messages received by the VLT device from the peer.ro Counter32 .1.3.6.1.4.1.6027.3.17.1.2.1.4 |
dellNetVLTStatNumDomainErrorsThe count of hello/heartbeat packets dropped by the VLT device which failed to match the device's VLT domain Id.ro Counter32 .1.3.6.1.4.1.6027.3.17.1.2.1.5 |
dellNetVLTStatNumVersionErrorsThe count of hello/heartbeat packets dropped by the VLT device which failed to match the device's VLT message's version.ro Counter32 .1.3.6.1.4.1.6027.3.17.1.2.1.6 |
dellNetVirtualLinkDetailsTableThis table provides the details of port channel information by traversing port channels to attached devices, peer port-channel ID, status and Active Vlans SEQUENCE OF DellNetVirtualLinkDetailsTableEntry .1.3.6.1.4.1.6027.3.17.1.3 |
dellNetVirtualLinkDetailsTableEntryEach entry is the port channel specific information on links between TOR and VLT domain. DellNetVirtualLinkDetailsTableEntry .1.3.6.1.4.1.6027.3.17.1.3.1 |
dellNetVLTDetailLocalLagIDThe Detail of the vlt local lag ID.ro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.3.1.1 |
dellNetVLTDetailPeerLagIDThe Detail of the vlt peer lag IDro Unsigned32 .1.3.6.1.4.1.6027.3.17.1.3.1.2 |
dellNetVLTDetailLocalStatusThe interface operational status of the vlt local LAG IDro Enumeration .1.3.6.1.4.1.6027.3.17.1.3.1.3 |
dellNetVLTDetailPeerStatusThe interface operational status of the vlt peer LAG ID.ro Enumeration .1.3.6.1.4.1.6027.3.17.1.3.1.4 |
dellNetVLTErrorReasonThis 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 mismatchro Enumeration .1.3.6.1.4.1.6027.3.17.1.4 |
dellNetVirtualLinkTrunkNotifObjects OBJECT IDENTIFIER .1.3.6.1.4.1.6027.3.17.2 |
dellNetVirtualLinkTrunkNotifications OBJECT IDENTIFIER .1.3.6.1.4.1.6027.3.17.2.0 |
dellNetVLTRoleChangeThe 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 NOTIFICATION-TYPE .1.3.6.1.4.1.6027.3.17.2.0.1 |
dellNetVLTIclStatusChangeThe 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 NOTIFICATION-TYPE .1.3.6.1.4.1.6027.3.17.2.0.2 |
dellNetVLTPeerStatusChangeThe 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 NOTIFICATION-TYPE .1.3.6.1.4.1.6027.3.17.2.0.3 |
dellNetVLTHBeatStatusChangeThe 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 NOTIFICATION-TYPE .1.3.6.1.4.1.6027.3.17.2.0.4 |
dellNetVLTIclBwUsageExceedThe 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 NOTIFICATION-TYPE .1.3.6.1.4.1.6027.3.17.2.0.5 |
dellNetVLTDomainConfigErrorThe 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. NOTIFICATION-TYPE .1.3.6.1.4.1.6027.3.17.2.0.6 |
dellNetVirtualLinkTrunkConformance OBJECT IDENTIFIER .1.3.6.1.4.1.6027.3.17.3 |
dellNetVirtualLinkTrunkCompliances OBJECT IDENTIFIER .1.3.6.1.4.1.6027.3.17.3.1 |
dellNetVirtualLinkTrunkComplianceThe compliance statement for the Dell Networking OS Virtual Link Trunk MIB. Unknown .1.3.6.1.4.1.6027.3.17.3.1.1 |
dellNetVirtualLinkTrunkGroups OBJECT IDENTIFIER .1.3.6.1.4.1.6027.3.17.3.2 |
dellNetVirtualLinkTrunkGroupThis group represents a collection of objects providing the overall VLT information. Unknown .1.3.6.1.4.1.6027.3.17.3.2.1 |
dellNetVirtualLinkStatisticsGroupThis group represents a collection of objects providing the overall statistical information on the VLT. Unknown .1.3.6.1.4.1.6027.3.17.3.2.2 |
dellNetVirtualLinkNotificationGroupA collection of notification objects for the Dell Networking OS VLT mib Unknown .1.3.6.1.4.1.6027.3.17.3.2.3 |
dellNetVirtualLinkDetailsTableGroupThis group represents a collection of objects providing the LAG details on the VLT. Unknown .1.3.6.1.4.1.6027.3.17.3.2.4 |