F10-VIRTUAL-LINK-TRUNK-MIB

All MIBs › F10-VIRTUAL-LINK-TRUNK-MIB

Organization: Dell Inc

Last Updated: 2012-11-28

Category: Technology: High Availability, Technology: Link Aggregation, Vendor: Dell/DNOS

Description: Dell Force10 MIB for Virtual Link Trunking (VLT), managing dual-homed multi-chassis link aggregation peer configuration.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock 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.

What Is F10-VIRTUAL-LINK-TRUNK-MIB?

This Dell Force10 MIB covers Virtual Link Trunking (VLT), a proprietary dual-brain multi-chassis link aggregation feature that lets two independent Force10 switches present a single logical Layer 2 domain to downstream devices while remaining independent L2/L3 switches to the upstream network. It exposes VLT domain configuration (domain ID, MAC address, priority) and rich operational/fault status, including peer status, inter-chassis link (ICL) status, and heartbeat status between the two VLT peer chassis. It is heavily oriented toward hardware/software fault monitoring of the VLT control plane: f10VLTPeerStatus and f10VLTHBeatStatus reveal whether the peer switch and its keepalive heartbeat are healthy, and f10VLTIclStatus reports the state of the critical inter-chassis link that synchronizes the two peers. As a proprietary multi-chassis feature it has no direct IETF MIB dependency but conceptually overlays standard link-aggregation behavior across two chassis. It is deployed in Dell Force10 data center and campus core designs where VLT is used to eliminate spanning-tree blocking and provide active-active redundancy between paired switches. Network engineers evaluating or troubleshooting this functionality can download the F10-VIRTUAL-LINK-TRUNK-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in F10-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 Force10 switch pair configured for Virtual Link Trunking (data center/campus core)

Monitoring Examples

An admin would poll f10VirtualLinkTrunkTable/f10VirtualLinkTrunkTableEntry to read f10VLTPeerStatus and f10VLTHBeatStatus, and a peer status transitioning to down while heartbeat still shows up would indicate a split-brain risk on the VLT pair. f10VLTIclStatus tracks health of the inter-chassis link itself (f10VLTIclIfIndex identifies which interface carries it), so a failed ICL alongside healthy heartbeat over the backup path (f10VLTBkUpIpAddr) would trigger the VLT notifications defined in f10VirtualLinkTrunkNotifications. f10VLTRole and f10VLTDomainId identify which chassis is primary/secondary and which VLT domain is being reported.

What Can Be Monitored

VLT peer status
inter-chassis link (ICL) status
VLT heartbeat status
VLT role (primary/secondary)
backup heartbeat IP path
VLT domain configuration

Imported Objects

From FORCE10-SMI

f10Mgmt

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 f10VLTStatNumHelloSent OID:

Select a Dell Force10 switch pair (Virtual Link Trunking / VLT multi-chassis LAG) 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 f10VLTStatNumHelloSent 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
f10VirtualLinkTrunkMib	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.
f10VirtualLinkTrunkObjects	1.3.6.1.4.1.6027.3.17.1
f10VirtualLinkTrunkTable	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.
f10VirtualLinkTrunkTableEntry	1.3.6.1.4.1.6027.3.17.1.1.1		not-accessible	Each entry represents information about the specific VLT domain.
U32 f10VLTDomainId	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 f10VLTMacAddr	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 f10VLTPriority	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 f10VLTIclIfIndex	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 f10VLTRole	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 f10VLTPeerStatus	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.
F10 f10VLTIclStatus	1.3.6.1.4.1.6027.3.17.1.1.1.7	F10VLTMemberLinkStatus	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.
F10 f10VLTHBeatStatus	1.3.6.1.4.1.6027.3.17.1.1.1.8	F10VLTMemberLinkStatus	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 f10VLTBkUpIpAddrType	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 f10VLTBkUpIpAddr	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 f10VLTBkUpInterval	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 f10VLTRemoteMacAddr	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 f10VLTRemoteRolePriority	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 f10VLTUnitId	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 f10VLTVersionMajor	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 f10VLTVersionMinor	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 f10VLTRemoteUnitId	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 f10VLTRemoteVersionMajor	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 f10VLTRemoteVersionMinor	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 f10VLTIclBwStatus	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 f10VLTCfgSysMacAddr	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 f10VLTPeerRouting	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 f10VLTPeerRoutingTimeout	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 f10VLTRemotePeerRouting	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.
f10VirtualLinkStatsTable	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.
f10VirtualLinkStatsTableEntry	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 f10VLTStatNumHelloSentEx	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 f10VLTStatNumHelloRcvd	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 f10VLTStatNumHbeatSent	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 f10VLTStatNumHbeatRcvd	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 f10VLTStatNumDomainErrors	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 f10VLTStatNumVersionErrors	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.
f10VirtualLinkDetailsTable	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
f10VirtualLinkDetailsTableEntry	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 f10VLTDetailLocalLagID	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 f10VLTDetailPeerLagID	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 f10VLTDetailLocalStatus	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 f10VLTDetailPeerStatus	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 f10VLTErrorReason	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
f10VirtualLinkTrunkNotifObjects	1.3.6.1.4.1.6027.3.17.2
f10VirtualLinkTrunkNotifications	1.3.6.1.4.1.6027.3.17.2.0
NTF f10VLTRoleChange	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 f10VLTIclStatusChange	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 f10VLTPeerStatusChange	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 f10VLTHBeatStatusChange	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 f10VLTIclBwUsageExceed	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 f10VLTDomainConfigError	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.
f10VirtualLinkTrunkConformance	1.3.6.1.4.1.6027.3.17.3
f10VirtualLinkTrunkCompliances	1.3.6.1.4.1.6027.3.17.3.1
f10VirtualLinkTrunkCompliance	1.3.6.1.4.1.6027.3.17.3.1.1			The compliance statement for the Dell Networking OS Virtual Link Trunk MIB.
f10VirtualLinkTrunkGroups	1.3.6.1.4.1.6027.3.17.3.2
f10VirtualLinkTrunkGroup	1.3.6.1.4.1.6027.3.17.3.2.1			This group represents a collection of objects providing the overall VLT information.
f10VirtualLinkStatisticsGroup	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.
f10VirtualLinkNotificationGroup	1.3.6.1.4.1.6027.3.17.3.2.3			A collection of notification objects for the Dell Networking OS VLT mib
f10VirtualLinkDetailsTableGroup	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

Manages Virtual Link Trunk (VLT) dual-chassis aggregation for Dell Force10 network switches.

Start monitoring Dell Force10 switch pair (Virtual Link Trunking / VLT multi-chassis LAG) 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 F10-VIRTUAL-LINK-TRUNK-MIB