DELL-NETWORKING-FIB-MIB

All MIBs › DELL-NETWORKING-FIB-MIB

Organization: Dell Inc

Last Updated: 2011--0-7-

Category: IP and Core Protocols, Routing Protocols, Vendor: Dell

Description: Manages Forwarding Information Base (FIB) entries and routing table statistics for Dell Networking.

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 DELL-NETWORKING-FIB-MIB?

DELL-NETWORKING-FIB-MIB is a Dell Networking OS enterprise MIB that exposes the switch's Forwarding Information Base (FIB), i.e. the hardware-programmed IP routing/forwarding table used for CIDR multipath IP routes. It provides a version table (dellNetIpForwardVersionTable) identifying the address family and FIB version in use, and a forwarding table (dellNetIpForwardTable) listing individual routes with destination, mask, next hop, first hop, and outgoing interface. This is primarily a routing/forwarding-plane data MIB rather than a hardware-sensor MIB; it's used to verify that the control plane's routing decisions have correctly been programmed into the forwarding hardware, a key software/data-plane consistency check on the switch. It is a Dell-specific enterprise MIB used alongside standard IP-forwarding MIB concepts and other Dell Networking OS MIBs (e.g., forwarding-plane statistics) for a complete forwarding-path picture. It is deployed in Dell Networking switches/routers to validate route programming and multipath IP forwarding behavior, particularly in data center and campus core routing deployments. Engineers can download the DELL-NETWORKING-FIB-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DELL-NETWORKING-FIB-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/routers (Dell Networking OS)

Monitoring Examples

An engineer would poll dellNetIpForwardTable, keyed by dellNetIpforwardDest and dellNetIpforwardMask, to confirm a specific route's dellNetIpforwardNextHop and dellNetIpforwardIfIndex match the expected routing policy. If an expected route is missing from the FIB table despite being present in the routing protocol's RIB, that points to a forwarding-plane programming failure or hardware capacity issue such as a full FIB/TCAM. dellNetIpForwardVersionTable would be checked first, alongside chSysCardNumber, to confirm which address family and FIB version is being reported for that line card.

What Can Be Monitored

IP forwarding table entries (routes)
next-hop and outgoing interface per route
FIB version and address family
multipath route programming

Imported Objects

From DELL-NETWORKING-SMI

dellNetMgmt

OBJECT-IDENTITY

From IF-MIB

InterfaceIndexOrZero

From INET-ADDRESS-MIB

InetAddress
InetAddressPrefixLength
InetAddressType

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter64
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress

How to Use in IPNetwork Monitor

Example using dellNetInetCidrIpv4RouteNumber OID:

Select a Dell Networking switch/router (forwarding information base) 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 dellNetInetCidrIpv4RouteNumber into the Find box to locate it in the OID tree, then select it and click OK. It reports the current number of valid IPv4 routes in the routing table. 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 Gauge32-type OID, Value bounds is the most useful condition here — trigger an alert if the count changes significantly from its expected baseline, since an unexpected drop or spike in route count often reflects a routing-protocol issue. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
dellNetIpForwardMib	1.3.6.1.4.1.6027.3.9			This MIB module is used to display CIDR multipath IP Routes.
dellNetIpForwardMibObjects	1.3.6.1.4.1.6027.3.9.1
dellNetIpForwardVersionTable	1.3.6.1.4.1.6027.3.9.1.1		not-accessible	This entity's IP forward version table.
dellNetIpForwardVersionEntry	1.3.6.1.4.1.6027.3.9.1.1.1		not-accessible	The row definition for the ip forward version Table.
IPt dellNetIpForwardAddrFamily	1.3.6.1.4.1.6027.3.9.1.1.1.1	InetAddressType	not-accessible	Address Family of the IP Forwarding Table for which this entry provides the Version information.
C64 dellNetIpForwardVersion	1.3.6.1.4.1.6027.3.9.1.1.1.2	Counter64	read-only	A version number on the Forwarding Table. This is always fetched from one line card.
dellNetIpForwardTable	1.3.6.1.4.1.6027.3.9.1.2		not-accessible	This entity's IP Routing table.
dellNetIpForwardEntry	1.3.6.1.4.1.6027.3.9.1.2.1		not-accessible	A particular route to a particular destination, under a particular policy.
IP dellNetIpforwardDest	1.3.6.1.4.1.6027.3.9.1.2.1.1	IpAddress	read-only	The destination IP address of this route. An entry with a value of 0.0.0.0 is considered a default route.
IP dellNetIpforwardMask	1.3.6.1.4.1.6027.3.9.1.2.1.2	IpAddress	read-only	Indicate the mask to be logical-ANDed with the destination address before being compared to the value in the dellNetIpforwardDest field.
IP dellNetIpforwardNextHop	1.3.6.1.4.1.6027.3.9.1.2.1.3	IpAddress	read-only	On remote routes, the address of the next system en route; Otherwise, 0.0.0.0.
IP dellNetIpforwardFirstHop	1.3.6.1.4.1.6027.3.9.1.2.1.4	IpAddress	read-only	On remote routes, the address of the Gateway to the nexthop; 0.0.0.0 if the Nexthop itself is a Gateway to the Destination
I32 dellNetIpforwardIfIndex	1.3.6.1.4.1.6027.3.9.1.2.1.5	Integer32	read-only	The ifIndex value which identifies the local interface through which the next hop of this route should be reached.
MAC dellNetIpforwardMacAddress	1.3.6.1.4.1.6027.3.9.1.2.1.6	MacAddress	read-only	The Mac address of the NextHop.
OCT dellNetIpforwardEgressPort	1.3.6.1.4.1.6027.3.9.1.2.1.7	OCTET STRING	read-only	The name of the egress port to which the packets will be forwarded.
I32 dellNetIpforwardCamIndex	1.3.6.1.4.1.6027.3.9.1.2.1.8	Integer32	read-only	Cam Entry corresponding to a row.
G32 dellNetInetCidrIpv4RouteNumberEx	1.3.6.1.4.1.6027.3.9.1.3	Gauge32	read-only	The number of current dellNetInetCidrRouteTable entries that are not Invalid and whose dellNetInetCidrRouteDestType is ipv4(1)
G32 dellNetInetCidrIpv6RouteNumber	1.3.6.1.4.1.6027.3.9.1.4	Gauge32	read-only	The number of current dellNetInetCidrRouteTable entries that are not Invalid and whose dellNetInetCidrRouteDestType is ipv6(2)
dellNetInetCidrRouteTable	1.3.6.1.4.1.6027.3.9.1.5		not-accessible	This entity's IP Routing table.
dellNetInetCidrRouteTableEntry	1.3.6.1.4.1.6027.3.9.1.5.1		not-accessible	A particular route to a particular destination Implementers need to be aware that if the total number of elements (octets or sub-identifiers) in inetCidrRouteDest, inetCidrRoutePolicy, and inetCidrRouteNextHop exceeds 111, then OIDs of column instances in this table will have more than 128 sub- identifiers and cannot be accessed using SNMPv1, SNMPv2c, or SNMPv3. For S-Series Platform, Value of chSysCardNumber will always be zero
IPt dellNetInetCidrRouteDestType	1.3.6.1.4.1.6027.3.9.1.5.1.1	InetAddressType	not-accessible	The type of the inetCidrRouteDest address, as defined in the InetAddress MIB. Only those address types that may appear in an actual routing table are allowed as values of this object.
IP dellNetInetCidrRouteDest	1.3.6.1.4.1.6027.3.9.1.5.1.2	InetAddress	not-accessible	The destination IP address of this route. The type of this address is determined by the value of the inetCidrRouteDestType object.
ADR dellNetInetCidrRoutePfxLen	1.3.6.1.4.1.6027.3.9.1.5.1.3	InetAddressPrefixLength	not-accessible	Indicates the number of leading one bits that form the mask to be logical-ANDed with the destination address before being compared to the value in the inetCidrRouteDest field.
IPt dellNetInetCidrRouteNextHopType	1.3.6.1.4.1.6027.3.9.1.5.1.4	InetAddressType	not-accessible	The type of the inetCidrRouteNextHop address, as defined in the InetAddress MIB. Value should be set to unknown(0) for non-remote routes. Only those address types that may appear in an actual routing table are allowed as values of this object.
IP dellNetInetCidrRouteNextHop	1.3.6.1.4.1.6027.3.9.1.5.1.5	InetAddress	not-accessible	On remote routes, the address of the next system en route. For non-remote routes, a zero length string. The type of this address is determined by the value of the inetCidrRouteNextHopType object.
IPt dellNetInetCidrRouteFirstHopType	1.3.6.1.4.1.6027.3.9.1.5.1.6	InetAddressType	not-accessible	The type of the inetCidrRouteFirstHop address, as defined in the InetAddress MIB. Value should be set to unknown(0) for non-remote routes. Only those address types that may appear in an actual routing table are allowed as values of this object.
IP dellNetInetCidrRouteFirstHop	1.3.6.1.4.1.6027.3.9.1.5.1.7	InetAddress	not-accessible	The address of the gateway to the Nexthop. If the nexthop itself is the gateway, a zero length string. The type of this address is determined by the value of the inetCidrRouteFirstHopType object.
NUM dellNetInetCidrRouteIfIndex	1.3.6.1.4.1.6027.3.9.1.5.1.8	InterfaceIndexOrZero	read-only	The ifIndex value that identifies the local interface through which the next hop of this route should be reached. A value of 0 is valid and represents the scenario where no interface is specified.
MAC dellNetInetCidrRouteMacAddress	1.3.6.1.4.1.6027.3.9.1.5.1.9	MacAddress	read-only	The Mac address of the NextHop.
OCT dellNetInetCidrRouteEgressPort	1.3.6.1.4.1.6027.3.9.1.5.1.10	OCTET STRING	read-only	The name of the egress port to which the packets will be forwarded.
U32 dellNetInetCidrRouteCamIndex	1.3.6.1.4.1.6027.3.9.1.5.1.11	Unsigned32	read-only	Cam Entry corresponding to a row.
dellNetIpForwardMibConformance	1.3.6.1.4.1.6027.3.9.2
dellNetIpForwardMibCompliances	1.3.6.1.4.1.6027.3.9.2.1
dellNetIpForwardMibCompliance	1.3.6.1.4.1.6027.3.9.2.1.1			The basic implementation requirements for the Dell Networking OS Ip Forward MIB.
dellNetIpForwardMibGroups	1.3.6.1.4.1.6027.3.9.2.2
dellNetIpForwardObjectGroup	1.3.6.1.4.1.6027.3.9.2.2.1			Objects for the IP aware Route Table.
dellNetIpForwardVariable	1.3.6.1.4.1.6027.3.9.3
I32 chSysCardNumber	1.3.6.1.4.1.6027.3.9.3.1	Integer32	read-only	This is the card number assigned to the line cards and the RPM cards in the chassis. The line cards number are from 0 to 13 and the RPM are from 0 to 1.

RFC description

Manages CIDR multipath IP routing and forwarding table entries for Dell networking switches.

Start monitoring Dell Networking switch/router (forwarding information base) 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-FIB-MIB