CISCO-IETF-IP-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2002-03-04

Category: Cisco Devices, IP and Core Protocols

Description: Cisco implementation of a draft replacement for the IP-MIB, providing extended IP management objects until the IETF standard was finalized.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring CISCO-IETF-IP-MIB with a free 30-day trial of IPNetwork Monitor.

What Is CISCO-IETF-IP-MIB?

CISCO-IETF-IP-MIB is Cisco's implementation of a draft/interim replacement for the standard IETF IP-MIB, providing extended IPv4/IPv6 addressing and interface objects (excluding IP routing table management) pending finalization of the corresponding IETF standard. It exposes IP/ICMP-layer configuration and state: global IPv6 forwarding and default hop-limit settings, per-interface IPv6 attributes (MTU, reassembly size, interface identifier, physical address), and IP address-prefix tables. Its monitoring value lies in interface/protocol status — confirming IPv6 forwarding is enabled where expected, checking effective MTU and reassembly limits per interface, and verifying address/prefix assignment — which helps catch IPv6 connectivity or fragmentation issues. It is explicitly a Cisco stand-in for the IETF's own IP-MIB lineage and is meant to be superseded by/aligned with that standard MIB. It is deployed on Cisco routers and switches running dual-stack or IPv6 configurations, and this CISCO-IETF-IP-MIB reference is useful for engineers auditing IPv6 interface behavior across a fleet.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-IETF-IP-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

Cisco router/switch (IPv6/dual-stack)

Monitoring Examples

An admin can walk cIpv6InterfaceTable and check cIpv6InterfaceEffectiveMtu and cIpv6InterfaceReasmMaxSize per cIpv6InterfaceIfIndex to confirm an interface's IPv6 MTU and fragment-reassembly limits match expectations, catching interfaces where a lower path MTU could cause silent packet loss. cIpv6Forwarding and cIpv6DefaultHopLimit give a quick global check that IPv6 forwarding is enabled and the hop-limit default is as configured. cIpAddressPfxTable lets an operator enumerate configured address prefixes per interface to audit IPv6 addressing consistency across a fleet.

What Can Be Monitored

IPv6 forwarding status
default hop limit
per-interface effective MTU
per-interface reassembly max size
interface identifier/physical address
IP address prefix assignments

Imported Objects

From CISCO-SMI

ciscoExperiment

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero
ifIndex	OBJECT-TYPE

From INET-ADDRESS-MIB

InetAddress
InetAddressPrefixLength
InetAddressType

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

PhysAddress
RowPointer
TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using cInetIcmpInMsgs OID:

Select a Cisco router/switch (IPv6/dual-stack) 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 cInetIcmpInMsgs 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 total number of ICMP messages which the entity received. 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 between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoIetfIpMIB	1.3.6.1.4.1.9.10.86			The MIB module for managing IP and ICMP implementations, but excluding the management of IP routes.
ciscoIetfIpMIBObjects	1.3.6.1.4.1.9.10.86.1
cIp	1.3.6.1.4.1.9.10.86.1.1
cIpAddressPfxTable	1.3.6.1.4.1.9.10.86.1.1.1		not-accessible	Inet prefix table.
cIpAddressPfxEntry	1.3.6.1.4.1.9.10.86.1.1.1.1		not-accessible	Inet prefix entry.
NUM cIpAddressPfxIfIndex	1.3.6.1.4.1.9.10.86.1.1.1.1.1	InterfaceIndex	not-accessible	The interface on which this prefix is configured.
IPt cIpAddressPfxType	1.3.6.1.4.1.9.10.86.1.1.1.1.2	InetAddressType	not-accessible	The address type of cIpAddressPfxPfx. Only IPv4 and IPv6 addresses are expected.
IP cIpAddressPfxPfx	1.3.6.1.4.1.9.10.86.1.1.1.1.3	InetAddress	not-accessible	The address prefix. Bits after cIpAddressPfxLength must be zero.
ADR cIpAddressPfxLength	1.3.6.1.4.1.9.10.86.1.1.1.1.4	InetAddressPrefixLength	not-accessible	The prefix length associated with this prefix.
INT cIpAddressPfxOrigin	1.3.6.1.4.1.9.10.86.1.1.1.1.5	INTEGER	read-only	The origin of this prefix. manual(2) indicates a prefix that was manually configured. wellknown(3) indicates a well-known prefix, e.g. 169.254/16 for IPv4 autoconfiguration or fe80::/10 for IPv6 link-local addresses. dhcp(4) indicates a prefix that was assigned by a DHCP server. routeradv(5) indicates a prefix learned from a router advertisement.
T/F cIpAddressPfxOnLinkFlag	1.3.6.1.4.1.9.10.86.1.1.1.1.6	TruthValue	read-only	This object has the value 'true(1)', if this prefix can be used for on-link determination and the value 'false(2)' otherwise.
T/F cIpAddressPfxAutonomousFlag	1.3.6.1.4.1.9.10.86.1.1.1.1.7	TruthValue	read-only	Autonomous address configuration flag. When true(1), indicates that this prefix can be used for autonomous address configuration (i.e. can be used to form a local interface address). If false(2), it is not used to autoconfigure a local interface address.
U32 cIpAddressPfxAdvPfdLifetime	1.3.6.1.4.1.9.10.86.1.1.1.1.8	Unsigned32	read-only	The length of time in seconds that this prefix will remain preferred, i.e. time until deprecation. A value of 4,294,967,295 represents infinity. The address generated from a deprecated prefix should no longer be used as a source address in new communications, but packets received on such an interface are processed as expected.
U32 cIpAddressPfxAdvValidLifetime	1.3.6.1.4.1.9.10.86.1.1.1.1.9	Unsigned32	read-only	The length of time in seconds that this prefix will remain valid, i.e. time until invalidation. A value of 4,294,967,295 represents infinity. The address generated from an invalidated prefix should not appear as the destination or source address of a packet.
cIpAddressTable	1.3.6.1.4.1.9.10.86.1.1.2		not-accessible	Inet address table.
cIpAddressEntry	1.3.6.1.4.1.9.10.86.1.1.2.1		not-accessible	Inet addr entry.
IPt cIpAddressAddrType	1.3.6.1.4.1.9.10.86.1.1.2.1.1	InetAddressType	not-accessible	The address type of cIpAddressAddr.
IP cIpAddressAddr	1.3.6.1.4.1.9.10.86.1.1.2.1.2	InetAddress	not-accessible	The IP address to which this entry's addressing information pertains.
NUM cIpAddressIfIndex	1.3.6.1.4.1.9.10.86.1.1.2.1.3	InterfaceIndex	read-only	The index value which uniquely identifies the interface to which this entry is applicable. The interface identified by a particular value of this index is the same interface as identified by the same value of the IF-MIB's ifIndex.
INT cIpAddressType	1.3.6.1.4.1.9.10.86.1.1.2.1.4	INTEGER	read-only	The type of address. broadcast(3) is not a valid value for IPv6 addresses.
NUM cIpAddressPrefix	1.3.6.1.4.1.9.10.86.1.1.2.1.5	RowPointer	read-only	A pointer to the row in the prefix table to which this address belongs. May be { 0 0 } if there is no such row.
INT cIpAddressOrigin	1.3.6.1.4.1.9.10.86.1.1.2.1.6	INTEGER	read-only	The origin of the address. manual(2) indicates that the address was manually configured. wellknown(3) indicates an address constructed from a well-known value, e.g. an IANA-assigned anycast address. dhcp(4) indicates an address that was assigned to this system by a DHCP server. linklayer(5) indicates an address created by IPv6 stateless autoconfiguration. random(6) indicates an address chosen by random, e.g. an IPv4 address within 169.254/16, or an RFC 3041 privacy address.
INT cIpAddressStatus	1.3.6.1.4.1.9.10.86.1.1.2.1.7	INTEGER	read-only	Address status. The preferred(1) state indicates that this is a valid address that can appear as the destination or source address of a packet. The deprecated(2) state indicates that this is a valid but deprecated address that should no longer be used as a source address in new communications, but packets addressed to such an address are processed as expected. The invalid(3) state indicates that this is not valid address which should not appear as the destination or source address of a packet. The inaccessible(4) state indicates that the address is not accessible because the interface to which this address is assigned is not operational. The tentative(6) state indicates the uniqueness of the address on the link is being verified. The duplicate(7) state indicates the address has been determined to be non-unique on the link and so must not be used. In the absence of other information, an IPv4 address is always preferred(1).
cInetNetToMediaTable	1.3.6.1.4.1.9.10.86.1.1.3		not-accessible	The IP Address Translation table used for mapping from IP addresses to physical addresses. The Address Translation tables contain the IP address to 'physical' address equivalences. Some interfaces do not use translation tables for determining address equivalences (e.g., DDN-X.25 has an algorithmic method); if all interfaces are of this type, then the Address Translation table is empty, i.e., has zero entries.
cInetNetToMediaEntry	1.3.6.1.4.1.9.10.86.1.1.3.1		not-accessible	Each entry contains one IP address to `physical' address equivalence.
IPt cInetNetToMediaNetAddressType	1.3.6.1.4.1.9.10.86.1.1.3.1.1	InetAddressType	not-accessible	The type of cInetNetToMediaNetAddress.
IP cInetNetToMediaNetAddress	1.3.6.1.4.1.9.10.86.1.1.3.1.2	InetAddress	not-accessible	The IP Address corresponding to the media-dependent `physical' address.
PHY cInetNetToMediaPhysAddress	1.3.6.1.4.1.9.10.86.1.1.3.1.3	PhysAddress	read-create	The media-dependent `physical' address.
TIM cInetNetToMediaLastUpdated	1.3.6.1.4.1.9.10.86.1.1.3.1.4	TimeStamp	read-only	The value of sysUpTime at the time this entry was last updated. If this entry was updated prior to the last re- initialization of the local network management subsystem, then this object contains a zero value.
INT cInetNetToMediaType	1.3.6.1.4.1.9.10.86.1.1.3.1.5	INTEGER	read-create	The type of mapping. Setting this object to the value invalid(2) has the effect of invalidating the corresponding entry in the cInetNetToMediaTable. That is, it effectively disassociates the interface identified with said entry from the mapping identified with said entry. It is an implementation-specific matter as to whether the agent removes an invalidated entry from the table. Accordingly, management stations must be prepared to receive tabular information from agents that corresponds to entries not currently in use. Proper interpretation of such entries requires examination of the relevant cInetNetToMediaType object. The 'dynamic(3)' type indicates that the IP address to physical addresses mapping has been dynamically resolved using e.g. IPv4 ARP or the IPv6 Neighbor Discovery protocol. The 'static(4)' type indicates that the mapping has been statically configured. The 'local(5)' type indicates that the mapping is provided for an entity's own interface address.
INT cInetNetToMediaState	1.3.6.1.4.1.9.10.86.1.1.3.1.6	INTEGER	read-only	The Neighbor Unreachability Detection [3] state for the interface when the address mapping in this entry is used. If Neighbor Unreachability Detection is not in use (e.g. for IPv4), this object is always unknown(6).
cIpv6ScopeIdTable	1.3.6.1.4.1.9.10.86.1.1.4		not-accessible	The table used to describe IPv6 unicast and multicast scope zones.
cIpv6ScopeIdEntry	1.3.6.1.4.1.9.10.86.1.1.4.1		not-accessible	Each entry contains the list of scope identifiers on a given interface.
NUM cIpv6ScopeIdIfIndex	1.3.6.1.4.1.9.10.86.1.1.4.1.1	InterfaceIndex	not-accessible	The interface to which these scopes belong.
SCO cIpv6ScopeIdLinkLocal	1.3.6.1.4.1.9.10.86.1.1.4.1.2	ScopeId	read-only	The Scope Identifier for the link-local scope on this interface.
SCO cIpv6ScopeIdSubnetLocal	1.3.6.1.4.1.9.10.86.1.1.4.1.3	ScopeId	read-only	The Scope Identifier for the subnet-local scope on this interface.
SCO cIpv6ScopeIdAdminLocal	1.3.6.1.4.1.9.10.86.1.1.4.1.4	ScopeId	read-only	The Scope Identifier for the admin-local scope on this interface.
SCO cIpv6ScopeIdSiteLocal	1.3.6.1.4.1.9.10.86.1.1.4.1.5	ScopeId	read-only	The Scope Identifier for the site-local scope on this interface.
SCO cIpv6ScopeId6	1.3.6.1.4.1.9.10.86.1.1.4.1.6	ScopeId	read-only	The Scope Identifier for scope 6 on this interface.
SCO cIpv6ScopeId7	1.3.6.1.4.1.9.10.86.1.1.4.1.7	ScopeId	read-only	The Scope Identifier for scope 7 on this interface.
SCO cIpv6ScopeIdOrganizationLocal	1.3.6.1.4.1.9.10.86.1.1.4.1.8	ScopeId	read-only	The Scope Identifier for the orgainzation-local scope on this interface.
SCO cIpv6ScopeId9	1.3.6.1.4.1.9.10.86.1.1.4.1.9	ScopeId	read-only	The Scope Identifier for scope 9 on this interface.
SCO cIpv6ScopeIdA	1.3.6.1.4.1.9.10.86.1.1.4.1.10	ScopeId	read-only	The Scope Identifier for scope A on this interface.
SCO cIpv6ScopeIdB	1.3.6.1.4.1.9.10.86.1.1.4.1.11	ScopeId	read-only	The Scope Identifier for scope B on this interface.
SCO cIpv6ScopeIdC	1.3.6.1.4.1.9.10.86.1.1.4.1.12	ScopeId	read-only	The Scope Identifier for scope C on this interface.
SCO cIpv6ScopeIdD	1.3.6.1.4.1.9.10.86.1.1.4.1.13	ScopeId	read-only	The Scope Identifier for scope D on this interface.
cIpv6	1.3.6.1.4.1.9.10.86.1.2
INT cIpv6Forwarding	1.3.6.1.4.1.9.10.86.1.2.1	INTEGER	read-write	The indication of whether this entity is acting as an IPv6 router in respect to the forwarding of datagrams received by, but not addressed to, this entity. IPv6 routers forward datagrams. IPv6 hosts do not (except those source-routed via the host).
INT cIpv6DefaultHopLimit	1.3.6.1.4.1.9.10.86.1.2.2	INTEGER	read-write	The default value inserted into the Hop Limit field of the IPv6 header of datagrams originated at this entity, whenever a Hop Limit value is not supplied by the transport layer protocol.
cIpv6InterfaceTable	1.3.6.1.4.1.9.10.86.1.2.3		not-accessible	The table containing per-interface IPv6-specific information.
cIpv6InterfaceEntry	1.3.6.1.4.1.9.10.86.1.2.3.1		not-accessible	An entry containing IPv6-specific information for a given interface.
NUM cIpv6InterfaceIfIndex	1.3.6.1.4.1.9.10.86.1.2.3.1.1	InterfaceIndex	not-accessible	The interface for which this row contains IPv6-specific information.
U32 cIpv6InterfaceEffectiveMtu	1.3.6.1.4.1.9.10.86.1.2.3.1.2	Unsigned32	read-only	The size of the largest IPv6 packet which can be sent/received on the interface, specified in octets.
U32 cIpv6InterfaceReasmMaxSize	1.3.6.1.4.1.9.10.86.1.2.3.1.3	Unsigned32	read-only	The size of the largest IPv6 datagram which this entity can re-assemble from incoming IPv6 fragmented datagrams received on this interface.
OID cIpv6InterfaceIdentifier	1.3.6.1.4.1.9.10.86.1.2.3.1.4	Ipv6AddrIfIdentifier	read-write	The Interface Identifier for this interface that is (at least) unique on the link this interface is attached to. The Interface Identifier is combined with an address prefix to form an interface address. By default, the Interface Identifier is autoconfigured according to the rules of the link type this interface is attached to.
INT cIpv6InterfaceIdentifierLength	1.3.6.1.4.1.9.10.86.1.2.3.1.5	INTEGER	read-write	The length of the Interface Identifier in bits.
PHY cIpv6InterfacePhysicalAddress	1.3.6.1.4.1.9.10.86.1.2.3.1.6	PhysAddress	read-only	The interface's physical address. For example, for an IPv6 interface attached to an 802.x link, this object normally contains a MAC address. Note that in some cases this address may differ from the address of the interface's protocol sub-layer. The interface's media-specific MIB must define the bit and byte ordering and the format of the value of this object. For interfaces which do not have such an address (e.g., a serial line), this object should contain an octet string of zero length.
cIcmp	1.3.6.1.4.1.9.10.86.1.3
cInetIcmpTable	1.3.6.1.4.1.9.10.86.1.3.1		not-accessible	The table of generic ICMP counters. These counters may be kept per-interface and/or system-wide.
cInetIcmpEntry	1.3.6.1.4.1.9.10.86.1.3.1.1		not-accessible	A conceptual row in the inetIcmpTable. A row with an inetIcmpIfIndex value of zero indicates a system-wide value; a row with a non-zero inetIcmpIfIndex indicates an interface-specific value. A system may provide both system-wide and interface-specific values, in which case it is important to note that the system-wide value may not be equal to the sum of the interface-specific value across all interfaces due to e.g. dynamic interface creation/deletion.
IPt cInetIcmpAFType	1.3.6.1.4.1.9.10.86.1.3.1.1.1	InetAddressType	not-accessible	The IP address family of the statistics.
NUM cInetIcmpIfIndex	1.3.6.1.4.1.9.10.86.1.3.1.1.2	InterfaceIndexOrZero	not-accessible	The ifindex of the interface, or zero for system-wide stats.
C32 cInetIcmpInMsgsEx	1.3.6.1.4.1.9.10.86.1.3.1.1.3	Counter32	read-only	The total number of ICMP messages which the entity received. Note that this counter includes all those counted by cInetIcmpInErrors.
C32 cInetIcmpInErrors	1.3.6.1.4.1.9.10.86.1.3.1.1.4	Counter32	read-only	The number of ICMP messages which the entity received but determined as having ICMP-specific errors (bad ICMP checksums, bad length, etc.).
C32 cInetIcmpOutMsgs	1.3.6.1.4.1.9.10.86.1.3.1.1.5	Counter32	read-only	The total number of ICMP messages which the entity received. Note that this counter includes all those counted by inetIcmpOutErrors.
C32 cInetIcmpOutErrors	1.3.6.1.4.1.9.10.86.1.3.1.1.6	Counter32	read-only	The number of ICMP messages which this entity did not send due to problems discovered within ICMP such as a lack of buffers. This value should not include errors discovered outside the ICMP layer such as the inability of IP to route the resultant datagram. In some implementations there may be no types of error which contribute to this counter's value.
cInetIcmpMsgTable	1.3.6.1.4.1.9.10.86.1.3.2		not-accessible	The table of per-message ICMP counters. These counters may be kept per-interface and/or system-wide.
cInetIcmpMsgEntry	1.3.6.1.4.1.9.10.86.1.3.2.1		not-accessible	A conceptual row in the inetIcmpMsgTable. A row with an inetIcmpMsgIfIndex value of zero indicates a system-wide value; a row with a non-zero cInetIcmpMsgIfIndex indicates an interface-specific value. A system may provide both system-wide and interface-specific values, in which case it is important to note that the system-wide value may not be equal to the sum of the interface-specific values across all interfaces due to e.g. dynamic interface creation/deletion. If the system keeps track of individual ICMP code values (e.g. destination unreachable, code administratively prohibited), it creates several rows for each inetIcmpMsgType, each with an appropriate value of cInetIcmpMsgCode. A row with the special value of cInetIcmpMsgCode, 256, counts all packets with type cInetIcmpMsgType that aren't counted in rows with a value of cInetIcmpMsgCode other than 256.
IPt cInetIcmpMsgAFType	1.3.6.1.4.1.9.10.86.1.3.2.1.1	InetAddressType	not-accessible	The IP address family of the statistics.
NUM cInetIcmpMsgIfIndex	1.3.6.1.4.1.9.10.86.1.3.2.1.2	InterfaceIndexOrZero	not-accessible	The ifindex of the interface, or zero for system-wide stats.
I32 cInetIcmpMsgType	1.3.6.1.4.1.9.10.86.1.3.2.1.3	Integer32	not-accessible	The ICMP type field of the message type being counted by this row.
I32 cInetIcmpMsgCode	1.3.6.1.4.1.9.10.86.1.3.2.1.4	Integer32	not-accessible	The ICMP code field of the message type being counted by this row, or the special value 256 if no specific ICMP code is counted by this row.
C32 cInetIcmpMsgInPkts	1.3.6.1.4.1.9.10.86.1.3.2.1.5	Counter32	read-only	The number of input packets for this AF, ifindex, type, code.
C32 cInetIcmpMsgOutPkts	1.3.6.1.4.1.9.10.86.1.3.2.1.6	Counter32	read-only	The number of output packets for this AF, ifindex, type, code.
ciscoIpMIBConformance	1.3.6.1.4.1.9.10.86.2
ciscoIpMIBCompliances	1.3.6.1.4.1.9.10.86.2.1
ciscoIpMIBCompliance	1.3.6.1.4.1.9.10.86.2.1.1			The compliance statement for systems which implement IPv6 OR IPv4.
ciscoIpMIBGroups	1.3.6.1.4.1.9.10.86.2.2
ciscoIpAddressPfxGroup	1.3.6.1.4.1.9.10.86.2.2.1			The ip version independent address prefix group of entries providing for basic management of IP prefixes.
ciscoIpAddressGroup	1.3.6.1.4.1.9.10.86.2.2.2			The ip version independent address group of entries providing for basic management of IP addresses.
ciscoInetNetToMediaGroup	1.3.6.1.4.1.9.10.86.2.2.3			The group of entries providing IP address to physical address mapping.
ciscoInetIcmpGroup	1.3.6.1.4.1.9.10.86.2.2.4			The group of entries providing version independent per-interface ICMP specific counters.
ciscoInetIcmpMsgGroup	1.3.6.1.4.1.9.10.86.2.2.5			The group of entries providing version independent per-interface ICMP msg type specific counters.
ciscoIpv6GeneralGroup	1.3.6.1.4.1.9.10.86.2.2.6			The IPv6 group of objects providing for basic management of IPv6 entities.
ciscoIpv6InterfaceGroup	1.3.6.1.4.1.9.10.86.2.2.7			The IPv6 group of objects providing IPv6 interface specific statistics.
ciscoIpv6ScopeGroup	1.3.6.1.4.1.9.10.86.2.2.8			The group of objects for managing IPv6 scope zones.

RFC description

Cisco IP and ICMP protocol management for IPv4 and IPv6 implementations.

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