ZHONE-COM-IP-ROUTE-MIB

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Organization: Zhone Technologies, Inc.

Last Updated: 2000-09-11

Category: Zhone Technologies CPE and Access

Description: Monitors Zhone Technologies IP routing table entries, next-hop configuration, and route metric values.

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What Is ZHONE-COM-IP-ROUTE-MIB?

ZHONE-COM-IP-ROUTE-MIB is a Zhone Technologies vendor MIB implementing a CIDR IP routing table modeled on RFC 2096, extended to support multiple routing domains via augmentation of ZHONE-COM-IP-RD-MIB's rdTable. zhoneRouteInfoTable, which AUGMENTS rdEntry, exposes zhIpCidrRouteNumber, the count of valid routes per routing domain, while zhoneIpCidrRouteTable — indexed by rdIndex, zhIpCidrRouteDest, zhIpCidrRouteMask, and zhIpCidrRouteNextHop — holds each route's next-hop interface (zhIpCidrRouteIfIndex), route type/protocol (zhIpCidrRouteType, zhIpCidrRouteProto covering RIP/IS-IS/OSPF/BGP/ICMP-redirect/static), age since last update (zhIpCidrRouteAge), and up to five protocol-specific metrics (zhIpCidrRouteMetric1-5). This gives an operator visibility into the live forwarding table per routing domain — which routes exist, how they were learned, and how fresh they are — useful for diagnosing routing black holes or unexpected next-hop changes. It depends on ZHONE-COM-IP-RD-MIB for routing-domain indexing and IF-MIB's InterfaceIndexOrZero for next-hop interface identification, and is deployed on Zhone access/routing platforms; network engineers can complete a ZHONE-COM-IP-ROUTE-MIB download for use when managing these devices.

IPNetwork Monitor allows you to monitor SNMP objects defined in ZHONE-COM-IP-ROUTE-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

Zhone Technologies access/routing platforms

Monitoring Examples

An operator polls zhoneIpCidrRouteTable for a specific routing domain to check zhIpCidrRouteNextHop and zhIpCidrRouteIfIndex for a destination prefix, cross-referencing zhIpCidrRouteAge; an unexpectedly high age combined with a zhIpCidrRouteType of reject would indicate a stale or broken route causing traffic to be discarded.

What Can Be Monitored

per-routing-domain CIDR route table entries
route destination/mask/next-hop
route type and learning protocol
route age since last update
up to five protocol-specific route metrics

Imported Objects

From IF-MIB

InterfaceIndexOrZero

From SNMPv2-SMI

Gauge32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE
Unsigned32

From Zhone

zhoneIp	OBJECT-IDENTITY
zhoneModules	OBJECT-IDENTITY

From ZHONE-COM-IP-RD-MIB

rdEntry	OBJECT-TYPE
rdIndex	OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
route	1.3.6.1.4.1.5504.4.1.7			CIDR Routing Table information based on RFC 2096. Modified to incorporate routing domains.
zhoneRouteInfoTable	1.3.6.1.4.1.5504.4.1.7.1		not-accessible	Table of scalar objects from RFC 2096 that now need to be indexed by routing domain. This table augments the rdTable from ZHONE-COM-IP-RD-MIB.
zhoneRouteInfoEntry	1.3.6.1.4.1.5504.4.1.7.1.1		not-accessible	Set of general routing information for one routing domain.
G32 zhIpCidrRouteNumber	1.3.6.1.4.1.5504.4.1.7.1.1.1	Gauge32	read-only	The number of current ipCidrRouteTable entries in this routing domain that are not invalid.
zhoneIpCidrRouteTable	1.3.6.1.4.1.5504.4.1.7.3		not-accessible	This entity's IP Routing table for each routing domain.
zhoneIpCidrRouteEntry	1.3.6.1.4.1.5504.4.1.7.3.1		not-accessible	A particular route to a particular destina- tion, under a particular policy. There is a separate routing table for each routing domain. Rows can be added or removed using the zhIpCidrRouteStatus object. The minimum columns required to create new entry are zhIpCidrRouteDest, zhIpCidrRouteMask, zhIpCidrRouteNextHop, zhIpCidrRouteType, and zhIpCidrRouteInfo.
IP zhIpCidrRouteDest	1.3.6.1.4.1.5504.4.1.7.3.1.1	IpAddress	not-accessible	The destination IP address of this route. This object may not take a Multicast (Class D) address value. Any assignment (implicit or otherwise) of an instance of this object to a value x must be rejected if the bitwise logical-AND of x with the value of the corresponding instance of the ipCidrRouteMask object is not equal to x.
IP zhIpCidrRouteMask	1.3.6.1.4.1.5504.4.1.7.3.1.2	IpAddress	not-accessible	Indicate the mask to be logical-ANDed with the destination address before being compared to the value in the ipCidrRouteDest field. For those systems that do not support arbitrary subnet masks, an agent constructs the value of the ipCidrRouteMask by reference to the IP Ad- dress Class. Any assignment (implicit or otherwise) of an instance of this object to a value x must be rejected if the bitwise logical-AND of x with the value of the corresponding instance of the ipCidrRouteDest object is not equal to ipCidrRoute- Dest.
IP zhIpCidrRouteNextHop	1.3.6.1.4.1.5504.4.1.7.3.1.3	IpAddress	not-accessible	On remote routes, the address of the next sys- tem en route; Otherwise, 0.0.0.0.
NUM zhIpCidrRouteIfIndex	1.3.6.1.4.1.5504.4.1.7.3.1.4	InterfaceIndexOrZero	read-write	The ifIndex value which identifies the local interface through which the next hop of this route should be reached. A value of 0 means there is no next hop interface.
INT zhIpCidrRouteType	1.3.6.1.4.1.5504.4.1.7.3.1.5	INTEGER	read-write	The type of route. Note that local(3) refers to a route for which the next hop is the final destination; remote(4) refers to a route for which the next hop is not the final destina- tion. Routes which do not result in traffic forwarding or rejection should not be displayed even if the implementation keeps them stored internally. reject (2) refers to a route which, if matched, discards the message as unreachable. This is used in some protocols as a means of correctly aggregating routes.
INT zhIpCidrRouteProto	1.3.6.1.4.1.5504.4.1.7.3.1.6	INTEGER	read-only	The routing mechanism via which this route was learned. Inclusion of values for gateway rout- ing protocols is not intended to imply that hosts should support those protocols. other -- not specified local -- local interface netmgmt -- static route icmp -- result of ICMP Redirect The following are all dynamic routing protocols rip -- Berkeley RIP or RIP-II isIs -- Dual IS-IS ospf -- Open Shortest Path First bgp -- Border Gateway Protocol idpr -- InterDomain Policy Routing
U32 zhIpCidrRouteAge	1.3.6.1.4.1.5504.4.1.7.3.1.7	Unsigned32	read-only	The number of seconds since this route was last updated or otherwise determined to be correct. Note that no semantics of `too old' can be implied except through knowledge of the routing protocol by which the route was learned.
OID zhIpCidrRouteInfo	1.3.6.1.4.1.5504.4.1.7.3.1.8	OBJECT IDENTIFIER	read-write	A reference to MIB definitions specific to the particular routing protocol which is responsi- ble for this route, as determined by the value specified in the route's ipCidrRouteProto value. If this information is not present, its value should be set to the OBJECT IDENTIFIER { 0 0 }, which is a syntactically valid object identif- ier, and any implementation conforming to ASN.1 and the Basic Encoding Rules must be able to generate and recognize this value.
I32 zhIpCidrRouteNextHopAS	1.3.6.1.4.1.5504.4.1.7.3.1.9	Integer32	read-write	The Autonomous System Number of the Next Hop. The semantics of this object are determined by the routing-protocol specified in the route's ipCidrRouteProto value. When this object is unknown or not relevant its value should be set to zero.
I32 zhIpCidrRouteMetric1	1.3.6.1.4.1.5504.4.1.7.3.1.10	Integer32	read-write	The primary routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipCidrRouteProto value. If this metric is not used, its value should be set to -1.
I32 zhIpCidrRouteMetric2	1.3.6.1.4.1.5504.4.1.7.3.1.11	Integer32	read-write	An alternate routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipCidrRouteProto value. If this metric is not used, its value should be set to -1.
I32 zhIpCidrRouteMetric3	1.3.6.1.4.1.5504.4.1.7.3.1.12	Integer32	read-write	An alternate routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipCidrRouteProto value. If this metric is not used, its value should be set to -1.
I32 zhIpCidrRouteMetric4	1.3.6.1.4.1.5504.4.1.7.3.1.13	Integer32	read-write	An alternate routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipCidrRouteProto value. If this metric is not used, its value should be set to -1.
I32 zhIpCidrRouteMetric5	1.3.6.1.4.1.5504.4.1.7.3.1.14	Integer32	read-write	An alternate routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipCidrRouteProto value. If this metric is not used, its value should be set to -1.
comIpRoute	1.3.6.1.4.1.5504.6.57			Zhone CIDR Route MIB Module. IP Software Minneapolis, MN

RFC description

Manages CIDR routing information with support for routing domains on Zhone equipment.

Start monitoring Zhone Technologies access/routing platforms (per-routing-domain CIDR forwarding-table 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.

Download ZHONE-COM-IP-ROUTE-MIB

What Is ZHONE-COM-IP-ROUTE-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description