CISCO-MGX82XX-RPM-SUBIF-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2002-09-08

Category: ATM, Cisco Devices, Hardware and Environment

Description: Configures RPM subinterfaces and reports their statistics on Cisco MGX 8200 series WAN switching platforms.

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What Is CISCO-MGX82XX-RPM-SUBIF-MIB?

CISCO-MGX82XX-RPM-SUBIF-MIB manages backplane sub-interfaces on the Route Processor Module (RPM) of Cisco MGX 8200-series WAN switches, where the RPM runs Cisco IOS. It exposes provisioning and state data for RPM ports and sub-interfaces, including slot number, interface/sub-interface identifiers, IP addressing, and administrative row status. Its monitoring focus is on software/configuration-level interface status: verifying that a sub-interface is provisioned, in the correct operational state, and carrying the expected IP address and subnet mask, which helps detect misconfigured or inactive routing sub-interfaces. It is used together with the standard Interfaces MIB and depends on the RPM being correctly slotted and recognized by the MGX chassis. Typical deployment is legacy Cisco MGX 8200 WAN switching platforms combining ATM/frame-relay switching with IOS-based routing via the RPM card, and administrators can download the CISCO-MGX82XX-RPM-SUBIF-MIB file to load it into their MIB browser for this purpose.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-MGX82XX-RPM-SUBIF-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 MGX 8200 WAN switch (Route Processor Module / RPM)

Monitoring Examples

An administrator would poll rpmPortTable entries (rpmPortSlotNum, rpmPortInterface, rpmPortSubInterface) to inventory which backplane sub-interfaces are configured on a given RPM card. rpmPortIpAddress and rpmPortSubNetMask reveal the IP addressing assigned to each sub-interface, useful for verifying against expected network design. rpmPortState and rpmPortRowStatus would show an unexpected down or notInService sub-interface, indicating a provisioning or connectivity problem on the RPM.

What Can Be Monitored

sub-interface provisioning status
sub-interface IP address and subnet mask
sub-interface operational state
row status of RPM ports

Imported Objects

From BASIS-MIB

rpmPort

OBJECT-IDENTITY

From CISCOWAN-SMI

ciscoWan

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using rpmPortState OID:

Select a Cisco MGX 8200 WAN switch (Route Processor Module, legacy) 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 rpmPortState 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. This indicates the state of this sub-interface. notConfigured(1) : Sub-interface is not configured. active(2) : Sub-interface is in active state. failed(3) : Sub-interface is in failed state. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value is anything other than 'active', since that indicates the condition this object reports has changed to one worth investigating. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoMgx82xxRpmSubIfMIB	1.3.6.1.4.1.351.150.60			This MIB is used to provision backplane sub-interfaces on the MGX's Route Processor Module (RPM). This MIB is implemented on the MGX controller to manage the RPM. The RPM family of Router Modules run the IOS Operating System
cmrSubIfMIBCompliance	1.3.6.1.4.1.351.150.60.2.1.1			The compliance statement for the Cisco MGX RPM sub-interface MIB.
cmrSubIfMIBCompliances	1.3.6.1.4.1.351.150.60.2.1
cmrSubIfMIBConformance	1.3.6.1.4.1.351.150.60.2
cmrSubIfMIBGroup	1.3.6.1.4.1.351.150.60.2.2.1			Objects related to ATM Subinterface in RPM module.
cmrSubIfMIBGroups	1.3.6.1.4.1.351.150.60.2.2
rpmPortEntry	1.3.6.1.4.1.351.110.5.2.9.1.1.1		not-accessible	An entry for the RPM backplane sub interface. Each entry contains RPM's backplane sub interface number, its IP address and ATM address.
I32 rpmPortInterface	1.3.6.1.4.1.351.110.5.2.9.1.1.1.2	Integer32	read-only	This is the RPM's backplane interface. Currently there is only one interface and hence only supported value is 1.
IP rpmPortIpAddress	1.3.6.1.4.1.351.110.5.2.9.1.1.1.5	IpAddress	read-only	IP address configured on the sub-interface.
INT rpmPortRowStatus	1.3.6.1.4.1.351.110.5.2.9.1.1.1.4	INTEGER	read-only	This indicates the status of this subinterface. add(1) : sub-interface is added. del(2) : sub-interface is deleted. mod(3) : Set to this value before modifying objects related to Subinterfaces.
I32 rpmPortSlotNum	1.3.6.1.4.1.351.110.5.2.9.1.1.1.1	Integer32	read-only	This object specifies the the slot number of the RPM card in MGX shelf.
INT rpmPortStateEx	1.3.6.1.4.1.351.110.5.2.9.1.1.1.7	INTEGER	read-only	This indicates the state of this sub-interface. notConfigured(1) : Sub-interface is not configured. active(2) : Sub-interface is in active state. failed(3) : Sub-interface is in failed state.
I32 rpmPortSubInterface	1.3.6.1.4.1.351.110.5.2.9.1.1.1.3	Integer32	read-only	This object identifies the sub-interface number. The value 0 is for the sub-interface on the main interface(rpmPortInterface).
IP rpmPortSubNetMask	1.3.6.1.4.1.351.110.5.2.9.1.1.1.6	IpAddress	read-only	The subnet mask configured on the sub-interface.
rpmPortTable	1.3.6.1.4.1.351.110.5.2.9.1.1		not-accessible	This table contains information on subinterfaces configured on RPM back plane interface.

RFC description

Manages RPM subinterface configuration and statistics on Cisco MGX 8200 series WAN switching platforms.

Start monitoring Cisco MGX 8200 WAN switch (Route Processor Module, legacy) 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 CISCO-MGX82XX-RPM-SUBIF-MIB