Help for MVS Stack Interface Data Summary
This help page explains the display of the detailed information about the selected interface. Some data fields may be changed by overtyping the data with non-blank characters.
This page also displays statistical information about the selected interface. Statistics collected include traffic and errors for this interface.
Counters are shown with the associated MIB object. These are known as standard capacity objects. High capacity also exists for most objects. The difference is the size of the counters and the amount of data they can hold. The high capacity MIB objects are identified in the description of the object.
If high capacity is available for the interface, the more accurate high capacity data will be used. The TRAFFIC header line will include the term High Capacity when it is being used. Percentages displayed show the percentage of a specific category of traffic (IN or OUT) as part of the total traffic (IN or OUT) for the interface.
Interface Details for
This is the interface details for the IP address displayed.
Interface Name
The textual name of the interface. The value of this object should be the name of the interface as assigned by the local device and should be suitable for use in commands entered at the console of the device. This can be a text name, such as `le0' or a simple port number, such as `1', depending on the interface naming syntax of the device. If several entries in the ifTable together represent a single interface as named by the device, then each will have the same value of interface name. Note that for an agent which responds to SNMP queries concerning an interface on some other (proxied) device, then the interface name value for such an interface is the local name for the proxied device. If there is no local name, or this object is otherwise not applicable, then this object contains a null value.
IP Address
This is the IP address that is associated with the interface name.
Device Base Number
If this entry is for a CTC, HCH, or Vipa device, then this object represents its base device number. For an LCS device, this object represents the lcs address. For a device, this object represents the device number. A value of 0 implies that this object is not valid for the associating device table entry.
on Interface Number
This is a pointer to the interface where the physical device base exists. For a device type interface, this is the DeviceBaseNumber object. For a link type interface, the LinkDeviceIndex points to this interface.
Description
A textual string containing information about the interface. This string should include the name of the manufacturer, the product name, and the version of the interface hardware/software.
Desired Status
The desired state of the interface. The value of the desired state can be active, down, or test. The testing state indicates that no operational packets can be passed. When a managed system initializes, all interfaces start with ifAdminStatus in the down state. As a result of either explicit management action or per configuration information retained by the managed system, ifAdminStatus may then change to active or test. Click on the drop-down list to select another status.
Actual Status
The current operational state of the interface. The testing state indicates that no operational packets can be passed. If ifAdminStatus is down, then ifOperStatus should also be down. If ifAdminStatus is changed to active, then ifOperStatus should also change to active if the interface is ready to transmit and receive network traffic. It should change to dormant if the interface is waiting for external actions (such as a serial line waiting for an incoming connection). It should remain in the down state if there is a fault that prevents it from changing to active. It should remain in the not present state if the interface has missing components (typically, hardware). Click on the drop-down list to select another status. This value can be one of the following:
The interface is up and ready to pass packets. | |
The interface is down. | |
The interface is in some test mode. | |
The interface status cannot be determined. | |
The interface is dormant. | |
A component for the interface is missing. | |
The interface is down due to state of a lower-layer interface or interfaces. |
Interface Type
The type of interface assigned by the Internet Assigned Numbers Authority (IANA) through updating the syntax of the IANAifType textual convention. See the IANAifType MIB for a current list of types.
Link Type
The type defined for this device/link. The value can be one of the following: unknown(0), lcs(1), ctc(2), claw(3), cdlc(4), atm(5), x25npsi(6), vipa(7), loopback(8), hch(9), ethernet(10), t8023(11), etheror8023(12), ibmtr(13), fddi(14), ip(15), iucv(16), stack(17), mpcptp(18), snalu0(19), snalu62(20), mpcipa(21), ipaqenet(22), ipaqgnet(23), mpcosa(24), osafddi(25), or osaenet(26).
IF Specific
A reference to MIB definitions specific to the particular media being used to realize the interface. It is recommended that this value point to an instance of a MIB object in the media-specific MIB. For example, the object should have the semantics associated with the InstancePointer textual convention defined in RFC 1903. It is recommended that the media-specific MIB specify what value the interface specific should take for values of interface type. If no MIB definitions specific to the particular media are available, the value should be set to the OBJECT IDENTIFIER { 0 0 }.
Max Datagram Size
The size of the largest packet which can be sent or received on the interface, specified in octets. For interfaces that are used for transmitting network datagrams, this is the size of the largest network datagram that can be sent on the interface.
Interface Speed
An estimate of the current bandwidth of the interface in bits per second. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth. If the bandwidth of the interface is greater than the maximum value reportable by this object, then this object should report its maximum value (4,294,967,295) and ifHighSpeed must be used to report the speed of the interface. For a sub-layer which has no concept of bandwidth, this object should be zero.
Last Status Change
The value of sysUpTime at the time the interface entered its current operational state. The value is zero if the current state was entered prior to the last re-initialization of the local network management subsystem.
TCP Connections
This is a count of all TCP connection state entries which have this IP address as the local host address. A value of N/A means that no connections were found. This field will not be displayed if the interface does not have a gateway.
Network Mask
The subnet mask associated with the IP address of this entry. The value of the mask is an IP address with the network bits set to 1 and all hosts bits set to 0. This field will not be displayed if the interface does not have a gateway.
Reassemble Max Size
The size of the largest IP datagram which this entity can re-assemble from incoming IP fragmented datagrams received on this interface. This field will not be displayed if the interface does not have a gateway.
Connector Present
This object has a value of true if the interface sublayer has a physical connector. Otherwise the value is false.
Link Traps Enabled
Indicates whether linkUp/linkDown traps should be generated for this interface. This value can be enabled or disabled. By default, this object should have the value enabled for interfaces which do not operate on 'top' of any other interface (as defined in the ifStackTable), and disabled otherwise. Click on the drop-down list to change this value.
High Speed
An estimate of the current bandwidth of the interface is in units of 1,000,000 bits per second. If this object reports a value of `n', then the speed of the interface is somewhere in the range of `n-500,000' to `n+499,999'. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth. For a sub-layer which has no concept of bandwidth, this object should be zero.
Accept Any Packets
Accept Any Packets can have a value of true or false. This object has a value of false(2) if this interface only accepts packets/frames that are addressed to this station. This object has a value of true(1) when the station accepts all packets/frames transmitted on the media. The value of true is only legal on certain types of media. If legal, setting this object to a value of true may require the interface to be reset before becoming effective. The value of ifPromiscuousMode does not affect the reception of broadcast and multicast packets/frames by the interface. Click on the drop-down list to change this value.
Traffic | % | In | % | Out |
---|---|---|---|---|
Octets | NA | The total number of octets received on the interface, including framing characters. | NA | The total number of octets transmitted out of the interface, including framing characters. |
Total Packets | NA | The total of all of traffic on the interface. This includes unicast traffic, not unicast traffic including multi and broadcast traffic, and all error traffic. | NA | The total of all of traffic out of the interface. This includes unicast traffic, non unicast traffic including multi and broadcast traffic, and all error traffic. |
Unicast Packets | Percentage of the unicast packets in as part of the total traffic in for the interface. | The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were not addressed to a multicast or broadcast address at this sub-layer. | Percentage of the unicast packets out as part of the total traffic out for the interface. | The total number of packets that higher-level protocols requested be transmitted, and which were not addressed to a multicast or broadcast address at this sub-layer, including those that were discarded or not sent. |
Non-Unicast Packets | Percentage of the non-unicast packets in as part of the total traffic in for the interface. | The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were addressed to a multicast or broadcast address at this sub-layer. | Percentage of the octets out as part of the total traffic out for the interface. | The total number of packets that higher-level protocols requested be transmitted, and which were addressed to a multicast or broadcast address at this sub-layer, including those that were discarded or not sent. |
Multicast Packets | Percentage of the multicast packets in as part of the total traffic in for the interface. | The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were addressed to a multicast address at this sub-layer. For a MAC layer protocol, this includes both Group and Functional protocol, this includes both Group and Functional addresses. | Percentage of the multicast packets out as part of the total traffic out for the interface. | The total number of packets that higher-level protocols requested be transmitted, and which were addressed to a multicast address at this sub-layer, including those that were discarded or not sent. For a MAC layer protocol, this includes both Group and Functional addresses. |
Broadcast Packets | Percentage of the broadcast packets in as part of the total traffic in for the interface. | The total number of packets that higher-level protocols requested be transmitted, and which were addressed to a multicast address at this sub-layer, including those that were discarded or not sent. For including those that were discarded or not sent. For a MAC layer protocol, this includes both Group and Functional addresses. | Percentage of the broadcast packets out as part of the total traffic out for the interface. | The total number of packets that higher-level protocols requested be transmitted, and which were addressed to a broadcast address at this sub-layer, including those that were discarded or not sent. |
Discards Received | Percentage of the discards received in as part of the total traffic in for the interface. | The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space. | Percentage of the discards received out as part of the total traffic out for the interface. | The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a packet could be to free up buffer space. |
Errors Received | Percentage of the errors received in as part of the total traffic in for the interface. | For packet-oriented interfaces, the number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. For character-oriented or fixed-length interfaces, the number of inbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. | Percentage of the errors received out as part of the total traffic out for the interface. | For packet-oriented interfaces, the number of outbound packets that could not be transmitted because of errors. For character-oriented or fixed-length interfaces, the number of outbound transmission units that could not be transmitted because of errors. |
Unknown Protocols | Percentage of the unknown protocols in as part of the total traffic in for the interface. | For packet-oriented interfaces, the number of packets received via the interface which were discarded because of an unknown or unsupported protocol. For character-oriented or fixed-length interfaces that support protocol multiplexing the number of transmission units received via the interface which were discarded because of an unknown or unsupported protocol. For any interface that does not support protocol multiplexing, this counter will always be 0. | NA | NA |
Queue Length | NA | NA | NA | The length of the output packet queue (in packets). |
Community Name
The community name field allows you to enter a write password for this resource to enable you to set an object using the SNMP Set command. The name entered will not be displayed on the screen.
View Connection List
Click on the View Connection List button to show the connections active on this interface. If the interface does not have a gateway this button will not be displayed.
Update Selected Items
Click on the Update Selected Items button to accept the changes made to the data fields.
View Gateway List
Click on the View Gateway List button to view gateway information about this interface. This button will not be displayed if the interface does not have a gateway.