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MIB Reference

AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009

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udpEndpointTable

udpEndpointTable

A table containing information about this entity's UDP endpoints on which a local application is currently accepting or sending datagrams.

The address type in this table represents the address type used for the communication, irrespective of the higher-layer abstraction. For example, an application using IPv6 'sockets' to communicate via IPv4 between ::ffff:10.0.0.1 and ::ffff:10.0.0.2 would use InetAddressType ipv4(1).

Unlike the udpTable in RFC 2013, this table also allows the representation of an application that completely specifies both local and remote addresses and ports. A single application is represented in three possible ways:

  1. An application that is willing to accept both IPv4 and IPv6 datagrams is represented by udpEndpointLocalAddressType of unknown(0) and udpEndpointLocalAddress of ''h (a zero-length octet-string).
  2. An application that is willing to accept only IPv4 or only IPv6 datagrams is represented by udpEndpointLocalAddressType of the appropriate address type and udpEndpointLocalAddress of '0.0.0.0' or '::' respectively.
  3. An application that is listening for datagrams only for a specific IP address but from any remote system is represented by udpEndpointLocalAddressType of the appropriate address type, with udpEndpointLocalAddress specifying the local address.

In all cases where the remote is a wildcard, the udpEndpointRemoteAddressType is unknown(0), the udpEndpointRemoteAddress is ''h (a zero-length octet-string), and the udpEndpointRemotePort is 0.

If the operating system is demultiplexing UDP packets by remote address and port, or if the application has 'connected' the socket specifying a default remote address and port, the udpEndpointRemote* values should be used to reflect this.

This table contains the following leaf objects:

  • udpEndpointLocalAddressType

  • udpEndpointLocalAddress

  • udpEndpointLocalPort

  • udpEndpointRemoteAddressType

  • udpEndpointRemoteAddress

  • udpEndpointRemotePort

  • udpEndpointInstance

  • udpEndpointProcess

The indexes of this object are udpEndpointLocalAddressType, udpEndpointLocalAddress, udpEndpointLocalPort, udpEndpointRemoteAddressType, udpEndpointRemoteAddress, udpEndpointRemotePort, and udpEndpointInstance.

OID

Object Name

Syntax

Max Access

Description

Implemented Specifications

1.3.6.1.2.1.7.7.1.1

udpEndpointLocalAddressType

InetAddressType

Not-accessible

This object indicates the address type of udpEndpointLocalAddress. Only IPv4, IPv4z, IPv6, and IPv6z addresses are expected, or unknown(0) if datagrams for all local IP addresses are accepted.

Currently, the UDP module of the AR supports only IPv4(1).

1.3.6.1.2.1.7.7.1.2

udpEndpointLocalAddress

InetAddress

Not-accessible

This object indicates the local IP address for this UDP endpoint.

The value of this object can be represented in three possible ways, depending on the characteristics of the application:

1. For an application that is willing to accept both IPv4 and IPv6 datagrams, the value of this object must be ''h (a zero-length octet-string), with the value of the corresponding instance of the udpEndpointLocalAddressType object being unknown(0).

2. For an application that is willing to accept only IPv4 or only IPv6 datagrams, the value of this object must be '0.0.0.0' or '::', respectively, while the corresponding instance of the udpEndpointLocalAddressType object represents the appropriate address type.

3. For an application that is listening for data destined only to a specific IP address, the value of this object is the specific IP address for which this node is receiving packets, with the corresponding instance of the udpEndpointLocalAddressType object representing the appropriate address type.

As this object is used in the index for the udpEndpointTable, implementors of this table should be careful not to create entries that would result in OIDs with more than 128 subidentifiers; else the information cannot be accessed using SNMPv1, SNMPv2c, or SNMPv3.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.2.1.7.7.1.3

udpEndpointLocalPort

InetPortNumber

Not-accessible

This object indicates the local port number for this UDP endpoint.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.2.1.7.7.1.4

udpEndpointRemoteAddressType

InetAddressType

Not-accessible

This object indicates the address type of udpEndpointRemoteAddress. Only IPv4, IPv4z, IPv6, and IPv6z addresses are expected, or unknown(0) if datagrams for all remote IP addresses are accepted. Also, note that some combinations of udpEndpointLocalAdressType and udpEndpointRemoteAddressType are not supported. In particular, if the value of this object is not unknown(0), it is expected to always refer to the same IP version as udpEndpointLocalAddressType.

Currently, the UDP module of the AR supports only IPv4(1).

1.3.6.1.2.1.7.7.1.5

udpEndpointRemoteAddress

InetAddress

Not-accessible

This object indicates the remote IP address for this UDP endpoint. If datagrams from any remote system are to be accepted, this value is ''h (a zero-length octet-string). Otherwise, it has the type described by udpEndpointRemoteAddressType and is the address of the remote system from which datagrams are to be accepted or to which all datagrams will be sent.

As this object is used in the index for the udpEndpointTable, implementors of this table should be careful not to create entries that would result in OIDs with more than 128 subidentifiers; else the information cannot be accessed using SNMPv1, SNMPv2c, or SNMPv3.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.2.1.7.7.1.6

udpEndpointRemotePort

InetPortNumber

Not-accessible

This object indicates the remote port number for this UDP endpoint. If datagrams from any remote system are to be accepted, this value is zero.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.2.1.7.7.1.7

udpEndpointInstance

Unsigned32 (1..'ffffffff'h)

Not-accessible

This object indicates the instance of this tuple. This object is used to distinguish among multiple processes 'connected' to the same UDP endpoint. For example, on a system implementing the BSD sockets interface, this would be used to support the SO_REUSEADDR and SO_REUSEPORT socket options.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.2.1.7.7.1.8

udpEndpointProcess

Unsigned32

Read-only

This object indicates the system's process ID for the process associated with this endpoint, or zero if there is no such process. This value is expected to be the same as HOST-RESOURCES-MIB::hrSWRunIndex or SYSAPPL-MIB:: sysApplElmtRunIndex for some row in the appropriate tables.

This object is implemented as defined in the corresponding MIB file.

Creation Restriction

This table cannot be created.

Modification Restriction

This table cannot be modified.

Deletion Restriction

This table cannot be deleted.

Access Restriction

The entries in this table can be read only when there is a UDP endpoint bound to an interface number. If a UDP endpoint establishes a connection with its remote end, the value of udpEndpointLocalAddress is the address of the remote end and the value of udpEndpointRemotePort is the interface number of the remote end. Otherwise, the values of udpEndpointLocalAddress and udpEndpointRemotePort are 0.

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Updated: 2019-07-19

Document ID: EDOC1000174090

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