A table containing information about TCP listeners. A listening application can be represented in three possible ways:
1. An application that is willing to accept both IPv4 and IPv6 datagrams is represented by a tcpListenerLocalAddressType of unknown (0) and a tcpListenerLocalAddress of ''h (a zero-length octet-string).
2. An application that is willing to accept only IPv4 or IPv6 datagrams is represented by a tcpListenerLocalAddressType of the appropriate address type and a tcpListenerLocalAddress of '0.0.0.0' or '::'
respectively.
3. An application that is listening for data destined only to a specific IP address, but from any remote system, is represented by a tcpListenerLocalAddressType of an appropriate address type, with tcpListenerLocalAddress as the specific local address.
NOTE: 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)).
The indexes of the table are tcpListenerLocalAddressType, tcpListenerLocalAddress, tcpListenerLocalPort.
|
OID |
Object |
Syntax |
Max Access |
Description |
Implemented Specifications |
|---|---|---|---|---|---|
|
1.3.6.1.2.1.6.20.1.1 |
tcpListenerLocalAddressType |
INTEGER{unknown(0),ipv4(1),ipv6(2),ipv4z(3),ipv6z(4),dns(16)} |
not-accessible |
The address type of tcpListenerLocalAddress. The value should be unknown (0) if connection initiations to all local IP addresses are accepted. |
The actually supported value range is IPv4(1); IPv6(3);IPv6z(4). Only supports IPv4(1), IPv6(3) and IPv6z(4)types |
|
1.3.6.1.2.1.6.20.1.2 |
tcpListenerLocalAddress |
OCTET STRING{(0,255)} |
not-accessible |
The local IP address for this TCP connection. The value of this object can be represented in three possible ways, depending on the characteristics of the listening application: 1. For an application 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 tcpListenerLocalAddressType object being unknown (0). 2. For an application willing to accept only IPv4 or IPv6 datagrams, the value of this object must be '0.0.0.0' or '::' respectively, with tcpListenerLocalAddressType representing the appropriate address type. 3. For an application which is listening for data destined only to a specific IP address, the value of this object is the specific local address, with tcpListenerLocalAddressType representing the appropriate address type. As this object is used in the index for the tcpListenerTable, implementors should be careful not to create entries that would result in OIDs with more than 128 subidentifiers; otherwise the information cannot be accessed, using SNMPv1, SNMPv2c, or SNMPv3. |
This object is implemented as defined in the corresponding MIB files. |
|
1.3.6.1.2.1.6.20.1.3 |
tcpListenerLocalPort |
Unsigned32{(0,65535)} |
not-accessible |
The local port number for this TCP connection. |
This object is implemented as defined in the corresponding MIB files. |
|
1.3.6.1.2.1.6.20.1.4 |
tcpListenerProcess |
Unsigned32 |
read-only |
The system's process ID for the process associated with this listener, 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 files. |