CISCO-IETF-SCTP-EXT-MIB

Unsigned32 · milliseconds

Reference: [SIGAS] Telephony Signaling Transport over SCTP Applicability Statement

The minimum value permitted by a SCTP implementation for the retransmission timeout, measured in milliseconds. More refined semantics for objects of this type depend upon the algorithm used to determine the retransmission timeout. Minimum recommended value is 1000 milliseconds. Some telephony applications could require less than 1 second, see [SIGAS] for further information.

Unsigned32 · milliseconds

The maximum value permitted by a SCTP implementation for the retransmission timeout, measured in milliseconds. More refined semantics for objects of this type depend upon the algorithm used to determine the retransmission timeout. Recommended value is 60000 milliseconds.

Unsigned32 · milliseconds

Initial value for the Retransmission timer. Recommended value is 3000 milliseconds.

Unsigned32 · milliseconds

Valid cookie life in the 4-way start-up handshake procedure. Recommended value: 60000 milliseconds.

Unsigned32

The maximum number of retransmissions at the start-up phase (INIT and COOKIE ECHO chunks). Recommended value: 8 attempts.

Unsigned32 (37..65535) · bytes

The Maximum Transmission Size to be used by this association. The size will the smallest MTU size supported by any of the IP Addresses used by the association.

Unsigned32 (1..65535) · bytes

The current local receive window size for this association.

Gauge32 (0..65535) · bytes

Low water mark for Local Receive Window Size.

Counter32

Number of times the Local Receive window reached zero bytes.

Unsigned32 (0..65535) · bytes

The Remote Receive Window Size for this association.

Gauge32 (0..65535) · bytes

Low water mark for Remote Receive Window Size.

Counter32

Number of times the Remote Receive window reached zero bytes.

Gauge32 (0..65535) · datagrams

Current number of IP datagrams waiting to be sent.

Gauge32 (0..65535) · datagrams

High water mark for data grams waiting to be sent. Resetting this object is achieved by setting this object to 0. Attempting to set this object to any other value will result in a wrongValue error.

TimeStampThe value of the sysUpTime object at which a specific occurrence happened. The specific occurrence must be defined in the description of any object defined using this type. If sysUpTime is reset to zero as a result of a re- initialization of the network management (sub)system, then the values of all TimeStamp objects are also reset. However, after approximately 497 days without a re- initialization, the sysUpTime object will reach 2^^32-1 and then increment around to zero; in this case, existing values of TimeStamp objects do not change. This can lead to ambiguities in the value of TimeStamp objects. · TimeTicks

The time when cSctpAssocUlpQueuedHW was set to 0.

Counter32 · chunks

Number of control Chucks received by this association.

Counter32 · chunks

Number of Chucks received by this association where order is required.

Counter32 · chunks

Number of Chucks received by this association where order is not required.

Counter32 · chunks

Number of control Chucks sent by this association.

Counter32 · chunks

Number of Chucks sent by this association where order is required.

Counter32 · chunks

Number of Chucks sent by this association where order is not required.

Counter32 · datagrams

Number of IP datagrams received by this association.

Counter32 · datagrams

Number of IP datagrams sent by this association.

InetAddressType0 = unknown1 = ipv42 = ipv63 = ipv4z4 = ipv6z16 = dnsA value that represents a type of Internet address. unknown(0) An unknown address type. This value MUST be used if the value of the corresponding InetAddress object is a zero-length string. It may also be used to indicate an IP address that is not in one of the formats defined below. ipv4(1) An IPv4 address as defined by the InetAddressIPv4 textual convention. ipv6(2) An IPv6 address as defined by the InetAddressIPv6 textual convention. ipv4z(3) A non-global IPv4 address including a zone index as defined by the InetAddressIPv4z textual convention. ipv6z(4) A non-global IPv6 address including a zone index as defined by the InetAddressIPv6z textual convention. dns(16) A DNS domain name as defined by the InetAddressDNS textual convention. Each definition of a concrete InetAddressType value must be accompanied by a definition of a textual convention for use with that InetAddressType. To support future extensions, the InetAddressType textual convention SHOULD NOT be sub-typed in object type definitions. It MAY be sub-typed in compliance statements in order to require only a subset of these address types for a compliant implementation. Implementations must ensure that InetAddressType objects and any dependent objects (e.g., InetAddress objects) are consistent. An inconsistentValue error must be generated if an attempt to change an InetAddressType object would, for example, lead to an undefined InetAddress value. In particular, InetAddressType/InetAddress pairs must be changed together if the address type changes (e.g., from ipv6(2) to ipv4(1)). · Integer32

Internet type of effective destination IP address. This is the type of IP address to which traffic is currently sent for this association.

InetAddressDenotes a generic Internet address. An InetAddress value is always interpreted within the context of an InetAddressType value. Every usage of the InetAddress textual convention is required to specify the InetAddressType object that provides the context. It is suggested that the InetAddressType object be logically registered before the object(s) that use the InetAddress textual convention, if they appear in the same logical row. The value of an InetAddress object must always be consistent with the value of the associated InetAddressType object. Attempts to set an InetAddress object to a value inconsistent with the associated InetAddressType must fail with an inconsistentValue error. When this textual convention is used as the syntax of an index object, there may be issues with the limit of 128 sub-identifiers specified in SMIv2, STD 58. In this case, the object definition MUST include a 'SIZE' clause to limit the number of potential instance sub-identifiers; otherwise the applicable constraints MUST be stated in the appropriate conceptual row DESCRIPTION clauses, or in the surrounding documentation if there is no single DESCRIPTION clause that is appropriate. SIZE (0..255) · OCTET STRING

Reference: [sctp] RFC2960 section 8.1 Endpoint Failure Detection

Effective destination IP address. This is the IP address to which traffic is currently sent for this association. This value can be any of the IP addresses defined in the cSctpAssocRemAddressExtTable Table.

Counter32 · chunks

Reference: RFC 2960 section 7.2.4. - Fast Retransmit on Gap Reports.

The accumulated number of SCTP chunks retransmitted using the fast-recovery retransmission mechanism specified in [sctp] since the start of this association.

TruthValue1 = true2 = falseRepresents a boolean value. · Integer32

This objects indicates if the SCTP protocol allows chunks to be bundled into a single datagram as follows: 'true(1)' Indicates that chunks will be bundled. 'false(2)' Indicates that chunks will not be bundled.

Unsigned32 (1..60000) · milliseconds

The amount time to wait to allow data chunks to accumulate so that they can be transmitted in the same datagram. The arrival of the first data chunk will start a timer that will expire in the specified milliseconds. All later chunks will be delayed until the timer expires. When the timer expires the data chunks will be sent out in one or more datagrams.

Counter32

Number of times the destination address was marked as failed.

Unsigned32 (0..65535) · milliseconds

Reference: [sctp] section 6.3.1 RTO Calculation

The Smoothed Round Trip Time(SRTT) is obtained by averaging the measured Rount trip times(RTT) between the local and remote systems on an IP Network. A value of '0' is reported for SRTT prior to the first successful RTT calculation.