String restricted to 255 characters. unsignedByte with non zero value. Specifies the AS number of a hop in the traceroute path as a 32-bit number and indicates how the mapping from IP address to AS number was performed. Specifies the address of a hop in the traceroute measurement path. This object is not allowed to be a DNS name. The address type can be determined by examining the "inetAddress" type name and the corresponding element value. Specifies the DNS name of the "HopAddr" if it is available. If it is not available, the element is omitted. Specifies entries of the MPLS label stack of a probe observed when the probe arrived at the hop that replied to the probe. This object contains one MPLS label stack entry as a 32-bit value as it is observed on the MPLS label stack. Contained in this single number are the MPLS label, the Exp field, the S flag, and the MPLS TTL value as specified in [RFC3032]. If more than one MPLS label stack entry is reported, then multiple instances of elements of this type are used. They must be ordered in the same order as on the label stack with the top label stack entry being reported first. If this element contains the element "roundTripTime", this specifies the amount of time measured in milliseconds from when a probe was sent to when its response was received or when it timed out. The value of this element is reported as the truncation of the number reported by the traceroute tool (the output "< 1 ms" is therefore encoded as 0 ms). If it contains the element "roundTripTimeNotAvailable", it means either the probe was lost because of a timeout or it was not possible to transmit a probe. Specifies the result of a traceroute measurement made by the host for a particular probe. Specifies the timestamp for the time the response to the probe was received at the interface. Specifies the raw output data returned by the traceroute measurement for a certain hop in a traceroute measurement path. It is an implementation-dependent, printable string, expected to be useful for a human interpreting the traceroute results. Specifies the metadata for a traceroute operation -- the parameters requested if used in "RequestMetadata" or the actual parameters used if used in "MeasurementMetadata". Specifies the name of a traceroute measurement. This is not necessarily unique within any well-defined scope (e.g., a specific host, initiator of the traceroute measurement). Specifies the name of the operating system on which the traceroute measurement was launched. This element is ignored if used in the "RequestMetadata". Specifies the OS version on which the traceroute measurement was launched. This element is ignored if used in the "RequestMetadata". Specifies the version of the traceroute tool (requested to be used if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). Specifies the name of the traceroute tool (requested to be used if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). In the "RequestMetadata" element, it specifies the host address requested to be used in the traceroute measurement. In the "MeasurementMetadata" element, it specifies the host address used in the traceroute measurement. The host address type can be determined by examining the "inetAddress" type name and the corresponding element value. In the "RequestMetadata" element specifies if the optional bypassing of the route table was enabled or not. In the "MeasurementMetadata" element, specifies if the optional bypassing of the route table was enabled or not. If enabled, the normal routing tables will be bypassed and the probes will be sent directly to a host on an attached network. If the host is not on a directly attached network, an error is returned. This option can be used to perform the traceroute measurement to a local host through an interface that has no route defined. This object can be used when the setsockopt SOL_SOCKET SO_DONTROUTE option is supported and set (see the POSIX standard IEEE.1003-1G.1997). Specifies the size of the probes of a traceroute measurement in octets (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). If UDP datagrams are used as probes, then the value contained in this object is exact. If another protocol is used to transmit probes (i.e., TCP or ICMP) for which the specified size is not appropriate, then the implementation can use whatever size (appropriate to the method) is closest to the specified size. The maximum value for this object is computed by subtracting the smallest possible IP header size of 20 octets (IPv4 header with no options) and the UDP header size of 8 octets from the maximum IP packet size. An IP packet has a maximum size of 65535 octets (excluding IPv6 jumbograms). Specifies the timeout value, in seconds, for each probe of a traceroute measurement (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). Specifies the number of probes with the same time-to-live (TTL) value that are sent for each host (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). Specifies the base port used by the traceroute measurement (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). Specifies the maximum TTL value for the traceroute measurement (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). Specifies the value that was requested to be stored in the Differentiated Services (DS) field in the traceroute probe (if in the "RequestMetadata" element). Specifies the value that was stored in the Differentiated Services (DS) field in the traceroute probe (if in the "MeasurementMetadata" element). The DS field is defined as the Type of Service (TOS) octet in an IPv4 header or as the Traffic Class octet in an IPv6 header (see Section 7 of [RFC8200]). The value of this object must be a decimal integer in the range from 0 to 255. This option can be used to determine what effect an explicit DS field setting has on a traceroute measurement and its probes. Not all values are legal or meaningful. Useful TOS octet values are probably 16 (low delay) and 8 (high throughput). Further references can be found in [RFC2474] for the definition of the Differentiated Services (DS) field and in [RFC1812] Section 5.3.2 for Type of Service (TOS). Specifies the IP address (which has to be given as an IP number, not a hostname) as the source address in traceroute probes (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). On hosts with more than one IP address, this option can be used in the "RequestMetadata" element to force the source address to be something other than the primary IP address of the interface the probe is sent on; the value "unknown" means the default address will be used. The address type can be determined by examining the "inetAddress" type name and the corresponding element value. Specifies the interface index as defined in [RFC2863] that is requested to be used in the traceroute measurement for sending the traceroute probes (if in the "RequestMetadata" element). A value of 0 indicates that no specific interface is requested. Specifies the interface index actually used (if in the "MeasurementMetadata" element). Specifies implementation-dependent options (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). Specifies the maximum number of consecutive timeouts allowed before terminating a traceroute measurement (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). A value of either 255 (maximum hop count/possible TTL value) or 0 indicates that the function of terminating a remote traceroute measurement when a specific number of consecutive timeouts are detected was disabled. This element is included to give full compatibility with [RFC4560]. No known implementation of traceroute currently supports it. Specifies if the don't fragment (DF) flag in the IP header for a probe was enabled or not (if in the "MeasurementMetadata" element). If in the "RequestMetadata", it specifies if the flag was requested to be enabled or not. Setting the DF flag can be used for performing a manual PATH MTU test. Specifies the initial TTL value for a traceroute measurement (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). Such TTL setting is intended to bypass the initial (often well-known) portion of a path. Provides a description of the traceroute measurement. Specifies the implementation method used for the traceroute measurement (requested if in the "RequestMetadata" element, actually used if in the "MeasurementMetadata" element). It specifies if the traceroute is using TCP, UDP, ICMP, or other types of probes. It is possible to specify other types of probes by using an element specified in another schema with a different namespace. Contains the actual traceroute measurement results. Specifies the name of a traceroute measurement. This is not necessarily unique within any well-defined scope (e.g., a specific host, initiator of the traceroute measurement). Specifies the date and start time of the traceroute measurement. This is the time when the first probe was seen at the sending interface. Specifies the IP address associated with a "CtlTargetAddress" value when the destination address is specified as a DNS name. The value of this object should be "unknown" if a DNS name is not specified or if a specified DNS name fails to resolve. The address type can be determined by examining the "inetAddress" type name and the corresponding element value. Specifies the date and end time of the traceroute measurement. It is either the time when the response to the last probe of the traceroute measurement was received or the time when the last probe of the traceroute measurement was sent plus the relative timeout (in case of a missing response).