yolobi.blogg.se - Pinging loopback address

Possible settings for special Precedence range from priority (0x20) to net control (0xe0).

Multiple TOS bits should not be set simultaneously.

Possible settings for Type of Service are: minimal cost: 0x02, reliability: 0x04, throughput The average rate of successful message delivery over a communication channel.: 0x08, low delay: 0x10.

Traditionally (RFC1349), these have been interpreted as: 0 for reserved (currently being redefined as congestion control), 1-4 for Type of Service and 5-7 for Precedence.

tos: Set Quality of Service -related bits in ICMP datagrams An independent, self-contained message sent over the network whose arrival, arrival time, and content are not guaranteed.

For example, -p ff will cause the sent packet to be filled with all ones. This is useful for diagnosing data-dependent problems in a network. Pattern: You can specify up to 16 “pad” bytes to fill out the packet you send. No attempt is made to lookup symbolic names for host addresses. The hint can be either do (prohibit fragmentation, even local one), want (do PMTU discovery, fragment locally when packet size is large), or dont (do not set DF flag). discovery hint: Select Path MTU Discovery strategy. The largest size packet that a device can transmit on a network. This flag only applies if the ping destination is a multicast address. Only the super-user can select preload more than 3.

Preload: If preload is specified, ping sends that many packets not waiting for reply. When pinging IPv6 link-local address this option is required. Argument can be a numeric IP address or name of device. Interface address: Set source address to specified interface address. Only a super-user can set interval to values less 0.2 seconds. The default is to wait for one second between each packet normally, or not to wait in flood mode. Interval: Wait interval seconds between sending each packet. If value is zero, kernel allocates random flow label. It is also a unit of measurement, the information capacity of one binary digit. label: Allocate and set 20 bit A binary digit, taking a logical value of either "1" or "0" (also referred to as "true" or "false" respectively). Essentially, this socket option is not used by Linux kernel.įlow A stream of packets transmitted between two endpoints usually identified by a Protocol, Source Address, and Destination Address (and possibly source & destination port numbers). Set the SO_DEBUG option on the socket being used. With deadline option, ping waits for count ECHO_REPLY packets, until the time- out expires. The address is bound to one selected when ping starts.Ĭount: Stop after sending count ECHO_REQUEST packets. On networks with low rtt this mode is essentially equivalent to flood mode.ĭo not allow ping to change source address of probes. Minimal interval is 200 msec if not super-user.

Interpacket interval adapts to round-trip time, so that effectively not more than one (or more, if preload is set) unanswered probes present in the network.

The following ping options are supported:Īdaptive ping. Network layer protocol in the TCP/IP stack that enables a connectionless internetwork service. If you want to ping out of a datapath interface, use the -I option with the local appliance IP Internet Protocol.

By default, the ping command uses the mgmt0 interface.A network host can host information as well as client and/or server software. An internet protocol used by networked computers’ operating systems to manage errors and generate control messages.) echo requests to a specified host In computer networking, a network host, Internet host or host is a computer connected to the Internet. Control Message Protocol ( ICMP Internet Control Message Protocol. Use the ping command to send Internet A global network of interconnected computers, enabling users to share information along multiple channels.and traceroute commands to help diagnose network connectivity problems. Use the ping A programs used to test whether a particular network destination is online, by sending an Internet Control Message Protocol (ICMP) echo request and waiting for a response.