Provided by: iproute2_5.15.0-1ubuntu2_amd64 bug


       tipc-link - show links or modify link properties


       tipc link set
               [ { priority PRIORITY | tolerance TOLERANCE | window WINDOW } link LINK ] |
               [ { broadcast [ BROADCAST  | REPLICAST  | AUTOSELECT [ ratio SIZE ] ] } ]

       tipc link get
               [ { priority | tolerance | window } link LINK ] |
               [ { broadcast } ]

       tipc link statistics { show [ link LINK ] | reset link LINK }

       tipc link list

       tipc link monitor set { threshold }

       tipc link monitor get { threshold }

       tipc link monitor summary

       tipc link monitor list
               [ media  { eth | ib } device DEVICE ] |
               [ media udp name NAME ]


       Options (flags) that can be passed anywhere in the command chain.

       -h, --help
              Show help about last valid command. For example tipc link --help will show link
              help and tipc --help will show general help. The position of the option in the
              string is irrelevant.

       -j, -json
              Output results in JavaScript Object Notation (JSON).

       -p, -pretty
              The default JSON format is compact and more efficient to parse but hard for most
              users to read.  This flag adds indentation for readability.


   Link statistics
       ACTIVE link state
              An ACTIVE link is serving traffic. Two links to the same node can become ACTIVE if
              they have the same link priority.  If there is more than two links with the same
              priority the additional links will be put in STANDBY state.

       STANDBY link state
              A STANDBY link has lower link priority than an ACTIVE link. A STANDBY link has
              control traffic flowing and is ready to take over should the ACTIVE link(s) go

              The Maximum Transmission Unit. The two endpoints advertise their default or
              configured MTU at initial link setup and will agree to use the lower of the two
              values should they differ.

              The total amount of transmitted or received TIPC packets on a link. Including
              fragmented and bundled packets.

              Represented in the form fragments/fragmented.  Where fragmented is the amount of
              data messages which have been broken into fragments.  Subsequently the fragments
              are the total amount of packets that the fragmented messages has been broken into.

              Represented in the form bundles/bundled.  If a link becomes congested the link will
              attempt to bundle data from small bundled packets into bundles of full MTU size
              packets before they are transmitted.

              Shows the average packet size in octets/bytes for a sample of packets. It also
              shows the packet size distribution of the sampled packets in the intervals

              0-64 bytes
              64-256 bytes
              256-1024 bytes
              1024-4096 bytes
              4096-16384 bytes
              16384-32768 bytes
              32768-66000 bytes

       Message counters

              states - Number of link state messages

              probes - Link state messages with probe flag set. Typically sent when a link is

              nacks - Number of negative acknowledgement (NACK) packets sent and received by the

              defs - Number of packets received out of order

              dups - Number of duplicate packets received

       Congestion link
              The number of times an application has tried to send data when the TIPC link was

       Send queue
              Max is the maximum amount of messages that has resided in the out queue during the
              statistics collection period of a link.

              Avg is the average outqueue size during the lifetime of a link.

   Link properties
              The priority between logical TIPC links to a particular node. Link priority can
              range from 0 (lowest) to 31 (highest).

              Link tolerance specifies the maximum time in milliseconds that TIPC will allow a
              communication problem to exist before taking the link down. The default value is
              1500 milliseconds.

              The link window controls how many unacknowledged messages a link endpoint can have
              in its transmit queue before TIPC's congestion control mechanism is activated.

   Monitor properties
              The threshold specifies the cluster size exceeding which the link monitoring
              algorithm will switch from "full-mesh" to "overlapping-ring".  If set of 0 the
              overlapping-ring monitoring is always on and if set to a value larger than
              anticipated cluster size the overlapping-ring is disabled.  The default value is

   Monitor information
              Represents the event count in a node's local monitoring list. It steps every time
              something changes in the local monitor list, including changes in the local domain.

              Represents the current count of cluster members.

              The current supervision algorithm used for neighbour monitoring for the bearer.
              Possible values are full-mesh or overlapping-ring.

              The node status derived by the local node.  Possible status are up or down.

              Represent the type of monitoring chosen by the local node.  Possible values are
              direct or indirect.

              Represents the domain generation which is the event count in a node's local domain.
              Every time something changes (peer add/remove/up/down) the domain generation is
              stepped and a new version of node record is sent to inform the neighbors about this
              change. The domain generation helps the receiver of a domain record to know if it
              should ignore or process the record.

              The node status reported by the peer node for the succeeding peers in the node
              list. The Node list is a circular list of ascending addresses starting with the
              local node.  Possible status are: U or D. The status U implies up and D down.

              Represents the nodes and their status as reported by the peer node.  These nodes
              were not applied to the monitoring list for this peer node.  They are usually
              transient and occur during the cluster startup phase or network reconfiguration.
              Possible status are: U or D. The status U implies up and D down.

   Broadcast properties
              Forces all multicast traffic to be transmitted via broadcast only, irrespective of
              cluster size and number of destinations.

              Forces all multicast traffic to be transmitted via replicast only, irrespective of
              cluster size and number of destinations.

              Auto switching to broadcast or replicast depending on cluster size and destination
              node number.

       ratio SIZE
              Set the AUTOSELECT criteria, percentage of destination nodes vs cluster size.


       tipc link monitor list
           Shows the link monitoring information for cluster members on device data0.

       tipc link monitor summary
           The monitor summary command prints the basic attributes.


       Exit status is 0 if command was successful or a positive integer upon failure.


       tipc(8), tipc-media(8), tipc-bearer(8), tipc-nametable(8), tipc-node(8), tipc-peer(8),


       Report any bugs to the Network Developers mailing list <> where the
       development and maintenance is primarily done.  You do not have to be subscribed to the
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       Richard Alpe <>