BATCTL(8)

NAME
batctl - B.A.T.M.A.N. advanced control and management tool

SYNOPSIS
batctl [options] command|debug table [parameters]

DESCRIPTION
batctl offers a convenient way to configure the batman-adv kernel module as well as displaying debug information such as originator tables, translation tables and the debug log. In combination with a bat-hosts file batctl allows the use of host names instead of MAC addresses.

B.A.T.M.A.N. advanced operates on layer 2. Thus all hosts participating in the virtual switched network are transparently connected together for all protocols above layer 2. Therefore the common diagnosis tools do not work as expected. To overcome these problems batctl contains the commands ping, traceroute, tcpdump which provide similar functionality to the normal ping(1), traceroute(1), tcpdump(1) commands, but modified to layer 2 behaviour or using the B.A.T.M.A.N. advanced protocol.

OPTIONS

options:
    -m specify mesh interface (default 'bat0')
    -h print general batctl help
    -v print batctl version and batman-adv version (if the module is loaded)

commands:

interface|if [add|del iface(s)]
    If no parameter is given or the first parameter is neither "add" nor "del" the current interface settings are displayed. In order to add or delete interfaces specify "add" or "del" as first argument and append the interface names you wish to add or delete. Multiple interfaces can be specified.

orig_interval|it [interval]
    If no parameter is given the current originator interval setting is displayed otherwise the parameter is used to set the originator interval. The interval is in units of milliseconds.

ap_isolation|ap [0|1]
    If no parameter is given the current ap isolation setting is displayed. Otherwise the parameter is used to enable or disable ap isolation.

bridge_loop_avoidance|bl [0|1]
    If no parameter is given the current bridge loop avoidance setting is displayed. Otherwise the parameter is used to enable or disable the bridge loop avoidance. Bridge loop avoidance support has to be enabled when compiling the module otherwise this option won't be available.

distributed_arp_table|dat [0|1]
    If no parameter is given the current distributed arp table setting is displayed. Otherwise the parameter is used to enable or disable the distributed arp table.

vis_mode|vm [client|server]
    If no parameter is given the current vis mode is displayed otherwise the parameter is used to set the vis mode.

aggregation|ag [0|1]
    If no parameter is given the current aggregation setting is displayed. Otherwise the parameter is used to enable or disable OGM packet aggregation.

bonding|b [0|1]
    If no parameter is given the current bonding mode setting is displayed. Otherwise the parameter is used to enable or disable the bonding mode.

fragmentation|f [0|1]
    If no parameter is given the current fragmentation mode setting is displayed. Otherwise the parameter is used to enable or disable fragmentation.

network_coding|nc [0|1]
    If no parameter is given the current network coding mode setting is displayed. Otherwise the parameter is used to enable or disable network coding.

loglevel|ll [level[ level[ level]] ...]
    If no parameter is given the current log level settings are displayed otherwise the parameter(s) is/are used to set the log level. Level 'none' disables all verbose logging. Level 'batman' enables messages related to routing / flooding / broadcasting. Level 'routes' enables messages related to routes being added / changed / deleted. Level 'tt' enables messages related to translation table operations. Level 'bla' enables messages related to the bridge loop avoidance. Level 'dat' enables messages related to ARP snooping and the Distributed Arp Table. Level 'nc' enables messages related to network coding. Level 'all' enables all messages. The messages are sent to the batman-adv debug log. Use batctl log to retrieve it. Make sure to have debugging output enabled when compiling the module otherwise the output as well as the loglevel options won't be available.

log|l [-n]
    batctl will read the batman-adv debug log which has to be compiled into the kernel module. If "-n" is given batctl will not replace the MAC addresses with bat-host names in the output.

gw_mode|gw [off|client|server] [sel_class|bandwidth]
    If no parameter is given the current gateway mode is displayed otherwise the parameter is used to set the gateway mode. The second (optional) argument specifies the selection class (if 'client' was the first argument) or the gateway bandwidth (if 'server' was the first argument). If the node is a server this parameter is used to inform other nodes in the network about this node's internet connection bandwidth. Just enter any number (optionally followed by "kbit" or "mbit") and the batman-adv module will guess your appropriate gateway class. Use "/" to separate the down- and upload rates. You can omit the upload rate and the module will assume an upload of download / 5.
    default: 2000 -> gateway class 20
    examples: 5000 -> gateway class 49
     5000kbit
     5mbit
     5mbit/1024
     5mbit/1024kbit
     5mbit/1mbit
    If the node is a gateway client the parameter will decide which criterias to consider when the batman-adv module has to choose between different internet connections announced by the aforementioned servers.
    default: 20 -> late switch (TQ 20)
    examples: 1 -> fast connection
        consider the gateway's advertised throughput as well as the link quality towards the gateway and stick with the selection until the gateway disappears
      2 -> stable connection
        chooses the gateway with the best link quality and sticks with it (ignore the advertised throughput)
      3 -> fast switch connection
        chooses the gateway with the best link quality but switches to another gateway as soon as a better one is found
     XX -> late switch connection
        chooses the gateway with the best link quality but switches to another gateway as soon as a better one is found which is at least XX TQ better than the currently selected gateway (XX has to be a number between 3 and 256).

vis_data|vd dot [-n|--numbers][-T|--no-TT][-2|--no-2nd]
    Display the visualisation data in graphviz dot(1) format. If "--numbers" or "-n" is given batctl will not replace the MAC addresses with bat-host names in the output. With "--no-TT" or "-T" the TT entries are not displayed, so the pure mesh topology can be seen. With "--no-2nd" or "-2" a dot cluster is not formed around primary and secondary addresses from the same device.

debug tables:

    The batman-adv kernel module comes with a variety of debug tables containing various information about the state of the mesh seen by each individual node. These tables are exported via debugfs and easily accessible via batctl. You will need debugfs support compiled into your kernel and preferrably have mounted the debugfs to a well-known mountpoint. If debugfs is not mounted batctl will attempt to do this step for you. All of the debug tables support the following options:
    -w refresh the list every second or add a number to let it refresh at a custom interval in seconds (with optional decimal places)
    -n do not replace the MAC addresses with bat-host names in the output
    -H do not show the header of the debug table
    The originator table also supports the "-t" filter option to remove all originators from the output that have not been seen for the specified amount of seconds (with optional decimal places). List of debug tables:
        - originators|o
        - gateways|gwl
        - translocal|tl
        - transglobal|tg
        - claimtable|cl (compile time option)
        - backbonetable|bbt (compile time option)
        - dat_cache|dc (compile time option)
        - nc_nodes|nn (compile time option)

translate|t MAC_address|bat-host_name|host_name|IPv4_address
    Translates a destination (hostname, IPv4, MAC, bat_host-name) to the originator mac address responsible for it.

statistics|s
    Retrieve traffic counters from batman-adv kernel module. The output may vary depending on which features have been compiled into the kernel module.
    Each module subsystem has its own counters which are indicated by their prefixes:
    mgmt - mesh protocol counters
    tt - translation table counters
    All counters without a prefix concern payload (pure user data) traffic.

ping|p [-c count][-i interval][-t time][-R][-T] MAC_address|bat-host_name|host_name|IPv4_address
    Layer 2 ping of a MAC address or bat-host name. batctl will try to find the bat-host name if the given parameter was not a MAC address. It can also try to guess the MAC address using an IPv4 address or a hostname when the IPv4 address was configured on top of the batman-adv interface of the destination device and both source and destination devices are in the same IPv4 subnet. The "-c" option tells batctl how man pings should be sent before the program exits. Without the "-c" option batctl will continue pinging without end. Use CTRL + C to stop it. With "-i" and "-t" you can set the default interval between pings and the timeout time for replies, both in seconds. When run with "-R", the route taken by the ping messages will be recorded. With "-T" you can disable the automatic translation of a client MAC address to the originator address which is responsible for this client.

traceroute|tr [-n][-T] MAC_address|bat-host_name|host_name|IPv4_address
    Layer 2 traceroute to a MAC address or bat-host name. batctl will try to find the bat-host name if the given parameter was not a MAC address. It can also try to guess the MAC address using an IPv4 address or a hostname when the IPv4 address was configured on top of the batman-adv interface of the destination device and both source and destination devices are in the same IPv4 subnet. batctl will send 3 packets to each host and display the response time. If "-n" is given batctl will not replace the MAC addresses with bat-host names in the output. With "-T" you can disable the automatic translation of a client MAC address to the originator address which is responsible for this client.

tcpdump|td [-c][-n][-p filter][-x filter] interface ...
    batctl will display all packets that are seen on the given interface(s). A variety of options to filter the output are available: To only print packets that match the compatibility number of batctl specify the "-c" (compat filter) option. If "-n" is given batctl will not replace the MAC addresses with bat-host names in the output. To filter the shown packet types you can either use "-p" (dump only specified packet types) or "-x" (dump all packet types except specified). The following packet types are available:
    1 - batman ogm packets
    2 - batman icmp packets
    4 - batman unicast packets
    8 - batman broadcast packets
    16 - batman vis packets
    32 - batman fragmented packets
    64 - batman tt / roaming packets
    128 - non batman packets
    Example: batctl td <interface> -p 129 -> only display batman ogm packets and non batman packets

bisect_iv [-l MAC][-t MAC][-r MAC][-s min [- max]][-o MAC][-n] logfile1 [logfile2 ... logfileN]
    Analyses the B.A.T.M.A.N. IV logfiles to build a small internal database of all sent sequence numbers and routing table changes. This database can then be analyzed in a number of different ways. With "-l" the database can be used to search for routing loops. Use "-t" to trace OGMs of a host throughout the network. Use "-r" to display routing tables of the nodes. The option "-s" can be used to limit the output to a range of sequence numbers, between min and max, or to one specific sequence number, min. Furthermore using "-o" you can filter the output to a specified originator. If "-n" is given batctl will not replace the MAC addresses with bat-host names in the output.

FILES

bat-hosts
    This file is similar to the /etc/hosts file. You can write one MAC address and one host name per line. batctl will search for bat-hosts in /etc, your home directory and the current directory. The found data is used to match MAC address to your provided host name or replace MAC addresses in debug output and logs. Host names are much easier to remember than MAC addresses.

SEE ALSO
ping(1), traceroute(1), tcpdump(1), dmesg(1), dot(1)

AUTHOR
batctl was written by Andreas Langer <an.langer@gmx.de> and Marek Lindner <lindner_marek@yahoo.de>.

This manual page was written by Simon Wunderlich <siwu@hrz.tu-chemnitz.de>, Marek Lindner <lindner_marek@yahoo.de> and Andrew Lunn <andrew@lunn.ch>