interfaces-batman - B.A.T.M.A.N. adv. extensions for the interfaces(5) file format
Better Approach To Mobile Ad-Hoc Networking (B.A.T.M.A.N.) advanced is a mesh protocol which provides an Ethernet overlay network over an Ethernet underlay. The overlay interface is called meshif whereas underlay interfaces are called hardif.
It’s supported in the Linux kernel and thus available in many Linux environments. The ifupdown-ng exectuor relies on the batctl tool being installed. Support for setting interface based hop-penalties required Linux Kernel 5.8 or later.
B.A.T.M.A.N. adv. adds 30-60 bytes of encapsulation overhead depending on wether netword coding is activated or not. This should be taken into consideration when setting up overlay networks, particularly on underlay networks with a conventional 1500 byte MTU.
See https://www.open-mesh.org/projects/open-mesh/wiki for more details and updates.
The following options allow to set up B.A.T.M.A.N. adv. interfaces.
batman-ifaces list of interfaces
Specifies the underlay interfaces (hardifs) which should be configured for the B.A.T.M.A.N. adv. meshif defined within the iface stanza.
batman-hop-penalty hop-penalty
The hop-penalty defines the cost of traversing a node or an interface. The hop-penalty is a numeric value between 0 and 255. Historically a hop-penalty could only be set on a meshif, since B.A.T.M.A.N adv. v2020.3 (included in Kernel 5.8) it can also be set on a per-interfaces (hardif) basis.
batman-gw-mode gw-mode
Denotes the gateway mode which controls the role this node will play within this B.A.T.M.A.N. adv. instance. The mode can be off, client, or server.
batman-distributed-arp-table mode
Activates or deactivates the Distributed ARP table (DAT) within this B.A.T.M.A.N. adv. instance. Valid values are enable and disable.
batman-multicast-mode mode
Activates or deactivates the multicast mode of this B.A.T.M.A.N. adv. instance. Valid values are enable and disable.
A B.A.T.M.A.N. adv. meshif:
auto
bat-pad-cty
iface bat-pad-cty
|
batman-ifaces dummy-pad-cty vlan1234 | ||
|
batman-hop-penalty 5 | ||
|
# | ||
|
hwaddress f2:00:c1:01:00:00 | ||
|
mtu 1500 |
A B.A.T.M.A.N. adv. member interfaces (hardif):
auto vlan1234
iface vlan1234
|
mtu 1560 | |
|
batman-hop-penalty 10 |
batctl(8)
Maximilian Wilhelm <[email protected]>