87 lines
2 KiB
Markdown
87 lines
2 KiB
Markdown
interfaces-bridge(5)
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# NAME
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*interfaces-bridge* - Bridge extensions for the interfaces(5) file format
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# DESCRIPTION
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Linux has support for Ethernet bridging interfaces which act like an
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Ethernet switch within the Linux Kernel. The following options allow
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to set up Ethernet bridges and adding configured interfaces to bridges.
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See *ip-link*(8) for more details about the options listed below.
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# BRIDGE-RELATED OPTIONS
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*bridge-ports* _list of interfaces_
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A space separated list of interfaces which should be configured
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as member interfaces of this bridge. This option must be set
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for the bridge to be configured.
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*bridge-hw* _MAC address_
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Denotes the _MAC address_ the bridge should use.
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*bridge-ageing* _seconds_
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Denotes the time in seconds after which a MAC address will be
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removed from the Forwarding DataBase (FDB) after not having
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seen a frame with this source address.
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# SPANNING TREE RELATED BRIDGE OPTIONS
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*bridge-stp* _state_
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Activates or deactivates IEEE 802.1d Spanning Tree Protocol
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(STP) support of the bridge. Valid values are _on_/_off_.
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*bridge-bridgeprio* _priority_
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Sets the bridge's priority to _priority_. The priority value is
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a number between 0 and 65535. Lower priority values are better.
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The bridge with the lowest priority will be elected _root
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bridge_.
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*bridge-fd* _seconds_
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Denotes the bridge forward delay in seconds. Valid values are
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between 2 and 30.
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*bridge-hello* _seconds_
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Denotes the bridge hello time in seconds. Valid values are
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between 1 and 10.
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*bridge-maxage* _seconds_
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Denotes the seconds until another bridge is considerd dead
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after reception of its last STP hello message. Valid values
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are between 6 and 40.
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# EXAMPLES
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A simple layer 2 only bridge:
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```
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auto br0
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iface br0
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bridge-ports eth0 veth-vm1 tap0
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bridge-fd 0
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bridge-stp off
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```
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A bridge with layer 3 configuration:
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```
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auto br0
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iface br0
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bridge-ports eth0 veth-vm1 tap0
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bridge-fd 0
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bridge-stp off
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#
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address 192.0.2.42/24
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address 2001:db8::42/64
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```
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# SEE ALSO
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*ip-link*(8)
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*interfaces*(5)
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# AUTHORS
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Maximilian Wilhelm <max@sdn.clinic>
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