Technical data

4. Packages
BRIDGE_DEV_x_DEVNAME Default: BRIDGE_DEV_x_DEVNAME=”
Each bridge device needs a name in the form of ’br number ’. number can be a
number between ’0’ and ’99’ without leading ’0’. Possible entries could be ’br0’, ’br9’
or ’br42’. Names can be chosen arbitrary, the first bridge may be ’br3’ and the second
’br0’.
BRIDGE_DEV_x_DEV_N Default: BRIDGE_DEV_x_DEV_N=’0’
How many network devices belong to the bridge? The count of devices that should be
connected to the bridge. It can even be ’0’ if the bridge is only a placeholder for an
IP-address that should be taken over by a VPN-tunnel connected to the bridge.
BRIDGE_DEV_x_DEV_x_DEV Specifies which device can be connected to the bridge. You
can fill in an eth-device (ie ’eth0’), a bonding device (iE ’bond0’) or also a VLAN-device
(iE ’vlan11’). A device connected here may not be used in other places and is not allowed
to get an IP-address assigned.
BRIDGE_DEV_1_DEV_N='3'
BRIDGE_DEV_1_DEV_1_DEV='eth0.11' #VLAN 11 on eth0
BRIDGE_DEV_1_DEV_2_DEV='eth2'
BRIDGE_DEV_1_DEV_3_DEV='bond0'
BRIDGE_DEV_x_AGING Default: BRIDGE_DEV_x_AGING=’300’
This setting is optional and can also be completely omitted.
Specifies the time after which old entries in the bridges’ MAC table will be deleted. If in
this amount of time in seconds no data is received or transmitted by the computer with
the network card the corresponding MAC address will be deleted in the bridges’ MAC
table.
BRIDGE_DEV_x_GARBAGE_COLLECTION_INTERVAL
Default: BRIDGE_DEV_x_GARBAGE_COLLECTION_INTERVAL=’4’
This setting is optional and can also be completely omitted.
Specifies the time after which „garbage collection“ will be done. All dynamic entries will
be checked. Entries not longer valid and outdated will get deleted. In particular old
invalid connections will be deleted.
BRIDGE_DEV_x_STP Default: BRIDGE_DEV_x_STP=’no’
This setting is optional and can also be completely omitted.
Spanning tree protocol allows to manage multiple connections to different switches. This
results in redundancy ensuring network functionality in case of line failures. Without the
use of STP redundant lines between switches aren’t possible and networking may fail.
STP tries to use the fastest connection between two switches. This way even connections
with different speeds are reasonable. You may iE use a 1 Gbit/s connection as main and
a second 100 Mbit/s as a fallback.
A good source of background informations can be found here:
http://en.wikipedia.org/wiki/Spanning_Tree_Protocol.
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