mirror of
git://slackware.nl/current.git
synced 2024-12-28 09:59:53 +01:00
53 lines
1.9 KiB
Text
53 lines
1.9 KiB
Text
|
VLANs (aka, 802.1q)
|
||
|
|
===================
|
||
|
|
|
||
|
|
Features
|
||
|
|
--------
|
||
|
|
* Simple configuration of VLAN interfaces using standard rc.inet1.conf
|
||
|
|
variables.
|
||
|
|
* Utilises the new IFOPTS[x]="" paramter, which allows VLAN interface
|
||
|
|
specific configuration, supporting the use of any option.
|
||
|
|
* VLAN interfaces can be built on top of bonds and virtual or physical
|
||
|
|
interfaces.
|
||
|
|
|
||
|
|
|
||
|
|
Configuration
|
||
|
|
-------------
|
||
|
|
Configuring VLAN bound interfaces utilises the standard Slackware networking
|
||
|
|
configuration syntax in rc.inet1.conf, with setting up an interface as simple
|
||
|
|
as changing the IFNAME[x].
|
||
|
|
|
||
|
|
VLAN interfaces can be configured quite simply in rc.inet1.conf, in the standard
|
||
|
|
Slackware way of defining an interface. The key to the configuration is to use
|
||
|
|
the correct IFNAME[x]="" setting for the underlying ethernet (or bond) interface
|
||
|
|
and the tagged VLAN ID that should be exposed. For example:
|
||
|
|
IFNAME[0]="eth0.10"
|
||
|
|
IFOPTS[0]=""
|
||
|
|
IPADDR[0]="192.168.10.1"
|
||
|
|
NETMASK[0]="24"
|
||
|
|
|
||
|
|
The VLAN ID is taken from the full interface name, which is comprised of the
|
||
|
|
underlying interface name, a period (.) and then the VLAN ID to expose.
|
||
|
|
The above example would use the physical interface 'eth0', and expose the VLAN
|
||
|
|
with ID '10'.
|
||
|
|
|
||
|
|
It is also possible to use a bond as the underlying interface, which allows
|
||
|
|
link aggregated VLAN interfaces to be created for network redundancy.
|
||
|
|
|
||
|
|
The interfaces support IPv4 and IPv6 IP addressing configured in the Slackware
|
||
|
|
way in rc.inet1.conf.
|
||
|
|
|
||
|
|
IFOPTS[x] is a pipe (|) delimited list of VLAN kernel module specific settings
|
||
|
|
to be applied to the interface. The ip-link(8) man page contains details of
|
||
|
|
exactly what settings can be used with this option (search for "VLAN Type
|
||
|
|
Support"). For example:
|
||
|
|
VLANOPTS[x]="protocol 802.1ad | reorder_hdr off"
|
||
|
|
|
||
|
|
Under normal circumstances, where a standard VLAN interface is required, no
|
||
|
|
options should be supplied.
|
||
|
|
|
||
|
|
|
||
|
|
--
|
||
|
|
Darren 'Tadgy' Austin.
|
||
|
|
<darren (at) afterdark.org.uk>
|