Hi Tom,
Thanks! Very helpful informations!
Janos Mohacsi
Network Engineer, Research Associate, Head of Network Planning and Projects
NIIF/HUNGARNET, HUNGARY
Key 70EF9882: DEC2 C685 1ED4 C95A 145F 4300 6F64 7B00 70EF 9882
On Tue, 21 Aug 2007, Tom Judge wrote:
Mohacsi Janos wrote:
Dear All,
What is the recommended way to configure vlan interfaces on
etherchannel bonded interfaces in a failure mode. I found, that
etherchannel is supported by ng_fec(4) (but not exactly what I want) and
also found that there two? way of configuring vlans: vlan(4) and
ng_vlan(4). But I did not found any description or configuration snippet to
configure both preferentially via /etc/rc.conf neither in FreeBSD
6.x-stable, neither in FreeBSD-7.0-current. What I want to achieve:
[switch1]-----GE---bge0----\ /----vlan100
}=={-----vlan101
[switch2]-----FE---bge1----/ \----vlan102
\---vlan103
I would like to prefer all the vlans via bge0 with GE towards switch1. And
use only bge1 in case of switch1 or bge0 link failure.
I could use bond on Linux for this purpose. How to achieve similar setup?
You may want to take a look at if_lagg, it supports EtherChannel (AKA fec),
LACP and failover modes (Which is what you would need). It is available in
RELENG_6 and Current.
You may wish to take a look at:
http://nzfug.nz.freebsd.org/nzfug/HandbookUpdates/NetworkAggregation
rc.conf entries for the example might look like (not tried this):
cloned_interfaces="lagg0"
ifconfig_lagg0="laggproto lacp laggport fxp0 laggport fxp1"
As for the vlan interfaces we use if_vlan and rc.conf snippets look as
follows:
cloned_interfaces="vlan1 vlan2"
ifconfig_vlan1="inet x.x.x.x/24 vlan 1 vlandev bge1"
ifconfig_vlan2="inet x.x.x.x/24 vlan 2 vlandev bge1"
Putting these to together for you use might look like this:
cloned_interfaces="lagg0 vlan100 vlan101 vlan102 vlan103"
ifconfig_lagg0="laggproto failover laggport bge0 laggport bge1"
ifconfig_vlan100="inet x.x.x.x/24 vlan 100 vlandev lagg0"
ifconfig_vlan101="inet x.x.x.x/24 vlan 101 vlandev lagg0"
ifconfig_vlan102="inet x.x.x.x/24 vlan 102 vlandev lagg0"
ifconfig_vlan103="inet x.x.x.x/24 vlan 103 vlandev lagg0"
Tom
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