IntraServer Technology ITIpci 5100G/GF - Manual (Page 37)

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VLAN tagging is only required to be enabled on switch ports that
create trunk links to other VLAN capable switches, or on ports
connected to tag-capable end-stations, such as servers or workstations
with ITI5100G/GF adapters.
Configuring VLANs
By default, Alteon WebSystems switches have a single VLAN configured for
every port, which groups all ports into the same broadcast domain, just as if
there were no VLANs at all. This default VLAN has an 802.1Q-1998 VLAN
identification number of [1], with VLAN tagging for the switch port turned
off.
If you are using a VLAN capable switch from another manufacturer, consult
the documentation for your switch before continuing.
To configure VLANs, perform the following procedure:
Note: If you configure a VLAN for an adapter, all traffic sent or received
by that adapter must be in VLANs.
1. Create the /etc/hostname.alt file(s) on the server.
There can be up to four adapters per server, and up to 64 VLANs
defined per adapter.
One /etc/hostname.alt <num> file must be created for each
VLAN that will be configured for each adapter on the server. Create
files using the following naming format:
/etc/hostname.alt <num>
For each file, the number <num> in the filename is determined according
to the table below. For example, the first adapter in the server requires a
file named /etc/hostname.alt0 for its first VLAN, and a file
named /etc/hostname.alt100 for its second VLAN.
Up to 64
VLANs
First Adapter Second Adapter Third Adapter Fourth Adapter
1
/etc/hostname
.alt0 /etc/hostname
.alt1 /etc/hostname
.alt2 /etc/hostname
.alt3
2
/etc/hostname
.alt100 /etc/hostname
.alt101 /etc/hostname
.alt102 /etc/hostname
.alt103
3
/etc/hostname
.alt200 /etc/hostname
.alt201 /etc/hostname
.alt202 /etc/hostname
.alt203