HP OneView - Manual (Page 141)

Tagged Ethernet networks that are connected to enclosure interconnects require a VLAN ID.
•
You can add multiple Ethernet networks that use the same VLAN ID. This capability is required
for logical interconnects that use an
active/active configuration .
•
Each network name in the appliance must be unique.
•
The number of networks supported on an appliance is limited by the number of networks
added, not the number of VLAN IDs that are used.
Tagged Ethernet networks and network sets
You can assign multiple tagged Ethernet networks to a named group called a network set. Later,
when you add a connection in a server profile, you can select this network set to enable multiple
networks to be selected for that single connection.
18.6.2 About untagged Ethernet networks
An untagged network is a single dedicated network without a VLAN tag with a dedicated set of
uplink ports. Untagged networks are used to pass traffic without VLAN tags through the stacking
domain. Any tagged packets are dropped. Forwarding is done by MAC address. You may want
an untagged network for iSCSI storage traffic or if you want to set up networks without configuring
VLANs.
18.6.3 About tunnel Ethernet networks
A tunnel network is a single dedicated network with a dedicated set of uplink ports used to pass
a group of VLANs without changing the VLAN tags. You may want to use tunnel networks if you
want to expand beyond the current total of 1000 networks per logical interconnect and 162
networks per downlink port, or if you want to control the resources and QoS. You can have a
tunnel network with a maximum of 4096 VLANs.
18.6.4 Managing Ethernet networks
When you add an Ethernet network to the appliance, you are adding a VLAN to the configuration.
VLANs allow multiple networks to use the same physical connections. Servers can specify networks
without knowledge of the underlying hardware configuration.
When you add an Ethernet network, you might also want to an existing network set or add it to a
new network set. For example, by adding the Ethernet network to an existing network set, all servers
that have connections to the network set can access the added network without requiring you to
change the server profiles.
For Ethernet connections, a logical uplink is a way to identify interconnect module uplinks that
carry multiple networks over the same cable. When you add a network, you must also add it to
an existing uplink set or a new uplink set.
You can manage networks and network sets from the UI Networks and Network Sets screens or
by using the REST APIs.
IMPORTANT: HP recommends that you back up the appliance after you make configuration
changes to networks. For information about backing up the appliance, see “Backing up an
appliance” (page 183) .
18.7 Data center switch port requirements
Although you can configure an uplink set to receive incoming network traffic as untagged by
designating a network in that uplink set as Native, traffic egressing the uplink set is always VLAN
tagged.
18.7 Data center switch port requirements 141