HP OneView - Manual (Page 144)

For Ethernet networks, an uplink set enables you to identify interconnect uplinks that carry multiple
networks over the same cable. For Fibre Channel connections, you can add one network to an
uplink set. Fibre Channel does allow virtual networks or VLANs.
An uplink set is part of a logical interconnect. The initial configuration of the uplink sets for a logical
interconnect is determined by the configuration of the uplink sets for the logical interconnect group,
but you can change (override) the uplink sets for a specific logical interconnect. Changes you make
to the uplink sets for a logical interconnect group are not automatically propagated to existing
logical interconnects. For example, to propagate a newly added VLAN to a logical interconnect
group uplink set to its existing logical interconnects, you must individually update each logical
interconnect configuration from the logical interconnect group. For active/active configurations,
create a new logical interconnect group rather than updating an existing group.
For each logical interconnect:
•
You can define zero, one, or multiple uplink sets. If you do not define any uplink sets, the
servers in the enclosure cannot connect to data center networks.
•
A network can be a member of one uplink set only.
•
An uplink set can contain only one Fibre Channel network.
•
An uplink set can contain one or more Ethernet networks.
•
You must specify Ethernet networks individually. The use of network sets in uplink sets is not
supported for the following reasons:
◦ The networking configuration is intended to be managed by users with a role of Network
administrator. Because users with a role of Server administrator can create and edit
network sets, allowing network sets to be members of uplink sets could result in server
administrators changing the mapping of networks to uplink ports without the knowledge
of the network administrator.
◦ Because a network can be a member of more than one network set, allowing network
sets to be members of uplink sets would make it more difficult to ensure that no single
network is a member of more than one uplink set, especially as the network set
configurations change over time.
Stacking modes
Stacking modes and stacking links apply to Ethernet networks only.
Interconnects that are connected to one another through stacking links create a stacking mode.
Ethernet traffic from a server connected to an interconnect downlink can reach the data center
networks through that interconnect or through a stacking link from that interconnect to another
interconnect.
The supported stacking mode is enclosure. For this stacking mode:
•
All the interconnects in the enclosure form a single logical interconnect.
•
Stacking links between interconnects in different enclosures are not supported.
•
When two interconnects of the same type are installed in horizontally adjacent enclosure I/O
bays, they connect through internal stacking links.
•
Installing interconnects of different types in horizontally adjacent enclosure I/O bays is not
supported.
Stacking health
The appliance detects the topology within an enclosure of the connections between interconnects
and the uplink sets, and determines the redundancy of paths between servers and data center
networks. The appliance reports redundancy information as the stacking health of the logical
interconnect, which is one of the following:
144 Managing interconnects, logical interconnects, and logical interconnect groups