Understanding Node Groups; Network Node Groups; Server Node Groups - Juniper QFabric QFX3000-G Hardware Documentation

QFX3000-G QFabric System Hardware Documentation

Understanding Node Groups

Network Node Groups

Server Node Groups

22
Understanding the QFabric System Control Plane
Understanding the QFabric System Hardware Architecture on page 7
Node groups help you combine multiple Node devices into a single virtual entity within
the QFabric system to enable redundancy and scalability at the edge of the data center.
Network Node Groups on page 22
Server Node Groups on page 22
A set of one or more Node devices that connect to an external network is called a network
Node group. The network Node group also relies on two external Routing Engines running
on the Director group. These redundant network Node group Routing Engines run the
routing protocols required to support the connections from the network Node group to
external networks.
When configured, the Node devices within a network Node group and the network Node
group Routing Engines work together in tandem as a single entity. By default, network
Node group Routing Engines are part of the
devices are included in the group. As a result, you must configure Node devices to be part
of a network Node group.
In a QFabric system deployment that requires connectivity to external networks, you can
modify the automatically generated network Node group by including its preset name
NW-NG-0 in the Node group configuration. Within a network Node group, you can include
a minimum of one Node device up to a maximum of eight Node devices. By adding more
Node devices to the group, you provide enhanced scalability and redundancy for your
network Node group.
NOTE: The QFabric system creates a single
for the default partition. You cannot configure a second network Node group
inside the default partition. The remaining Node devices within the default
partition are reserved to connect to servers, storage, or other endpoints
internal to the QFabric system. These Node devices either can be retained in
the automatically generated server Node groups or can be configured as part
of a redundant server Node group.
A server Node group is a set of one or more Node devices that connect to servers or storage
devices. Unlike Node devices that are part of a network Node group and rely on an external
Routing Engine, a Node device within a server Node group connects directly to endpoints
and implements the Routing Engine functions locally, using the local CPU built into the
Node device itself.
NW-NG-0 network Node group but no Node
NW-NG-0 network Node group
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