Bridge GUI Guide: Introduction
10
separated from the MBG will be temporarily disconnected from
the hierarchical network. Multiple MBGs can enable parts of the
mesh temporarily separated from each other to remain
connected to a hierarchical network, as long as there is an
MBG present among the separated group of nodes.
1.4.1.4
Bridging Loops in FastPath Mesh Networks
Bridging loops can form only when FastPath Mesh Points are
connected over both Core and Access interfaces.
In FastPath Mesh Networks with single MBG attachment points
to the hierarchical network, such as those shown in Figure 1.4,
simultaneous Core and Access connections are not present,
and bridging loops cannot form. Although the two MBGs are
connected to the same LAN by their Access interfaces, they
are MPs in different FP Mesh networks and so are not also
connected by Core interfaces.
Figure 1.4. Two FP Mesh Networks, One MBG Attachment Point Each, Connected to a Single Access Network
When a FastPath Mesh network is attached to a hierarchical
network by two (or more) Mesh Border Gateways, the Mesh
Points serving these roles are connected to each other both by
their Core interfaces and by the Access interfaces connecting
them to the hierarchical network. FastPath Mesh detects and
prevents the loop that would otherwise form over these
connections:
Among the many MPs that detect a loop, only the MP with
the lowest MAC address will forward mesh traffic received
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