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AMF concepts
Page 14 | How to Configure and Use AMF on Allied Telesis Switches
nodes connected via regular AMF links will be part of a higher or lower domain depending
on whether they are closer to or further away from the core domain. Nodes within a
domain must be connected in either a chain or ring topology.
This means that a maximum of two crosslinks should be configured on any single node. The
advantage of an AMF domain is that two links from a domain to a single higher level domain
(closer to the core) will provide redundant AMF links. It is recommended that an AMF
domain should only be connected to a single higher level domain, though it may be
connected to multiple lower level domains.
It is recommended that:
The maximum number of nodes per domain is 12 for SBx8100, x908, x900, x610, and
x510.
Core distance
This is the distance (hop count) between a domain and the Core domain. The Core domain
has a Core distance of 0, and the maximum recommended Core distance in an AMF
network is 8.
Figure 1: AMF domains and Core distance
AMF
Master node
AMF
Master node
AMF
Member node
AMF
Member node
AMF
Member node
AMF
Member node
AMF
Member node
Node ID2
amf-crosslink
amf-link
Domain Controller
Backup Domain Controller
Node ID3
Node ID4
Node ID5
Node ID6
Node ID7
Node ID8
Node ID1
CORE DISTANCE 1
CORE DISTANCE 0
CORE DISTANCE 2
AMF
Member node