NEC SL1100, Сетевое руководство

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NEC SL1100 Issue 6.0
Networking Manual 13 - 3
S
ECTION
2
S
YSTEM
C
APACITY
SL Net allows a maximum of five systems to be networked together without
exceeding a maximum of
168 ports ( below Version 3500 ) or 256 ports ( Version
3500 and above) in the entire network. The 168 port capacity ( below Version 3500 )
or 256 ports ( Version 3500 and above ) is a sum of station and trunk ports in all
nodes. When the capacity is exceeded, all systems will enter a standalone mode and
will not be able to communicate with each other. At this point the systems can only
utilize resources within their own location. Below is an example showing a network
that exceeds the 168 port maximum capacity when site 5 is added to the network.

With Version 3500 or higher the maximum capacity has increased to 256. The below
example is showing a system that has a version lower than Version 3500 .
When the capacity is exceeded, an alarm report is generated and the message “SL
Net port over” is displayed on an operator phone. To restore the network, so all
systems can communicate with each other, the system totals need to be brought
below the
168 ports ( below Version 3500 ) or 256 port ( Version 3500 and above )
maximum. After the necessary ports (station or trunk) are removed from a system, a
restart of the SL1100 is required. Every time a system in an SL Net network is reset,
a port count is performed. If the network port count is below
168 ports ( below
Version 3500 ) or 256 port ( Version 3500 and above ), all systems are allowed to
communicate.

InMail ports are not counted against the 168 port ( below Version 3500 ) or 256 port ( Version
3500 and above ) maximum capacity.
Figure 13-1 System Capacity Diagram