NEC Univerge SV8100 System Hardware Manual page 219

4-102
CHUYÊN CUNG CẤP TỔNG ĐÀI NEC
6.4.2.3 Group Formation
When a CD-ETIA determines that it is an Add-on blade due to
the lack of an IP address from the backplane, it sends a
broadcast P2P message (defined in separate documentation) to
all the CD-ETIA blades in the system until it receives an
acknowledge message from the Main blade.
The Main blade receiving this broadcast message will
acknowledge by sending port identification information to the
Add-on blade.
6.4.2.4 Port Number Determination
When a Main blade is initialized, the blade assigns the first eight
ports as port 1 ~ 8. When subsequent Add-on blades' broadcast
messages are received, the Main blade assigns port numbers
on a first-come, first-serve basis.
To have deterministic port assignment, it is recommended that
the Add-on blades be inserted sequentially starting with the
desired lower port numbers first.
When a blade is removed, the port numbers are not
automatically removed. The operator, however, can remove any
assignment by accessing the Main blade GUI.
Example:
Main blade is inserted in slot 3, one Add-on blade inserted in slot
5. Main blade has ports 1 ~ 8; Add-on blade has ports 9 ~ 16.
1. User inserts a new Add-on blade in slot 2.
The new blade gets assigned ports 17 ~ 24.
2. User removes Add-on blade and moves it to slot 6.
The re-inserted blade automatically gets ports 17 ~ 24 (9
~ 16 are unavailable).
3. User relocates the Main blade to slot 4.
None of the port numbers change. However, the
programming in Program 10-55 must be changed to
reflect this move.
User can erase the ports 9 ~ 16.
Then reinsert the blade in slot 6 to get ports 9 ~
16.
Installing the SV8100 Blades
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