User guide

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98 PARAGON II USER GUIDE
In order to make a redundant configuration system operate more efficiently, the following
connection scheme between tiers is recommended:
Assume there are two UMT Base Units: UMT-Base 1 and UMT-Base 2
Assume there are three UMT second-tier devices: UMT-2A, UMT-2B, and UMT-2C
Channel connection of UMT-Base 1
Channel ports 3*N+1 (1, 4, 7….) connect to UMT-2A user ports sequentially,
starting from user port 1
Channel ports 3*N+2 (2, 5, 8….) connect to UMT-2B user ports sequentially,
starting from user port 1
Channel ports 3*N (3, 6, 9….) connect to UMT-2C user ports sequentially, starting
from user port 1
Channel connection of UMT-Base 2
Channel ports 3*N+1 (1, 4, 7….) connect to UMT-2A user ports sequentially,
starting from the available user port.
Channel ports 3*N+2 (2, 5, 8….) connect to UMT-2B user ports sequentially,
starting from the available user port.
Channel ports 3*N (3, 6, 9….) connect to UMT-2C user port sequentially, starting
from the available user port.
UMT
-
2A
UMT
-
2B
UMT
-
Base
1
UMT
-
2C
UMT
-
Base
2
UST
UST
UST
UST
Figure 93 Recommended Redundant Configuration Connection Scheme
Loop-Back Configuration
This dead-loop setup will cause Server database conflict and should therefore never be used.
UMT
UMT
Figure 94 Illegal Loop-Back Configuration