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Installation Prerequisites
ciscoBus Port Limitations
The CSC-MEC card will operate with any other ciscoBus interface cards; however, buffering and
switching demands on the ciscoBus controller and processor card limit the number of interfaces that
can be mixed without impeding performance of the high-speed ciscoBus interfaces.
The maximum numbers of CSC-MEC ports (interfaces) that can be combined with other ciscoBus
ports are listed in Table 4. These limits are for both first- and second-generation ciscoBus systems.
(For first-generation systems, disregard the C2FCIT and C2CTR ports.)
The number of cards needed for the maximum number of ports is also listed (in parentheses).
Exceeding these maximum limits may impede performance on any or all installed ciscoBus
interfaces.
Table 4
(C2)MEC
Ports (Cards)
24
18
18
18
12
12
12
12
12
12
6
6
6
6
6
6
6
6
6
0
0
0
0
0
0
0
0
0
12 Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards
Maximum Port and Card Configurations for ciscoBus Interface Cards
C2FCIT/(C2)FCI
(C2)HSSI
Ports (Cards)
Ports (Cards)
(4)
0
(0)
0
(3)
1
(1)
0
(3)
0
(0)
1
(3)
0
(0)
0
(2)
2
(2)
0
(2)
1
(1)
1
(2)
1
(1)
0
(2)
0
(0)
2
(2)
0
(0)
1
(2)
0
(0)
0
(1)
1
(1)
0
(1)
0
(0)
1
(1)
3
(3)
0
(1)
0
(0)
3
(1)
2
(2)
1
(1)
2
(2)
0
(1)
0
(0)
2
(1)
1
(1)
1
(1)
1
(1)
2
(0)
3
(3)
0
(0)
2
(2)
1
(0)
1
(1)
2
(0)
0
(0)
3
(0)
4
(4)
0
(0)
3
(3)
1
(0)
2
(2)
2
(0)
1
(1)
3
(0)
0
(0)
4
C2CTR
Ports (Cards)
(0)
0
(0)
(0)
0
(0)
(1)
0
(0)
(0)
4
(1)
(0)
0
(0)
(1)
0
(0)
(0)
4
(1)
(2)
0
(0)
(1)
4
(1)
(0)
8
(2)
(0)
6
(2)
(1)
6
(2)
(0)
0
(0)
(3)
0
(0)
(1)
0
(0)
(0)
4
(1)
(2)
4
(1)
(1)
4
(1)
(2)
0
(0)
(0)
2
(1)
(1)
2
(1)
(2)
2
(1)
(3)
2
(1)
(0)
0
(0)
(1)
0
(0)
(2)
0
(0)
(3)
0
(0)
(4)
0
(0)
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