Example 4: Fddi Module With Other Modules - 3Com corebuilder 3500 Implementation Manual

Example 4: FDDI
Module with Other
Modules
An FDDI module has six FDDI ports (two rows of three ports). Figure 9
shows an FDDI module in slot 1. The top row's ports are numbered 1
through 3 and the bottom row's ports are numbered 4 through 6. Slots 2
and 3 have 10/100 Fast Ethernet modules, and Slot 4 has a Gigabit
Ethernet module.
When two FDDI ports are configured as a dual-attach station (DAS) pair,
there is one bridge port using two physical (fiber) connectors. The anchor
port is the A-port of the DAS port pair. If you configure two FDDI ports as
a DAS pair, you must specify the lowest-numbered (anchor) port in the
DAS pair and the other port in the pair becomes unselectable.
For example, for the FDDI module shown in slot 1, the three configurable
DAS pairs have ports 1 and 4, ports 2 and 5, and ports 3 and 6. When
specifying bridge ports (for example, for VLANs), you specify port 1 to
represent the first DAS pair, port 2 to represent the second DAS pair, and
port 3 to represent the third DAS pair. For more information about FDDI
configurations, see Chapter 6.
Figure 9 Port Numbering for a System with an FDDI Module
Slot 1
(FDDI ports 1-6)
R
R N S
PWR RUN
FDDI MMF
A1
3C35410 L
E
T
PWR
B4
L
INS
E
ERR
T
100 BASE - TX
1X 2X
3C54321
L E T L E T L E T
PWR
INS
ERR
(10/100 ports 13-18)
Slot 2
(10/100 ports 7-12)
PCMCI
MODEM
INS
ERROR
SY INS PS PS FA TEMP SERVIC
100 BASE - TX
A2 A3
L L 3C54321
E E
L E T
T T
PWR
B5 B6
L L
INS
E E
ERR
T T
1000 BASE (GBIC)
3X 4X 5X 6X 3C35330
L E T L E T L E T
PWR
INS
ERR
Slot 3
(Gigabit Ethernet
Examples of Port Numbering
ETHERNET
TERMINAL
10BT
1X 2X 3X 4X 5X 6X
L E T L E T L E T L E T L E T
L
E
T
Slot 4
port 19)
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