Installing the Router 3-19
Connecting Interface Cables
Figure 3-15 Dual Attach Station (DAS), Single-Mode Fiber Network Connections
• Multimode—Each of the integrated transmit/receive multimode interface cables attaches to both
the primary and secondary ring; each one receives the signal from one ring and transmits to the
other ring. (See Figure 3-16.) To help avoid confusion, use the receive label on the cable MIC
connector as a key and connect the cables to the FIP ports as follows:
— Connect the cable coming in from the primary ring to the PHYA receive port. This also
connects the signal going out to the secondary ring to the PHYA transmit port.
— Connect the cable coming in from the secondary ring to the PHY B receive port. This also
connects the signal going out to the primary ring to the PHY B transmit port.
Figure 3-16 Dual Attach Station (DAS), Multimode Fiber Network Connections
• Mixed mode—Follow the cabling guidelines described previously to connect the multimode and
single-mode interface cables. Figure 3-17 shows that the primary ring signal is received on the
multimode PHYA receive port and transmitted from the single-mode PHY B transmit port. Your
configuration may be the opposite, with multimode on PHY B and single-mode on PHYA.
Connect the cables to the FIP ports as follows:
— Connect the cable coming in from the primary ring to the PHYA receive port, and connect
the signal going out to the secondary ring to the PHYA transmit port.
— Connect the cable coming in from the secondary ring to the PHY B receive port. This also
connects the signal going out to the primary ring to the PHY B transmit port.
TX RX TX RX
PHY B PHY A
H2808
To primary ring
From secondary ring
To secondary ring
From primary ring
IP
Single-mode,
dual attachment.
Use four single-mode
cables for a dual
attachment connection.
FC connectors (4)
TX RX
PHY B PHY A
TX RX
H2809
To primary ring
From secondary ring
FIP
Multimode,
dual attachment.
Use two multimode
cables for a dual
attachment connection.
MIC MIC
From primary ring
To secondary ring
To Next Page
Loading...
