Installation guide

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Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
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Chapter 3 Installing the IGX
Making Frame Relay Connections
Y-cable redundancy is not allowed between different line types, such as a UFI-8T1-DB-15 and a
UFI-8E1-DB-15. The dspyred command display shows any conflict in reverse video. (See the
descriptions of the upln (or upcln) and upfrport commands in the Cisco WAN Switching Command
Reference.)
The commands that relate to Y-cable redundancy are addyred, delyred, dspyred, and ptyred. After you
have installed the cards in adjacent slots and connected the cables, use the addyred command to direct
the node to recognize the card redundancy. See the Cisco WAN Switching Command Reference for
descriptions of the commands.
Figure 3-15 Y-Cable Redundancy with Single- and Dual-Port Cabling
Y-cable
Y-cable
Standard
cable
Standard cable with
2 ports (cab2-)
UFI-4HSSI, UFI-12V.35, or UFI-12X.21
UFI-12X.21 or UFI-12V.35
H10047