Cisco BPX 8650, Installation And Configuration Manual

Page: 235 / 606

13-11
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 13 Installing the BPX Switch Cards
Specifying Card Redundancy
Figure 13-7 Y-Cable Connection
Terminating connections is possible at only a primary slot and not at a secondary slot. For a description,
refer to the
addcon command of the Cisco WAN Switching Command Reference, Release 9.3.30 .
On multiport card sets, each primary port is connected by a Y-cable to a secondary (redundant) port.
Port 1 of the primary card set must be paired to port 1 of the secondary card set, and so forth. Figure 13-8
illustrates the cabling for a multiport card set.
Figure 13-8 Y-Cables on Multiple Ports
If the secondary card set becomes active, the primary card set goes into the standby state. For the primary
card set to serve as a backup, it must be a complete set and not have failed status.
User
equipment
(data)
Y cable
Active cards
Standby cards
Back
card
Front
card
S5837
Back
card
Front
card
SDI SDI
Port 1
Port 2
Port 3
Port 4
S5275