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Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 1 Shelf and Backplane Hardware
1.5 Electrical Interface Assemblies
You can replace the AIP on an in-service system without affecting traffic (except Ethernet traffic on
nodes running a software release earlier than Release 4.0). The cir cuit repair feature allows you to repair
circuits affected by MAC address changes on one node at a time. Circuit repair works when all nodes are
running the same software version. Each individual AIP upgrade requires an individual circuit repair; if
AIPs are replaced on two nodes, the circuit repair must be performed twice.
Caution Do not use a 2-A AIP with a 5-A fan-tray assembly; doing so causes a blown fuse on the AIP.
Note Ensure that all nodes in the affected network are running the sam e software version before replacing the
AIP and repairing circuits. If you need to upgrade nodes to the same software version, do not change any
hardware or repair circuits until after the software upgrade is complete. Replace an AIP during a
maintenance window. Resetting the active TCC2/TCC2P card can cause a service disruption of less then
50 ms to optical or electrical traffic. Resetting the active TCC2/TCC2P card causes a service disruption
of three to five minutes on all E-Series Ethernet traffic due to spanning tree reconvergence. Refer to the
Cisco ONS 15454 Troubleshooting Guide for an AIP replacement procedure.
1.5 Electrical Interface Assemblies
Optional EIA backplane covers are typically preinstalled when ordered wi th the ONS 15454. EIAs must
be ordered when using DS-1, DS-3, DS3XM, or EC-1 cards. T his section describes each EIA.
Six different EIA backplane covers are available for the ONS 15454: BNC, High-Density BNC,
MiniBNC, SMB, AMP Champ, UBIC-H (Universal Backplane Interface Connector-Horizontal), and
UBIC-V (Vertical). If the shelf was not shipped with the correct EIA interface, you must order and install
the correct EIA.
EIAs are attached to the shelf assembly backplane to provide electrical interface cable connections. EIAs
are available with SMB and BNC connectors for DS-3 or EC-1 cards. EIAs are available with
AMP Champ connectors for DS-1 cards. You must use SMB EIAs for DS-1 twisted-pair cable
installation. UBIC-V EIAs have SCSI connectors. They are available for use with any DS-1, DS-3, or
EC-1 card, but are intended for use with high-densi ty electrical cards.
Note The MiniBNC EIAs only support cables using the Trompetor connectors for termination .
You can install EIAs on one or both sides of the ONS 15454 backplane in any combination (in other
words, AMP Champ on Side A and BNC on Side B or High-Density BNC on Side A and SMB on Side B,
and so forth). As you face the rear of the ONS 15454 shelf assembly, the right side is the A side and the
left side is the B side. The top of the EIA connector columns are labeled with the correspondin g slot
number, and EIA connector pairs are marked transmit (Tx) and receive (Rx) to correspond to transmit
and receive cables.
Note For information about EIA types, protection schemes, and card slots, see Chapter 7, “Card Protection.”