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3-3
PA-T3+ Serial Port Adapter Installation and Configuration
OL-3505-03
Chapter 3 Removing and Installing Port Adapters
Warnings and Cautions
Each module has a bus connector that connects it to the router. The connector has a set of tiered pins in
three lengths that send specific signals to the system as they make contact with the module. The system
assesses the signals it receives and the order in which it receives them to determine if a module is being
removed from or introduced to the system. From these signals, the system determines whether to
reinitialize a new interface or to shut down a disconnected interface.
Specifically, when you insert a module, the longest pins make contact with the module first, and the
shortest pins make contact last. The system recognizes the signals and the sequence in which it receives
them.
When you remove or insert a module, the pins send signals to notify the system of changes. The router
then perfoms the following procedure:
1. Rapidly scans the system for configuration changes.
2. Initializes newly inserted port adapters or administratively shuts down any vacant interfaces.
3. Brings all previously configured interfaces on the module back to their previously installed state.
Any newly inserted interface is put in the administratively shutdown state, as if it was present (but
not configured) at boot time. If a similar module type is reinserted into a slot, its ports are configured
and brought online up to the port count of the originally installed module of that type.
Note Before you begin installation, read Chapter 2, “Preparing for Installation” for a list of parts and tools
required for installation.
Warnings and Cautions
Observe the following warnings and cautions when installing or removing port adapters.
Caution Do not slide a port adapter all the way into the slot until you have connected all required cables. Trying
to do so disrupts normal operation of the router or switch.
Note If a port adapter lever or other retaining mechanism does not move to the locked position, the port
adapter is not completely seated in the midplane. Carefully pull the port adapter halfway out of the slot,
reinsert it, and move the port adapter lever or other mechanism to the locked position.
Caution To prevent jamming the carrier between the upper and the lower edges of the port adapter slot, and to
ensure that the edge connector at the rear of the port adapter mates with the connection at the rear of the
port adapter slot, make certain that the carrier is positioned correctly, as shown in the cutaway in the
following illustrations.
Warning
When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the
card. Some platforms have an ESD connector for attaching the wrist strap. Do not directly touch the
midplane or backplane with your hand or any metal tool, or you could shock yourself.
- Configuration 1
- CONTENTS 3
- 4 Configuring the PA-T3+ 4-1 4
- Contents 5
- Objectives 7
- Organization 8
- Related Documentation 8
- Obtaining Documentation 10
- Cisco.com 11
- Technical Assistance Center 11
- Cisco TAC Website 12
- Cisco TAC Escalation Center 12
- OL-3505-03 13
- Overview 15
- Features 16
- 1DS3+ SERIAL 17
- 2DS3+ SERIAL 17
- Cables and Connectors 18
- Management Information Base 19
- Chapter 1 Overview 20
- Port adapter slot 21
- RX CELLS 22
- RX CARRIER 22
- RX ALARM 22
- VIP Slot Numbering 23
- VIP Interface Addresses 27
- Preparing for Installation 29
- Safety Guidelines 31
- Waarschuwing 32
- Varoitus 32
- Attention 33
- Figyelem! 33
- Avvertenza 33
- Advarsel 34
- ¡Advertencia! 34
- Varning! 34
- Telephone Wiring Guidelines 37
- Handling Port Adapters 39
- Online Insertion and Removal 40
- Warnings and Cautions 41
- Cisco 7200 44
- Connecting a Serial Cable 50
- Configuring the PA-T3+ 53
- Configuring the Interfaces 54
- Setting the Clock Rate 61
- Inverting the Clock Signal 62
- Inverting the Data Signal 62
- Configuring NRZI Format 63
- Table 4-6 CRC Commands 64
- Setting the Bandwidth 67
- Defining the DSU Mode 67
- Checking the Configuration 68
- Table 4-8 Using show Commands 69
- Cisco 7200 Series Routers 71
- Cisco 7401ASR Routers 72
- Using the show diag Command 73
- Using loopback Commands 77
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