PA-2H Dual-Port HSSI Port Adapter Installation and Configuration
Removing and Installing the PA-2H Dual-Port HSSI Port Adapter
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Removing and Installing Port Adapters

Table Of Contents

Removing and Installing Port Adapters

Handling Port Adapters

Online Insertion and Removal

Warnings and Cautions

Port Adapter Removal and Installation

Catalyst RSM/VIP2—Removing and Installing a Port Adapter

Catalyst 6000 Family FlexWAN Module—Removing and Installing a Port Adapter

Cisco 7100 Series—Removing and Installing a Port Adapter

Cisco 7200 Series—Removing and Installing a Port Adapter

Cisco uBR7200 Series—Removing a Port Adapter

Cisco uBR7200 Series—Installing a Port Adapter

Cisco 7301 Router—Removing and Installing a Port Adapter

Cisco 7304 PCI Port Adapter Carrier Card—Removing and Installing a Port Adapter

Cisco 7401ASR Router—Removing and Installing a Port Adapter

VIP—Removing and Installing a Port Adapter

Connecting PA-2H Interface Cables

Connecting the HSSI Cables

Connecting a Null Modem Cable


Removing and Installing Port Adapters


This chapter describes how to remove the PA-2H port adapter from supported platforms, how to install a new or replacement port adapter, and how to connect cables. This chapter contains the following sections:

Handling Port Adapters

Online Insertion and Removal

Warnings and Cautions

Port Adapter Removal and Installation

Connecting PA-2H Interface Cables

Each port adapter circuit board is mounted to a metal carrier and is sensitive to electrostatic discharge (ESD) damage.


Note When a port adapter slot is not in use, a blank port adapter must fill the empty slot to allow the router or switch to conform to electromagnetic interference (EMI) emissions requirements and to allow proper airflow across the port adapters. If you plan to install a new port adapter in a slot that is not in use, you must first remove the blank port adapter.



Caution When powering off the router, wait a minimum of 30 seconds before powering it on again.

Handling Port Adapters


Caution Always handle the port adapter by the carrier edges and handle; never touch the port adapter components or connector pins. (See Figure 3-1.)

Figure 3-1 Handling a Port Adapter

Online Insertion and Removal

Several platforms support online insertion and removal (OIR) of port adapters; therefore, you do not have to power down routers when removing and replacing a PA-2H on Cisco 7100 series routers, Cisco 7200 series routers, Cisco uBR7200 series routers, Cisco 7301 routers, or Cisco 7401ASR routers.

Although the Cisco 7304 PCI Port Adapter Carrier Card, the VIP, the Catalyst 6000 family FlexWAN module, and the Catalyst RSM/VIP2 support online insertion and removal, individual port adapters do not. To replace port adapters, you must first remove the Cisco 7304 PCI Port Adapter Carrier Card, the VIP, the Catalyst 6000 family FlexWAN module, or Catalyst RSM/VIP2 from the chassis and then install or replace port adapters as required. If a blank port adapter is installed on the Cisco 7304 PCI Port Adapter Carrier Card, the VIP, the Catalyst 6000 family FlexWAN module, or Catalyst RSM/VIP2 on which you want to install a new port adapter, you must first remove the Cisco 7304 PCI Port Adapter Carrier Card, the VIP, the Catalyst 6000 family FlexWAN module, or Catalyst RSM/VIP2 from the chassis and then remove the blank port adapter.


Caution To prevent system problems, do not remove port adapters from the Cisco 7304 PCI Port Adapter Carrier Card, the VIP, the Catalyst 6000 family FlexWAN module, or Catalyst RSM/VIP2 motherboard or attempt to install other port adapters on the motherboard when the system is operating. To install or replace port adapters, first remove the Cisco 7304 PCI Port Adapter Carrier Card, the VIP, the Catalyst 6000 family FlexWAN module, or Catalyst RSM/VIP2 from its interface processor slot.

It is wise to gracefully shut down the system before removing a port adapter that has active traffic moving through it. Removing a module while traffic is flowing through the ports can cause system disruption. Once the module is inserted, the ports can be brought back up.


Note As you disengage the module from the router or switch, online insertion and removal (OIR) administratively shuts down all active interfaces in the module.


OIR allows you to install and replace modules while the router is operating; you do not need to notify the software or shut down the system power, although you should not run traffic through the module you are removing while it is being removed. OIR is a method that is seamless to end users on the network, maintains all routing information, and preserves sessions.

The following is a functional description of OIR for background information only; for specific procedures for installing and replacing a module in a supported platform, refer to the "Port Adapter Removal and Installation" section.

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.


Port Adapter Removal and Installation

In this section, the illustrations that follow give step-by-step instructions on how to remove and install port adapters in each of the following supported platforms:

Catalyst RSM/VIP2—Removing and Installing a Port Adapter

Catalyst 6000 Family FlexWAN Module—Removing and Installing a Port Adapter

Cisco 7100 Series—Removing and Installing a Port Adapter

Cisco 7200 Series—Removing and Installing a Port Adapter

Cisco uBR7200 Series—Removing a Port Adapter

Cisco uBR7200 Series—Installing a Port Adapter

Cisco 7301 Router—Removing and Installing a Port Adapter

Cisco 7304 PCI Port Adapter Carrier Card—Removing and Installing a Port Adapter

Cisco 7401ASR Router—Removing and Installing a Port Adapter

VIP—Removing and Installing a Port Adapter

Catalyst RSM/VIP2—Removing and Installing a Port Adapter

Catalyst 6000 Family FlexWAN Module—Removing and Installing a Port Adapter

Cisco 7100 Series—Removing and Installing a Port Adapter

Cisco 7200 Series—Removing and Installing a Port Adapter

Cisco uBR7200 Series—Removing a Port Adapter

Cisco uBR7200 Series—Installing a Port Adapter

Cisco 7301 Router—Removing and Installing a Port Adapter

Cisco 7304 PCI Port Adapter Carrier Card—Removing and Installing a Port Adapter

You can install one single-width port adapter in a Cisco 7304 PCI Port Adapter Carrier Card. This section provides step-by-step instructions for removing and installing a port adapter in a Cisco 7304 PCI Port Adapter Carrier Card.


Warning When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the Cisco 7304 PCI Port Adapter Carrier 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.


To remove and install a port adapter in a Cisco 7304 PCI Port Adapter Carrier Card, refer to Figure 3-2 and do the following:


Step 1 If the Cisco 7304 PCI Port Adapter Carrier Card is still in the router, you must remove the Cisco 7304 PCI Port Adapter Carrier Card before removing a port adapter.

Step 2 To remove the port adapter from the Cisco 7304 PCI Port Adapter Carrier Card, turn the port adapter lock from its locked and horizontal position shown in A of Figure 3-2 to its unlocked and vertical position shown in B of Figure 3-2.

Step 3 Grasp the handle of the port adapter and pull the port adapter from the Cisco 7304 PCI Port Adapter Carrier Card. (You have already disconnected the cables from the port adapter when removing the Cisco 7304 PCI Port Adapter Carrier Card).

Step 4 To insert the port adapter in the Cisco 7304 PCI Port Adapter Carrier Card, locate the guide rails inside the Cisco 7304 PCI Port Adapter Carrier Card that hold the port adapter in place. They are at the top left and top right of the port adapter slot and are recessed about an inch, as shown in C of Figure 3-2.

Step 5 Carefully slide the port adapter in theCisco 7304 PCI Port Adapter Carrier Card until the port adapter makes contact with the port adapter interface connector. When fully seated, the port adapter front panel should be flush with the face of the Cisco 7304 PCI Port Adapter Carrier Card.

Step 6 After the port adapter is properly seated, turn the port adapter lock to its locked and horizontal position, as shown in A of Figure 3-2.


Figure 3-2 illustrates how to remove and install a port adapter in a Cisco 7304 PCI Port Adapter Carrier Card.

Figure 3-2 Cisco 7304 PCI Port Adapter Carrier Card—Port Adapter Removal and Installation

Cisco 7401ASR Router—Removing and Installing a Port Adapter

VIP—Removing and Installing a Port Adapter

Connecting PA-2H Interface Cables

This section describes the procedures for connecting HSSI cables and null modem cables to the PA-2H.

Connecting the HSSI Cables

This section describes the procedure for connecting HSSI cables to a PA-2H port adapter.

On a single PA-2H, you can use up to two HSSI connections. HSSI cables are available only from Cisco Systems; they are not available from outside commercial cable vendors.


Caution Although the HSSI connector and the HSSI cable are similar to the SCSI-II format, they are not identical. The HSSI cable specification is more restrictive than that for the SCSI-II. If a SCSI-II cable is used instead of an HSSI cable, proper operation cannot be guaranteed

Use the following procedure to connect HSSI cables to a PA-2H:


Step 1 Attach the HSSI cable directly to each port on the PA-2H. (See Figure 3-3.)


Note Port adapters have a handle attached, but this handle is not shown in Figure 3-3. The HSSI cable plug and HSSI port receptacle are keyed for proper connection. Use the HSSI cable strain relief slide locks whenever HSSI cables are connected to the receptacles on the PA-2H.


Figure 3-3 Connecting HSSI Cables—Front View, PA-2H Shown Without Handle

Step 2 Attach the network end of your HSSI cables to your T3, E3, or SONET DSU, or other external HSSI equipment.


This completes the procedure for attaching HSSI cables to the PA-2H. If you require a null modem cable for your HSSI connection, see the "Connecting a Null Modem Cable" section that follows; otherwise, proceed to the Chapter 4, "Configuring the PA-2H."

Connecting a Null Modem Cable

This section describes the procedure for connecting a null modem cable to a PA-2H port adapter.

The null modem cable can connect two routers directly back to back. The two routers must be in the same location, and can be two Cisco 7000 series routers, two Cisco 7100 series routers, two Cisco 7200 series routers, two Cisco uBR7200 series routers, two Cisco 7301 routers, two Cisco 7304 routers, two Cisco 7401ASR routers, two Cisco 7500 series routers, or one of each. In this setup, you can verify the operation of the HSSI or to directly link the routers in order to build a larger node. The null modem cable uses the same 50-pin connectors as the HSSI cable, but uses the pinouts listed in Table 1-3 in the "HSSI Null Modem Cable" section on page 1-5.

To connect two routers, attach a null modem cable between an HSSI port on each router. Enable the internal transmit clock in both routers by entering the command hssi internal-clock. All router platforms use the same hssi internal-clock command to enable the internal transmit clock on the HSSI.

You define Cisco 7000 series and Cisco 7500 series interfaces by type and interface-processor-slot-number/port-adapter-slot-number/interface-port locations. You define Cisco 7100 series, Cisco 7200 series, Cisco uBR7200 series, Cisco 7301 router, Cisco 7304 router and Cisco 7401ASR router interfaces by type and port-adapter-slot-number/interface-port locations. You define the Catalyst RSM/VIP2 in Catalyst 5000 family switches by port-adapter-slot-number/interface-port locations. (The output of the show interfaces command displays the logical unit number on all supported platforms and the interface-processor-slot-number/port-adapter-slot-number/interface-port location in the Cisco 7000 series and Cisco 7500 series, or the port-adapter-slot-number/interface-port location in the Cisco 7100 series, Cisco 7200 series, Cisco 7301 router, Cisco 7304 router, Cisco 7401ASR router, and Cisco uBR7200 series routers, and the Catalyst RSM/VIP2.)


Note In the Cisco 7206 and Cisco 7206VXR router shelves, you define interfaces by type and physical-shelf/port-adapter/port locations. For information on Cisco 7206 and Cisco 7206VXR router shelf physical port addresses, see the "Identifying Interface Addresses" section on page 1-13 in Chapter 1.


The following examples show the configuration commands needed to prepare for a null modem cable connection in all supported platforms:

Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# 
 
Enter configuration commands...

For Cisco 7000 series and Cisco 7500 series routers with VIP:

Router(config)# interface hssi 1/0/0
Router(config-if)# hssi internal-clock 
Router(config-if)# Ctrl-Z 

For Catalyst 5000 family switches with Catalyst RSM/VIP2:

Router(config)# interface hssi 0/0
Router(config-if)# hssi internal-clock 
Router(config-if)# Ctrl-Z 

For Catalyst 6000 family switches with Catalyst 6000 FlexWAN module:

Router(config)# interface hssi 3/0/0
Router(config-if)# hssi internal-clock 
Router(config-if)# Ctrl-Z 

For Cisco 7100 series:

Router(config)# interface hssi 3/0 
Router(config-if)# hssi internal-clock 
Router(config-if)# Ctrl-Z

For Cisco 7200 series, Cisco uBR7200 series, Cisco 7301 routers, Cisco 7304 routers, and Cisco 7401ASR routers:

Router(config)# interface hssi 1/0 
Router(config-if)# hssi internal-clock 
Router(config-if)# Ctrl-Z

Note For the Cisco 7206 and Cisco 7206VXR router shelves, the interface address specified in the Cisco 7200 series example above would be preceded by a shelf number. For example, the command interface hssi 5/1/0 specifies the first interface of the port adapter in slot 1 of Cisco 7206 or Cisco 7206VXR router shelf 5.


Be sure to configure the HSSI port on both routers for an internal transmit clock. When the internal clock is enabled, the TC LED on the PA-2H goes on. When the internal clock is enabled in both routers, the TC and RC LEDs on both of the connected HSSI ports go on.

When you disconnect the null modem cable, you must also disable the internal transmit clock with the command no hssi internal-clock. Use this command to turn off the transmit clock for each interface on both routers.

This completes the procedure for attaching a null modem cable to your PA-2H.

Proceed to Chapter 4, "Configuring the PA-2H."