Removing and Installing Service Adapters
This chapter describes how to remove the CSA from supported platforms and also how to install a new or replacement service adapter. This chapter contains the following sections:
•Handling Service Adapters
•Online Insertion and Removal
•Warnings and Cautions
•Service Adapter Removal and Installation
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.
When powering off the router, wait a minimum of 30 seconds before powering it on again.
Handling Service Adapters
Always handle the port or service adapter by the carrier edges and handle; never touch the port adapter components or connector pins. (See
Figure 3-1 Handling a Service 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 CSA on Cisco 7100 series routers, Cisco 7200 series routers, or Cisco uBR7200 series routers.
Although the VIP2 supports online insertion and removal, individual service and port adapters do not. To replace service and port adapters, you must first remove the VIP2 from the chassis and then install or replace service or port adapters as required. If a blank port adapter is installed on the VIP2 on which you want to install a new service or port adapter, you must first remove the VIP2 or from the chassis and then remove the blank port adapter.
To prevent system problems, do not remove service or port adapters from the VIP2 motherboard or attempt to install other service or port adapters on the motherboard when the system is operating. To install or replace service or port adapters, first remove the VIP2 or 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 "Service 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 service or port adapters.
Do not slide a service or 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 service or port adapter lever or other retaining mechanism does not move to the locked position, the service or port adapter is not completely seated in the midplane. Carefully pull the service or port adapter halfway out of the slot, reinsert it, and move the service or port adapter lever or other mechanism to the locked position.
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 service or 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.
Service Adapter Removal and Installation
In this section, the illustrations that follow give step-by-step instructions on how to remove and install service adapters. This section contains the following illustrations:
•Cisco 7200 Series—Removing and Installing a Service Adapter
•VIP2—Removing and Installing a Service Adapter
Note The CSA can be installed in port adapter slot 0 or slot 1 on a VIP2 motherboard; however, the CSA will only compress and decompress data passing through interfaces on the serial port adapter in the adjacent VIP2 port adapter slot.
The CSA can be installed in any available port adapter slot in a Cisco 7200 series chassis and will compress and decompress interfaces on serial port adapters installed in any other port adapter slot. The Cisco 7000 series, 7200 series, and 7500 series routers support multiple installed CSAs.
Cisco 7200 Series—Removing and Installing a Service Adapter
VIP2—Removing and Installing a Service Adapter