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Installing and Maintaining BN Platforms
5-8 109352-E Rev. A
When removing or installing a link module, keep the following in mind:
If you replace a link module with another of a different type (that is, you
replace an Ethernet link module with an FDDI link module), you must first
undo the configuration of all circuits on the old slot before the hardware
platform software can properly configure the new module. Refer to
Configuring Routers (router software) or Getting Started with Site Manager
(BayStream Software) for instructions on deleting and editing a configuration
file.
When you remove a link module, connectivity to the slot in question and the
services that slot provides become disrupted. The other routing engine
processor modules resynchronize their routing tables after the slot fails to
receive packets.
Insert ARE link modules only in slots opposite ARE processor modules. Do
not install an ARE link module in a slot opposite a FRE or FRE-2 processor
module.
The SRM-L and SRM-F (see next section) each supply two backbones. This
means that two backbones become inactive if you remove one of these
modules, and four backbones become inactive if you remove both. When you
insert a module, its associated backbones become active.
Before removing or installing a link module, first access the interior of your
hardware platform. (Refer to Chapter 4, “Accessing the Interior,” for
instructions.)
The procedures for replacing the link modules and SRM-Ls are the same for the
BLN, BLN-2, and BCN. (Refer to Figure 5-3 for the BLN, Figure 5-4 for the
BLN-2, and Figure 5-5 for the BCN.)
Caution: Electrostatic discharge can damage hardware. Use the antistatic
wrist strap when handling any hardware platform components.
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