Specifications

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Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
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Chapter 2 Cisco IGX 8400 Series Cards
Service Modules
Standard Service Module Installation
Caution In order to contain electromagnetic interference (EMI) and radio frequency interference (RFI), and to
ensure desired airflow for adequate chassis cooling, install a blank faceplate in any back card slots where
no back card exists.
Except where noted, IGX service modules use a standard installation procedure (see Chapter 3,
“Installing the IGX” in the Cisco IGX 8400 Series Installation Guide).
Card Redundancy
Except where noted, you can configure the service module for 1:1 redundancy by installing a second,
identical card group in another slot. Use a Y-cable to connect the two redundant back cards, then use the
switch software addyred command to add Y-redundancy to the card’s configuration. See Figure 2-6 for
an illustration.
The hardware kits for this feature usually contain a second, duplicate card set, a set of Y-cables to
interconnect the two card sets, and any other pieces that apply to the card types. Y-cable redundancy is
not possible using back cards with different interfaces, such as an FRI T1 and FRI V.35.
Figure 2-6 Y-Cable Card Redundancy on the IGX
Standard Service Module Configuration
For specific information on advanced card configuration tasks, refer to the information for your specific
front card and back card combination, or to Chapter 3, “Installing the IGX” in the Cisco IGX 8400 Series
Installation Guide.
User
equipment
(data)
Y cable
Active cards
Standby cards
Back
card
Front
card
S5837
Back
card
Front
card