3-20
Cisco IOS XR Getting Started Guide
OL-10957-02
Chapter 3 Bringing Up the Cisco IOS XR Software on a Multishelf System
Integrated Switch System
Router#
The output of this command should display “connected.” If it does not, then the connector may have a
partial fiber cut or a bad optic. You may need to jiggle the GBIC wire to ensure that it is firmly inserted.
Re-enter the command show interface until the port displays a status of “connected” or “disabled” for
every port that displays a connector type.
Caution If this problem is not resolved and the Cisco CRS-1 router enters the forwarding state, a loop occurs.
Integrated Switch System
Integrated switches are two Gigabit Ethernet switches placed on system controller cards in the fabric
chassis. The system controller card is called 22-port shelf controller Gigabit Ethernet (22-port SCGE),
because it contains 22 ports on the front panel.
Each 22-port SCGE card provides 22 Gigabit Ethernet (GE) links, which are used to interconnect control
network connections of the different Cisco CRS-1 chassis.
Note When the 22-port SCGE cards are installed, there is no requirement for an external switch device
(Catalyst 6509) to provide control Ethernet connectivity.
For information about the cabling schemes for a single-FCC multishelf system, two-FCC multishelf
system, and four-FCC multishelf system, see Cisco CRS-1 Carrier Routing System Multishelf System
Interconnection and Cabling Guide.
This section includes the following topics:
• Prerequisites for an Integrated Switch System, page 3-20
• Restrictions for an Integrated Switch System, page 3-21
• Before You Begin, page 3-21
• Information About the Integrated Switch Implementation, page 3-21
• Implementing the Integrated Switch System, page 3-23
Prerequisites for an Integrated Switch System
The following prerequisites are presented for the integrated switch system:
• Software Requirements, page 3-20
• Hardware Requirements, page 3-21
Software Requirements
• Requires ROMMON 1.43 or higher on all RP and 22-port SCGE nodes. The 22-port SCGE card
comes with ROMMON 1.43 or later version.
Note ROMMON 1.43 is the first ROMMON version to support 22-port SCGE cards and other cards.
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