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Catalyst GigaStack Gigabit Interface Converter Hardware Installation Guide
78-6460-04
Chapter 2 Installation
Creating Connections
Note The GigaStack GBIC supports setting a trunk to IEEE 802.1Q or Inter-Switch
Link (ISL) encapsulation. All GigaStack GBIC interfaces in the cascaded stack
should be configured as trunk interfaces (switchport mode trunk interface
configuration command) and to use the same encapsulation method (switchport
trunk encapsulation {isl | dot1q} interface configuration command). For more
information on these commands, refer to the command reference for your switch.
For more information, see the “Point-to-Point Connections” section on page 2-10,
the “Cascaded Stack Connections” section on page 2-11, and the “Cascaded Stack
Connections with a Redundant Link” section on page 2-12.
Table 2-1 Available GBIC Ports in a Point-to-Point Configuration
Device
Available GigaStack
GBIC Ports
1000BASE-X module (for modular
2900 XL switches)
2
3500 XL switches 2
2950 switches 2
3550 multilayer switches 2