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Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
Chapter 22 Configuring Generation 2 and Generation 3 Switching Modules
Configuring Module Interface Shared Resources
See the “About Interface Modes” section on page 20-3.
Note ISL ports cannot operate in shared rate mode.
4. Configure the rate mode (dedicated or shared) to use.
See the “Configuring Rate Mode” section on page 22-33.
5. Configure the traffic speed (1 Gbps, 2 Gbps, 4 Gbps, or autosensing with a maximum of 2 Gbps or
4 Gbps) to use.
See the “Configuring Port Speed” section on page 22-32.
Configuration Guidelines for 12-Port 4-Gbps Switching Module Interfaces
The 12-port 4-Gbps switching modules support the following features:
• 1-Gbps, 2-Gbps, and 4-Gbps speed traffic
• Only dedicated rate mode
• ISL (E or TE) and Fx (F or FL) port modes
• Extended BB_credits
• Performance buffers
To configure 4-port 10-Gbps switching modules when starting with the default configuration, follow
these guidelines:
1. Configure the traffic speed (1 Gbps, 2 Gbps, 4 Gbps, or autosensing with a maximum of 2 Gbps or
4 Gbps) to use.
See the “Configuring Port Speed” section on page 22-32.
2. Configure the port mode.
See the “About Interface Modes” section on page 20-3.
3. Configure the BB_credits, performance buffers, and extended BB_credits, as necessary.
See the “BB_Credit Buffers for Switching Modules” section on page 22-13, “BB_Credit Buffers for
Fabric Switches” section on page 22-22, and the “Extended BB_Credits” section on page 22-23.
Note If you change the port bandwidth reservation parameters on a 48-port or 24-port module, the change
affects only the changed port. No other ports in the port group are affected.
Configuration Guidelines for 4-Port 10-Gbps Switching Module Interfaces
The 4-port 10-Gbps switching modules support the following features:
• Only 10-Gbps speed traffic
• Only dedicated rate mode
• ISL (E or TE) and F port modes
• Extended BB_credits
• Performance buffers