Dell PowerConnect J-8208, Hardware Manual

Page: 42 / 276

A redundant J-EX8208 switch has one SF module.
Figure 10: SF Module in a J-EX8208 Switch
The SF module can be installed only in the slot labeled SF. The SF module is keyed so
that it does not fit in the other slots in the chassis. See “Slot Numbering for a J-EX8208
Switch” on page 11.
In a redundant configuration, an SF module is used with two SRE modules to achieve
full bandwidth along with Routing Engine and switch control redundancy and switch
fabric redundancy. In a redundant configuration, the main function of the SF module is
to provide a redundant switching plane for the switch. See “Understanding J-EX8208
Switch Component and Functionality Redundancy” on page 9.
In a redundant configuration, the SF module is hot-pluggable.
The SF module contains logic that determines which SRE module is the master. The
master SRE module controls many internal functions of the SF module.
The SF module provides redundant data path connectivity for the switch in the redundant
configuration.
The SF module has these components:
•
SF module LEDs—Indicate system status. See “SF Module LEDs in a J-EX8208 Switch”
on page 26.
• Ejector levers—Used for installing and removing the SF module.
• Captive screws—Secure the SF module in place.
Related
Documentation
Installing an SF Module in a J-EX8208 Switch on page 120
•
•
Removing an SF Module from a J-EX8208 Switch on page 169
•
Taking the SF Module Offline in a J-EX8208 Switch on page 168
SF Module LEDs in a J-EX8208 Switch
The Switch Fabric (SF) module has two LEDs on the left side of the module’s front panel.
See Figure 11 on page 27. Table 16 on page 27 describes these LEDs, their colors and
states, and the status they indicate.
26
Dell PowerConnect J-Series J-EX8208 Ethernet Switch Hardware Guide