Cisco Systems EA6500 Manual De Usuario

Truncated mode—The switch uses this mode for traffic between fabric-enabled modules when there 
are both fabric-enabled and nonfabric-enabled modules installed. In this mode, the switch sends a 
truncated version of the traffic (the first 64 bytes of the frame) over the switch fabric channel. 

Bus mode—The switch uses this mode for traffic between nonfabric-enabled modules and for traffic 
between a nonfabric-enabled module and a fabric-enabled module. In this mode, all traffic passes 
between the local bus and the supervisor engine bus.

 shows the switch modes used with fabric-enabled and nonfabric-enabled modules installed.

These section describe configuring the Switch Fabric Module:

With Release 12.1(11b)E and later releases, when you are in configuration mode you can enter EXEC 
mode-level commands by entering the do keyword before the EXEC mode-level command.

The commands in this section are supported only with Release 12.1(11b)E and later releases.

To configure the switching mode, perform this task: 

Between fabric-enabled modules (when no nonfabric-enabled modules are 
installed)

Compact

1

1.

In show commands, displayed as dcef mode for fabric-enabled modules with DFC installed; displayed as fabric mode for 
other fabric-enabled modules.

Between fabric-enabled modules (when nonfabric-enabled modules are also 
installed)

Truncated

2

2.

Displayed as fabric mode in show commands.

Between fabric-enabled and nonfabric-enabled modules 

Bus

Between non-fabric-enabled modules

Bus

Router(config)# [no] fabric switching-mode allow 

{bus-mode | {truncated [{threshold [number]}]} 

Configures the switching mode.