Cisco Systems 3560 Manual De Usuario

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 shows the default fallback bridging configuration.

Up to 32 bridge groups can be configured on the switch.

An interface (an SVI or routed port) can be a member of only one bridge group. 

Use a bridge group for each separately bridged (topologically distinct) network connected to the switch.

Do not configure fallback bridging on a switch configured with private VLANs.

All protocols except IP (Version 4 and Version 6), Address Resolution Protocol (ARP), reverse ARP 
(RARP), LOOPBACK, Frame Relay ARP, and shared STP packets are fallback bridged.

To configure fallback bridging for a set of SVIs or routed ports, these interfaces must be assigned to 
bridge groups. All interfaces in the same group belong to the same bridge domain. Each SVI or routed 
port can be assigned to only one bridge group.

The protected port feature is not compatible with fallback bridging. When fallback bridging is enabled, 
it is possible for packets to be forwarded from one protected port on a switch to another protected port 
on the same switch if the ports are in different VLANs. 

Bridge groups

None are defined or assigned to a port. No 
VLAN-bridge STP is defined.

Switch forwards frames for stations that it has 
dynamically learned

Enabled.

Spanning tree parameters:

Switch priority

Port priority

Port path cost

 

 

Hello BPDU interval

Forward-delay interval

Maximum idle interval

32768.

128.

10 Mb/s: 100.

 

100 Mb/s: 19.

 

1000 Mb/s: 4.

2 seconds.

20 seconds.

30 seconds.