Disabled State - IBM BladeCenter Installation And User Manual

Disabled state

A port in the disabled state does not participate in frame forwarding or STP. A port
in the disabled state is virtually non-operational.
A disabled port does the following:
v Discards packets received from the network segment to which it is attached.
v Discards packets sent from another port on the switch for forwarding.
v Does not add addresses to its forwarding database.
v Receives BPDUs, but does not direct them to the system CPU.
v Does not receive BPDUs for transmission from the system CPU.
v Receives and responds to network management messages.
The following illustration shows the actions that occur when a port is in the disabled
state.
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IBM BladeCenter 4-Port Gb Ethernet Switch Module: Installation and User's Guide
Addresses
Forwarding Forwarding
Database Database
Discard
Data Data
Packets Packets
Network Segment Network Segment
Port 1 Port 1
Forwarding
Network Network
Management Management
BPDUs
Packets Packets
CPU
BPDUs
Port 2 Port 2
Learning
Network Segment Network Segment
Data Data
Packets Packets
Switch Switch
Fabric Fabric