ProLiant BL e-Class C-GbE Interconnect Switch Command Line Interface Reference Guide

Configuring the Switch Modules using the Command Line Interface
Configuring Static (Destination Address) Filtering Table
The switch module uses a filtering database to segment the network and control
communications between segments. It can also filter packets off the network for intrusion
control. Static filtering entries can be made by MAC address.
Each port on the switch module is a unique collision domain and the interconnect switch
filters (discards) packets whose destination lies on the same port as it originated. This keeps
local packets from disrupting communications on other parts of the network.
For intrusion control, whenever the switch module encounters a packet originating from or
destined to a MAC address entered into the filter table, the interconnect switch will discard
the packet.
Some filtering is performed automatically by the switch module, including:
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Dynamic filtering, which is automatic learning and aging of MAC addresses and their
location on the network. Filtering keeps local traffic confined to its segment.
Filtering performed by Spanning Tree Protocol to filter packets based on topology,
making sure that signal loops do not occur.
Filtering performed for VLAN integrity. Packets from a member of a VLAN destined for
a device on another VLAN will be filtered.
Some filtering requires the manual entry of information into a filtering table. This includes
MAC address filtering, which is the manual entry of specific MAC addresses to be filtered
from the network. Packets sent from one manually entered MAC address can be filtered from
the network. The entry may be specified as source, destination, or both.
The following shows the static unicast and multicast filtering factory default settings:
Feature Default Value
Static Unicast Filtering Table None
Static Multicast Filtering Table None
Adding Unicast Filter Actions
The switch module supports unicast filtering for static forwarding control. Packets are
forwarded to a specific destination port (allow-to-go port) for a specific unicast destination
address.
HP ProLiant BL e-Class C-GbE Interconnect Switch Command Line Interface Reference Guide 2-57