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

Configuring the GbE Interconnect Switch using the Command Line Interface
Displaying Auto-Logout Timer Settings
Use the following command to show the auto-logout timer settings:
Command Description
auto-logout show
Displays the current value set for the
auto-logout timer for idle timeout of the RS-232
console and Telnet management interface
sessions
For example:
Configuring MAC Address Aging Timer
The GbE Interconnect Switch enters into its forwarding table the mapping between the MAC
address of the device and the Ethernet port to which the device is attached. This information
is used to forward packets. This reduces the traffic congestion on the network, because
packets are forwarded to the destination port only, instead of being forwarded to all ports.
The MAC address aging timer prunes the forwarding table addresses entries that are no
longer used. Dynamic forwarding table entries, which are made up of MAC addresses and
their associated port numbers, are deleted from the table if they are not seen within the aging
timeout. The aging time can be from 10 to 1,000,000 seconds with a default value of 300
seconds. A very long aging time can result in dynamic forwarding table entries that are out-
of-date or no longer are used.
If the aging time is too short, however, many entries may be aged out too soon. This will
result in a high percentage of received packets whose destination addresses cannot be found
in the forwarding table. In this case the GbE Interconnect Switch will broadcast the packet to
all ports, negating many of the benefits of having a switch.
Static forwarding entries are not affected by the aging time.
The following shows the factory default setting for the MAC address aging time:
Feature Default Value
MAC Address Aging Time 300 seconds
2-14 HP ProLiant BL p-Class GbE Interconnect Switch Command Line Interface Reference Guide