Chapter 5
Setup and Configuration
RUGGEDCOM ROS
User Guide
188
Configuring MAC Address Learning Options
Section 5.4.2
Configuring MAC Address Learning Options
The MAC address learning options control how and when MAC addresses are removed automatically from the
MAC address table. Individual addressees are removed when the aging timer is exceeded. Addresses can also be
removed when a link failure or topology change occurs.
To configure the MAC address learning options, do the following:
1. Navigate to
MAC Address Tables
»
Configure MAC Address Learning Options
. The
MAC Address
Learning Options
form appears.
4
3
2
1
Figure 115: MAC Address Learning Options Form
1.
Aging Time Box
2.
Age Upon Link Loss Options
3.
Apply Button
4.
Reload Button
2. Configure the following parameter(s) as required:
Parameter
Description
Aging Time
Synopsis:
15 to 800
Default:
300 s
This parameter configures the time that a learned MAC address is
held before being aged out.
Age Upon Link Loss
Synopsis:
{ No, Yes }
Default:
Yes
When set to Yes, all MAC addresses learned on a failed port will be
aged-out immediately upon link failure detection.
When link failure occurs the switch may have some MAC
addresses previously learned on the failed port. As long as those
addresses are not aged-out the switch will still be forwarding
traffic to that port, thus preventing that traffic from reaching its
destination via the new network topology.
Note that when a network redundancy protocol, e.g. RSTP/MSTP,
is enabled on the switch, that redundancy protocol may, upon
a link failure, flush MAC addresses learned on the failed port
regardless of the setting of this parameter.
3. Click
Apply
.
Section 5.4.3
Configuring MAC Address Flooding Options
To configure the MAC address flooding options, do the following:
