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DES-3226 NWay Standalone Fast Ethernet Switch User’s Guide
Figure 6-13. Configure Advanced Switch Features screen
This screen allows you to set the following features:
• Auto-Logout:<Never> – This sets the time the interface can be idle before the Switch automatically
logs-out the user. The options are 2 mins, 5 mins, 10 mins, 15 mins, or Never.
• MAC Address Aging Time (sec):[300 ] – This field specifies the length of time a learned MAC
Address will remain in the forwarding table without being accessed (that is, how long a learned MAC
Address is allowed to remain idle). The Aging Time can be set to any value between 10 and
1,000,000 seconds.
Note: A very long Aging Time can result with the out-of-date Dynamic Entries that may cause
incorrect packet filtering/forwarding decisions. A very short aging time may cause entries to
be aged out to soon, resulting in a high percentage of received packets whose source
addresses cannot be found in the address table, in which case the Switch will broadcast the
packet to all ports, negating many of the benefits of having a Switch.
• IGMP Snooping:<Disabled> – This setting enables Internet Group Management Protocol (IGMP)
Snooping, which enables the Switch to read IGMP packets being forwarded through the Switch in
order to obtain forwarding information from them (learn which ports contain Multicast members.
• Switch GVRP:<Disabled> – Group VLAN Registration Protocol is a protocol that allows members to
dynamically join VLANs. This is used to enable or disable GVRP on the Switch
• Telnet Status:<Enabled> – Toggle to Enabled to allow access to the Switch over the network using
the TCP/IP Telnet protocol.
• Web Status:<Enabled> – You can also use a Web-based browser to manage the Switch by toggling
to Enabled.
• Group Address Filter Mode:<Forward All Unregistered> – The IGMP filter mode for processing
multicast packets. The options are Forward All, Forward All Unregistered, and Filtered All
Unregistered.
• Scheduling Mechanism for CoS Queues:<Strict> – There are two Class of Service queue options,
RoundRobin and Strict. If Strict is selected, when the highest priority queue is full, those packets will
be the first to be forwarded. If RoundRobin is selected, the forwarding is based on the settings made
on the Class of Service Configuration screen.
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