Stackable NWay Ethernet Switch User’s Guide
Web-Based Network Management
107
♦
Head of Line (HOL) Blocking Prevention
This option prevents forwarding a packet to a port where an
excess of packets are queued up. Note that when a multicast packet or a packet with an unknown destination
address needs to be forwarded to several ports, and if some of them are “blocking,” the packet will not be
discarded, rather it will be forwarded only to the ports that are not “blocking.”
Port
Figure 7-5. Configure Port window
Select the port you want to configure by clicking on the port in the Switch front panel display at the top of the screen.
Then follow these steps:
1.
Enable or disable the port in the State field. If you choose
Disable
, devices connected to that port cannot use the
Switch, and the Switch purges their addresses from its address table after the MAC address aging time elapses.
The Switch won't purge addresses if you define them as permanent entries in the Static Forwarding Table.
2.
Configure the Speed/Duplex setting for the port. Select
Auto
for Auto-Negotiation. This allows the port to select
the best transmission speed and duplex mode based on the capabilities of the device at the other end. Select
100/Full
for port operation at 100 Mbps and full duplex. Select
100/Half
for port operation at 100 Mbps and
half duplex. Select
10/Full
for port operation at 10 Mbps and full duplex. Select
10/Half
for port operation at 10
Mbps and half duplex.
3.
Configure the Flow Control setting for the port. Selecting
On
in full-duplex mode will implement IEEE 802.3x
flow control. Selecting
On
when the port is in half duplex mode will implement normal Ethernet collision-based
backpressure flow control. Select
Off
for no flow control. Also, if the port is set for
Auto
(NWay) in the
Summary of Contents for DES-3624i
Page 177: ......
