17
is defined by the following selection.
•
CRC hashing bit [11:0]
•
CRC hashing bit [16:5]
•
CRC hashing bit [24:13]
•
CRC hashing bit [30:19]
Note:
Direct mapping: It means DA/SA addresses are directly used as an index
of address table.
Default:
setting
CRC hashing bit [11:0]
6.2.5 Address aging out
If the dynamically learned Source Address will be cleared if it is not refreshed in
less than programmed time.
Only when you enable address aging out, aging timer would be active. You can
setup the aging timer from 0 to 24 hrs and from 0 to 59 min.
Note:
Aging timer provides for address table. The timer period is defined to age
out the least unused entries on address table.
Default:
setting
Enable
aging time about
5 minutes
.
6.2.6 Back
pressure
You can enable Back-Pressure Flow-Control on half duplex connection for all
ports.
Default:
setting
Enable
6.2.7 Priority
Setting
If you enable the function, it has two priority subitem:
•
All high then low priority packet
•
Set priority transmission ratio
Note:
The Switch supports 3 types of QoS functions to improve multi-media or
real-time network applications. The QoS function based on IEEE802.1p/802.1q
port priority, VLAN tag priority, and TCP/IP header’s TOS/DS.
Only when you check the
Enable priority setting
box at
System Base
Configuration
page, then the
Priority Setting
page will be active.
•
All high then low priority packets
•
Set priority transmission ratio
All high
then low
priority
packets
Tell the Switch transmit all the high priority packets
first, then the other low priority packets.
Set priority
transmissio
n ratio
Tell the Switch make a transmission ratio of the
high/low priority packet.
The default high/low ratio is 5:1. You can make the
ratio by yourself from 1 to 7 of high or low ratio.
Default:
setting
Enable
and
All high then low
.
