Intel NetStructure ZT 8101 10, Руководство пользователя

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74 Intel® NetStructure™ ZT 8101 10/100 Ethernet Switch User’s Manual
Using the Telnet Console
3. Configure these fields.
4. Highlight APPLY and press Enter.
5. To remove an entry, toggle the Action field to Delete, enter the IP address and the direction,
highlight APPLY, and press Enter.
Priority Settings
The ZT 8101 switch allows you to assign specific levels of priority to traffic traversing the switch.
Setting priority allows you to protect bandwidth for important nodes on your network. Frames that
match the user defined criteria are given a priority tag. The switch supports four hardware priority
levels per egress port, so the eight levels (0-7) of priority are mapped to four hardware queues (0-3)
as listed in the table below.
After an Ethernet frame has been prioritized, the switch forwards the Ethernet frame using the strict
priority-based scheduling algorithm. With this algorithm, any frames residing in a higher priority
queue are always transmitted first. Only when these queues are empty are frames in lower priority
queues transmitted. If priority is not assigned to a frame the default value is 0.
Note: If flow control is enabled, a small of amount of low priority traffic may be forwarded before high
priority traffic.
MAC Address Priority
You can specify a MAC address so that packets with this address are given special handling, either
a higher or lower priority than normal traffic.
1. From the Main Menu, select Priority Settings, and press Enter.
2. Select MAC Address Priority, and press Enter.
3. Toggle the Action field to Add/Modify and configure these fields.
Field Description
IP Address Specifies the IP address of the packets you want dropped.
Source/Destination
Specifies the condition for filtering the packets:
• Dst. (destination)—Packets with the above IP address as their
destination will be dropped.
• Src. (source)—Packets with the above IP address as their source will
be dropped.
• Either—All packets with the above IP address will be dropped.
Priority in Frames Priority Queue of ASIC
0-1 0
2-3 1
4-5 2
6-7 3