參數(shù)資料
型號(hào)： GT-48212
廠商： Galileo Technology Services, LLC
英文描述： Advanced Switched Ethernet Controllers for 10+10/100 BaseX(高級(jí)交換式 10+10/100 BaseX以太網(wǎng)控制器)
中文描述： 先進(jìn)的交換式以太網(wǎng)控制器的10 10/100 BaseX（高級(jí)交換式10 10/100 BaseX以太網(wǎng)控制器）
文件頁(yè)數(shù)： 80/135頁(yè)
文件大?。?/td> 1619K
代理商： GT-48212
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GT-482xx Switched Ethernet Controllers for 10+10/100 BaseX
GALI
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TECHNOLOGY
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Revision 1.2
49
11.
NETWORK MANAGEMENT SUPPORT
The GT-482xx supports the following management features:
Repeater MIB counters
Port monitoring (sniffer) mode
Spanning Tree BPDU detection
Broadcast Storm filtering
HP-EASE packet sampling technology
The packet sampling (HP-EASE) functions are described in Section 12.
11.1
Repeater MIB Counters
The GT-482xx incorporates a full set of Repeater MIB counters for each Ethernet port. Counters are accessed by
the management CPU through the CPU interface.
The Repeater MIB counters include the following data:
Bytes Received
Bytes Sent
Frames Received
Frames Sent
Total Bytes Received (Good and Bad)
Total Frames Received (Good and Bad)
Multicast Frames Received
Broadcast Frames Received
CRC + Alignment Error
Oversize Frames
Fragments
Jabber Frames
Collision
Late Collision
Frames with length of 64 Bytes
Frames with length of between 65-127 Bytes
Frames with length of between 128-255 Bytes
Frames with length of between 256-511 Bytes
Frames with length of between 512-1023 Bytes
Frames with length of between 1024-1518/1536 Bytes
MAC Receive Error (received packets with RxEr asserted) - only for 100Mbps ports
Dropped Frames
See the Table 63, “Port MIB Counters,” on page 109 for detailed information on the repeater MIB counter regis-
ters.
11.2
Monitoring (Sniffer) Mode
The CPU can program the GT-482xx to work in Monitoring mode for one of the Ethernet ports. In Monitoring
mode, the GT-482xx sends all received (including local traffic) to the CPU, or to another port in the same GT-
482xx device which is assigned to be the Sniffer. The packets that are forwarded to the Sniffer are not necessarily
in a linear time order. Monitored packets are also forwarded as normal to their output port.
Sniffer packets (packets that are being sent to target sniffer) are queued to the same priority queue as the original
packet.
Monitoring Mode is enabled by setting the Sniffer Register fields. Only one port of a single GT-482xx device can
work in monitoring mode at a time.
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