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參數(shù)資料
| 型號(hào)： | 84302 |
| 廠商： | LSI Corporation |
| 英文描述： | 4-Port Fast Ethernet Controller( 4端口快速以太網(wǎng)控制器) |
| 中文描述： | 4端口快速以太網(wǎng)控制器（4端口快速以太網(wǎng)控制器） |
| 文件頁(yè)數(shù)： | 65/96頁(yè) |
| 文件大小： | 826K |
| 代理商： | 84302 |
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84302 4-Port
Fast Ethernet Controller
4-65
MD400171/C
APPLICATION INFORMATION
EXAMPLE SCHEMATICS
A ypical example of a switch port using he 84302 s shown
in Figure 8.
MANAGEMENT COUNTERS
Relationship to IETF and IEEE Specs
The 84302 management counters provide the necessary
statistics, on a per port basis, to completely support the
following IETF and IEEE specifications:
(1) IETF RFC 1757: RMON Statistics Group
(2) IETF RFC 1213: SNMP Interfaces Group
(3) IETF RFC 1643: Ethernet-Like MIB
(4) IEEE 802.3/Cl. 30: Ethernet MIB
A complete list of the counters along with their definitions
was already defined in Table 11. A map of the actual MIB
objects from the above specifications to the specific
counters on the 84302 is shown below in Tables 38-41.
TX Packet and Octet Counters
The 84302 counter set ncludes packet and octet counters
for the transmit packets as well as receive. The RMON
specs literally state that packet and octet counters should
only tabulate received information. This is sometimes
interpreted to mean both transmitted and received infor-
mation because Ethernet was originally a shared media
protocol. As such, the tables below only point to receive
packet and octet counters, but the transmit packet and
octet counters are also available in counters #17-26 and
can be summed with the receive packet and octet counts
if desired.
Figure 8. 100/10 Mbps Port Using the SEEQ 84302 and 80220
SEEQ
84302
QUAD MAC
SEEQ
84220
QUAD PHY
RJ 45
RX/TX DATA
32
16
MGMT
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