參數(shù)資料
型號: L84302
元件分類: 通用總線功能
英文描述: L84302 Quad 100/10 Mbps 4-Port Ethernet Controller with RMON/SNMP Management Counters technical manual 4/02
中文描述: L84302四100/10 Mbps的4端口以太網(wǎng)的遠(yuǎn)程監(jiān)控控制器/ SNMP管理處的技術(shù)手冊,4月2日
文件頁數(shù): 92/128頁
文件大小: 997K
代理商: L84302
92 of 128
April, 2002
L84302 Quad 4-Port Ethernet Controller - Technical Manual
Copyright 1997-2002 by LSI Logic Corporation. All rights reserved.
4 Application Information
4.1 Example Schematics
Figure 8
shows a typical example of a switch port using the L84302.
Figure 8
100/10 Mbps Port Using the L84302 and L84220
4.2 Management Counters
4.2.1 Relationship to IETF and IEEE Specs
The L84302 management counters provide the necessary statistics, on
a per port basis, to completely support the following IETF and IEEE
specifications:
IETF RFC 1757: RMON Statistics Group
IETF RFC 1213: SNMP Interfaces Group
IETF RFC 1643: Ethernet-Like MIB
IEEE 802.3/Cl. 30: Ethernet MIB
A complete list of the counters along with their definitions was already
defined in
Table 12
. A map of the actual MIB objects from the above
specifications to the specific counters on the L84302 is shown below in
Table 38
through
Table 41
.
4.2.2 TX Packet and Octet Counters
The L84302 counter set includes 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
information because Ethernet was originally a shared media protocol. As
such, the tables below only point to receive packet and octet counters,
RX/TX DATA
MGMT
32
16
L84302
QUAD MAC
L84220
QUAD PHY
RJ 45
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