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參數(shù)資料
| 型號： | MVTX2801AG |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 網(wǎng)絡(luò)接口 |
| 英文描述： | Unmanaged 4-Port 1000 Mbps Ethernet Switch |
| 中文描述： | DATACOM, LAN SWITCHING CIRCUIT, PBGA596 |
| 封裝： | 40 X 40 MM, 2.33 MM HEIGHT, MS-034, HSBGA-596 |
| 文件頁數(shù)： | 18/106頁 |
| 文件大小： | 1455K |
| 代理商： | MVTX2801AG |
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MVTX2801
Data Sheet
18
Zarlink Semiconductor Inc.
It is possible that a class of traffic may attempt to monopolize system resources by sending data at a rate in excess
of the contractually assured bandwidth for that class. A well-behaved class offers traffic at a rate no greater than the
agreed-upon rate. By contrast, a misbehaving class offers traffic that exceeds the agreed-upon rate. A misbehaving
class is formed from an aggregation of misbehaving microflows. To achieve high link utilization, a misbehaving class
is allowed to use any idle bandwidth. However, the quality of service (QoS) received by well-behaved classes must
never suffer.
As Table 1 illustrates, each traffic class may have its own distinct properties and applications. As shown, classes
may receive bandwidth assurances or latency bounds. In the example, P7, the highest transmission class, requires
that all frames be transmitted within 0.2 ms, and receives 30% of the 1 Gbps of bandwidth at that port.
Best-effort (P1-P0) traffic forms a lower tier of service that only receives bandwidth when none of the other classes
have any traffic to offer.
In addition, each transmission class has two subclasses, high-drop and low-drop. Well-behaved users should not
lose packets. But poorly behaved users, users who send data at too high a rate, will encounter frame loss, and the
first to be discarded will be high-drop. Of course, if this is insufficient to resolve the congestion, eventually some
low-drop frames are dropped as well.
Table 1 shows that different types of applications may be placed in different boxes in the traffic table. For example,
web search may fit into the category of high-loss, high-latency-tolerant traffic, whereas VoIP fits into the category of
low-loss, low-latency traffic.
Class
Example
Assured
Bandwidth
(user defined)
Low Drop Subclass
(If class is oversubscribed,
these packets are the
last to be dropped.)
High Drop Subclass
(If class is oversubscribed,
these packets are the
first to be dropped.)
Highest transmission
priorities, P7
Latency < 200
μ
s
300 Mbps
Sample application:
control information
Highest transmission
priorities, P6
Latency < 200
μ
s
200 Mbps
Sample applications:
phone calls;
circuit emulation
Sample application:
training video;
other multimedia
Middle transmission
priorities, P5
Latency < 400
μ
s
125 Mbps
Sample application:
interactive activities
Sample application:
non-critical interactive activities
Middle transmission
priorities, P4
Latency < 800
μ
s
250 Mbps
Sample application:
web business
Low transmission
priorities, P3
Latency < 1600
μ
s
80 Mbps
Sample application:
file backups
Low transmission
priorities, P2
Latency < 3200
μ
s
45 Mbps
Sample application:
email
Sample application:
web research
Best effort, P1-P0
-
Sample application: casual web browsing
TOTAL
1 Gbps
Table 1 - Two-dimensional World Traffic
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MVTX2802 | Managed 4-Port 1000 Mbps Ethernet Switch |
| MVTX2802AG | Managed 4-Port 1000 Mbps Ethernet Switch |
| MVTX2803 | Unmanaged 8-Port 1000 Mbps Ethernet Switch |
| MVTX2803AG | Unmanaged 8-Port 1000 Mbps Ethernet Switch |
| MVTX2804 | 8-Port 1000 Mbps Ethernet Distributed Switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MVTX2802 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Managed 4-Port 1000 Mbps Ethernet Switch |
| MVTX2802A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Managed 4 port Gigabit Ethernet switch |
| MVTX2802AG | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Managed 4-Port 1000 Mbps Ethernet Switch |
| MVTX2803 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Unmanaged 8-Port 1000 Mbps Ethernet Switch |
| MVTX2803A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Unmanaged 8 port Gigabit Ethernet switch |
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