參數(shù)資料
型號： MVTX2604
廠商： Zarlink Semiconductor Inc.
英文描述： Managed 24-Port 10/100 Mb + 2 Port 1 Gb Ethernet Switch
中文描述： 管理24端口的10/100 Mb 2端口千兆以太網(wǎng)交換機1
文件頁數(shù)： 35/173頁
文件大小： 2097K
代理商： MVTX2604
MVTX2604
Data Sheet
37
Zarlink Semiconductor Inc.
Table 7 shows that different types of applications may be placed in different boxes in the traffic table. For example,
casual web browsing fits into the category of high-loss, high-latency-tolerant traffic, whereas VoIP fits into the
category of low-loss, low-latency traffic.
7.2 Four QoS Configurations
There are four basic pieces to QoS scheduling in the MVTX2604: strict priority (SP), delay bound, weighted fair
queuing (WFQ), and best effort (BE). Using these four pieces, there are four different modes of operation as shown
in the tables below. For 10/100 Mbps ports, the following registers select these modes:
Table 8 - Four QoS Configurations for a 10/100 Mbps Port
QOSC40 [7:6] and QOSC48 [7:6] select these modes for the first and second gigabit ports, respectively.
Table 9 - Four QoS Configurations for a Gigabit Port
The default configuration for a 10/100 Mbps port is three delay-bounded queues and one best-effort queue. The
delay bounds per class are 0,8 ms for P3, 3.2 ms for P2, and 12.8 ms for P1. For a 1 Gbps port, we have a default
of six delay-bounded queues and two best-effort queues. The delay bounds for a 1 Gbps port are 0.16 ms for P7
and P6, 0.32 ms for P5, 0.64 ms for P4, 1.28 ms for P3, and 2.56 ms for P2. Best effort traffic is only served when
there is no delay-bounded traffic to be served. For a 1 Gbps port, where there are two best-effort queues, P1 has
strict priority over P0.
We have a second configuration for a 10/100 Mbps port in which there is one strict priority queue, two delay
bounded queues and one best effort queue. The delay bounds per class are 3.2 ms for P2 and 12.8 ms for P1. If
the user is to choose this configuration, it is important that P3 (SP) traffic be either policed or implicitly bounded
(e.g., if the incoming P3 traffic is very light and predictably patterned). Strict priority traffic, if not admission-
controlled at a prior stage to the MVTX2604 can have an adverse effect on all other classes’ performance. For a
1 Gbps port, P7 and P6 are both SP classes and P7 has strict priority over P6. In this case, the delay bounds per
class are 0.32 ms for P5, 0.64 ms for P4, 1.28 ms for P3, and 2.56 ms for P2.
QOSC24 [7:6]_CREDIT_C00
QOSC28 [7:6]_CREDIT_C10
QOSC32 [7:6]_CREDIT_C20
QOSC36 [7:6]_CREDIT_C30
P3
P2
P1
P0
Op1 (default)
Delay Bound
BE
Op2
SP
Delay Bound
BE
Op3
SP
WFQ
Op4
WFQ
P7
P6
P5
P4
P3
P2
P1
P0
Op1 (default)
Delay Bound
BE
Op2
SP
Delay Bound
BE
Op3
SP
WFQ
Op4
WFQ
相關(guān)PDF資料
PDF描述
MVTX2604AG Managed 24-Port 10/100 Mb + 2 Port 1 Gb Ethernet Switch
MVTX2801 Unmanaged 4-Port 1000 Mbps Ethernet Switch
MVTX2801AG Unmanaged 4-Port 1000 Mbps Ethernet Switch
MVTX2802 Managed 4-Port 1000 Mbps Ethernet Switch
MVTX2802AG Managed 4-Port 1000 Mbps Ethernet Switch
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MVTX2604A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MVTX260x Physical Port Control
MVTX2604AG 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Managed 24-Port 10/100 Mb + 2 Port 1 Gb Ethernet Switch
MVTX2801 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Unmanaged 4-Port 1000 Mbps Ethernet Switch
MVTX2801A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Unmanaged 4 port Gigabit Ethernet switch
MVTX2801AG 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Unmanaged 4-Port 1000 Mbps Ethernet Switch
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