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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)： | 42/173頁 |
| 文件大?。?/td> | 2097K |
| 代理商： | MVTX2604 |
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MVTX2604
Data Sheet
44
Zarlink Semiconductor Inc.
8.0 Port Trunking
8.1 Features and Restrictions
A port group (i.e., trunk) can include up to 4 physical ports but when using stack all of the ports in a group must be
in the same MVTX2604.
The two Gigabit ports may also be trunked together. There are three trunk groups total including the option to trunk
Gigabit ports.
Load distribution among the ports in a trunk for unicast is performed using hashing based on source MAC address
and destination MAC address. Three other options include source MAC address only, destination MAC address
only and source port (in bidirectional ring mode only). Load distribution for multicast is performed similarly.
If a VLAN includes any of the ports in a trunk group, all the ports in that trunk group should be in the same VLAN
member map.
The MVTX2604 also provides a safe fail-over mode for port trunking automatically. If one of the ports in the trunking
group goes down, the MVTX2604 will automatically redistribute the traffic over to the remaining ports in the trunk in
unmanaged mode. In managed mode, the software can perform similar tasks.
8.2 Unicast Packet Forwarding
The search engine finds the destination MCT entry, and if the status field says that the destination port found
belongs to a trunk, then the group number is retrieved instead of the port number. In addition, if the source address
belongs to a trunk then the source port’s trunk membership register is checked.
A hash key, based on some combination of the source and destination MAC addresses for the current packet
selects the appropriate forwarding port as specified in the Trunk_Hash registers.
8.3 Multicast Packet Forwarding
For multicast packet forwarding, the device must determine the proper set of ports from which to transmit the
packet based on the VLAN index and hash key.
Two functions are required in order to distribute multicast packets to the appropriate destination ports in a port
trunking environment.
Determining one forwarding port per group. For multicast packets, all but one port per group, the forwarding port
must be excluded.
Preventing the multicast packet from looping back to the source trunk.
The search engine needs to prevent a multicast packet from sending to a port that is in the same trunk group with
the source port. This is because, when we select the primary forwarding port for each group we do not take the
source port into account. To prevent this, we simply apply one additional filter so as to block that forwarding port for
this multicast packet.
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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