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参数资料
| 型号： | ZL50408GDC |
| 厂商： | CONEXANT SYSTEMS |
| 元件分类： | 网络接口 |
| 英文描述： | DATACOM, LAN SWITCHING CIRCUIT, PBGA208 |
| 封装： | 17 X 17 MM, 1.40 MM HEIGHT, MO-192, LBGA-208 |
| 文件页数： | 93/144页 |
| 文件大小： | 1779K |
| 代理商： | ZL50408GDC |
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ZL50408
Data Sheet
52
Zarlink Semiconductor Inc.
2. Is the frame's source port a member of the VLAN? If so, exclude that port. Is the frame's source port a member
of a trunk group? If so, exclude all other ports in that group as well.
3. Finally, among the still-eligible members of the VLAN that belong to trunk groups, exclude all but one port from
each trunk group. This selection is based on hashing or round robin, as in unicast frame forwarding.
Example: Ports 0, 1, and 2 belong to trunk group A. Ports 3 and 4 belong to trunk group B. A multicast frame is
received from source port 3. Suppose that the VLAN of the frame has member ports 0, 1, 2, 3, 4, 5, and 6.
Ports 0, 1, 2, 3, 4, 5, and 6 are potential destination ports for the frame.
Port 3 is excluded as a destination because it is the frame's source port.
Port 4 is excluded as a destination because it belongs to the same trunk group as port 3.
Two of the three ports in trunk group A must now be excluded. The ZL330ENG hashing algorithm is applied,
and in this example, assume that ports 0 and 1 are excluded.
Therefore, ports 2, 5 and 6 comprise the final set of destination ports for the multicast frame.
9.0
Traffic Mirroring
See Traffic Mirroring application note, ZLAN-50, for more information.
9.1
Mirroring Features
Packets can be mirrored (duplicated) for network monitor purpose and/or network debug purpose. Three types of
mirroring is available in ZL50408.
1. Source or Destination MAC address based
2. Flow based
3. Port based (RMII mode only)
In source or destination mac address based mirroring, the “M” bit of the mirroring MAC address in the MCT is set.
Also, the user need to specify the mirroring MAC address is source or destination of the packet. If source is
selected, any packet received with the mirroring MAC address as source MAC address will be copied to the
mirrored port. In the same way, if destination is selected, any packet received with mirroring MAC address as
destination MAC address will be copied to the mirrored port.
In flow based mirroring, a flow is established based on the source and destination mac address pair. When
enabled, a packet with source and destination address match the pre-programmed source and destination mac
address pair will be copied to the mirrored port. In reverse direction (source and destination match pre programmed
destination and source), the flow can also be enabled and the frame will be copied to the mirrored port.
In port based mirroring, traffic from any RMII port can be mirrored to any other RMII port. The traffic from the source
port can be either ingress or egress traffic. Up to two ports can be setup as mirrored ports. As a result, the traffic
(both ingress and egress) of a specific port can be monitored by setting up both mirrored ports. Once a port is setup
as mirrored port, it cannot be used for regular traffic.
The mirrored port can be any port in the ZL50408.
9.2
Using port mirroring for loop back
To perform remote loop back test, port mirroring can be used to bounce back the packet to the source port to check
the data path.
The CPU needs to setup the remote device through the command channel to enable port mirroring in the remote
device. A CPU packet is send to the port in test in Device A. The packet will be forwarded to the test port, external
cable, the destination port in Device B, and loop back to itself, back to the cable and go back to Device A and the
CPU. This way, the whole channel can be tested.
相关PDF资料 |
PDF描述 |
|---|---|
| ZL50408GDG2 | DATACOM, LAN SWITCHING CIRCUIT, PBGA208 |
| ZL50418GKG2 | DATACOM, LAN SWITCHING CIRCUIT, PBGA553 |
| ZL50418/GKC | DATACOM, LAN SWITCHING CIRCUIT, PBGA553 |
| ZL50418GKG2 | DATACOM, LAN SWITCHING CIRCUIT, PBGA553 |
| ZLW-2-B | 1 MHz - 1000 MHz RF/MICROWAVE DOUBLE BALANCED MIXER, 9.5 dB CONVERSION LOSS-MAX |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ZL50408GDG2 | 制造商:Microsemi Corporation 功能描述: |
| ZL50409 | 制造商:ZARLINK 制造商全称:Zarlink Semiconductor Inc 功能描述:Managed 9-Port 10/100M Ethernet Switch |
| ZL50409GDC | 制造商:ZARLINK 制造商全称:Zarlink Semiconductor Inc 功能描述:Managed 9-Port 10/100M Ethernet Switch |
| ZL50409GDC1 | 制造商:Microsemi Corporation 功能描述: |
| ZL50410 | 制造商:ZARLINK 制造商全称:Zarlink Semiconductor Inc 功能描述:Managed 8-Port 10/100M + 1-Port 10/100/1000M Ethernet Switch |
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