Gigabit Ethernet switch (8 ports)
product description:
CF-G108W series Gigabit Ethernet switch series is an unmanaged Fast Ethernet switch developed by our company, with 8 10/100/1000Base-T RJ45 ports. Realize the convenient connection and expansion of the network. The solution of large backplane and large cache switching chip is preferred to improve the forwarding rate of large files, and can effectively solve the problems of video freezing and picture loss in the high-definition monitoring environment. It is suitable for hotels, banks, campuses, factory dormitories and small and medium-sized enterprises to form cost-effective networks. Non-network management model, plug and play, no configuration required, easy to use.
| model | CF-G108W |
| fixed port | 8 10/100/1000Base-TXRJ45 ports |
| IEEE802.1d Spanning Tree | |
| Network port features | Electrical connector: RJ45 |
| Transmission distance: ≤100 meters | |
| Performance | Forwarding method: store and forward |
| Backplane Bandwidth: 16Gbps | |
| Packet forwarding cache: 4M | |
| Power Specifications | Packet forwarding cache: 4M |
| The total power of the whole machine: 10W | |
| Standby power consumption: <3.1W (power consumption of the whole machine) | |
| Full load power consumption: <6W (whole power consumption) | |
| LED indicator | Power indicator: PWR (green); |
| Data indicator: Link/Act (green) |
| packing list | Item Name | quantity | unit |
| 8-port Gigabit Ethernet switch (CF-G108W) | 1 | tower | |
| External power adapter 12V/1A | 2 | strip | |
| Warranty card and certificate | 1 | share | |
| Quick Start Guide | 1 | share |
| Product number | product description |
| CF-G105W | External radio type 5-port Gigabit Ethernet switch, 5 RJ45 electrical ports: 10/100/1000Mbps, 100m; external power adapter: input AC 100V-240V, output DC 5V/1A |
| CF-G108W | External radio type 8-port Gigabit Ethernet switch, 8 RJ45 electrical ports: 10/100/1000Mbps, 100m; external power adapter: input AC 100V-240V, output DC 12V/1A |
Switch workflow?
1. Learning and acquisition: The switch will learn the source MAC address of the received data frame;
1. When the switch receives a data frame from a certain port, it will read the source MAC address of the frame and fill in the MAC address and its corresponding port in the MAC table. A switch means "switch" and is a network device used for electrical (optical) signal forwarding. It can provide an exclusive electrical signal path for any two network nodes of the access switch. Switches The most common switches are Ethernet switches. Other common ones are telephone voice switches, fiber switches and so on.
2. Expiration: MAC entries learned through the learning process have a time stamp, and this time stamp is used to delete old entries from the MAC table.
1. When an entry is created in the MAC table, it will start counting down using its time stamp as the starting value. After the count value reaches 0, the entry is deleted;
2. If the switch receives a frame with the same source MAC from the same port before the entry is deleted, it will refresh the entry in the table;
3. The entry will be deleted when the frame of the source MAC is still not received from the port after the time stamp count value reaches 0.
3. Flooding: The process of the switch sending frames to all ports except the receiving port is called flooding.
1. When receiving a data frame whose destination MAC address is not in the MAC table, the switch does not know which port to send the frame to, and it will flood at this time;
2. When a frame with the destination MAC address as the broadcast address is received, it will flood;
3. When a frame whose destination MAC address is a multicast (multicast) address is received, it will flood.
4. Selective forwarding: After checking the MAC address of the frame, the process of forwarding the frame from the appropriate port is called selective forwarding.
1. After the switch receives the data frame, if the MAC address of the frame is in the MAC table, it will forward the frame to the corresponding port instead of flooding to all ports.
5. Filtering: In some cases, frames will not be forwarded.
1. The switch will not forward the frame to the port that received the frame;
2. The switch will discard the damaged frame and not forward it, such as the frame that does not pass the CRC check, etc.;
3. Because some security setting frames will not be forwarded by the switch, such as MAC address-based ACL, VLAN, etc.
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