Unmanaged Switches
First, we first is that unmanaged switches, unmanaged switches, also known as fool-type switches , it simply is not the data is handled directly, plug the Internet cable.
Unmanaged switch belonging to a data link layer device , the MAC address may be information for identifying the packet, and then forwards the MAC address, and these ports and the corresponding MAC address recorded in an address of its own internal table.
Its advantage is easy to use plug and play , can be used in series where a large number of PC devices suitable for use with high intensive, cheap can save money.
Managed Switches
Managed Switch on the literal meaning, you can manage the network have a switch, three management methods, through the serial port management , through the Web management , through network management software .
Data managed switch, it will through the Simple Network Management Protocol (SNMP) to implement the configuration, SNMP protocol is based on the most widely used TCP / IP network using a network management protocol, can the data address, port, protocol type, service, etc. filtering, VLAN division usually has a function.
Managed Switches task is to make all network resources in good condition. Managed switch products provide terminal-based control port (Console) , based on Web pages and support for Telnet remote login network and other network management. Therefore, network managers can perform local or remote real-time monitoring of the operating state of the switch, network health, manage the big picture of all state and an active mode switch ports.
The advantages of managed switches, what does:
1, backplane bandwidth, faster data transfer;
2, port types offers many application selection network according to different interface forms such as: SFP, GE, Fast Ethernet, Ethernet and the like;
3, support vlan division , the user can region division for different applications, effective the network control and management, to further suppress the broadcast storm;
4, the data throughput, packet loss rate is small, low latency;
5, link aggregation allows bound together by a plurality of Ethernet ports, load balancing between the switch and the switch, and switches and a server;
6, based on source, destination, network control data stream;
7, with the ARP protection, reduction advances ARP spoofing network;
8, can bind MAC address;
9, can flow port mirroring and a state port copied to another port on the switch, for supervision;
10, supports the DHCP function;
11, access control list that may control the IP packets, such as to limit its traffic, and to provide access to QoS, etc.;
12, has a more good safety performance, you can filter MAC address, MAC address locking, and can build a static MAC forwarding;
13 to support IEEE802.1Q and port-based technology VLAN. And GVRP IEEE802.1QVLAN involved (GARP, VLAN Registration Protocol) and GMRP (GARP Multicast Registration Protocol) has been widely supported;
14, SNMP-capable , and can help achieve good control of network management;
15, easily scalable, flexible application, can be managed by network management software, you can also access their own control over remote access, network security and increase controllability.
