Managed
switch, unmanaged switch, which one to choose
When
choosing a switch, one often encounters a problem, whether to choose a managed
switch or an unmanaged switch. What is the difference between a managed switch
and an unmanaged switch? Managed switches are more powerful than unmanaged
switches. It usually provides a simple network management protocol for
monitoring connection status, STP, and other advanced functions (such as QOS
and VLAN). Compared with unmanaged switches, managed switches are much more
expensive, and configuration is much more time-consuming than unmanaged
technology Io.
Unmanaged switch
Disadvantages
of unmanaged switches:
(1)
Unmanaged industrial switches have limited functions and are suitable for small
networks;
(2)
ARP protection is not supported. ARP attack is not a virus, so almost all
anti-virus software is helpless. But it is better than a virus because it will
slow down the communication speed, paralyze the network and cause information
leakage.;
(3)
No binding with this Mac address;
(4)
VLAN division is not supported. The end users connected to the non-network
management switch are in the same broadcast domain, and the broadcast storm
will break out, which cannot protect and suppress the broadcast storm.
Congestion, blockage and flooding of the entire network cause the entire network
to be paralyzed;
(5)
Does not support flow-based control;
(6)
The reliability of data transmission is poor and packet loss is serious;
(7)
The component is a single component and cannot be used in large and
medium-sized networks, which has great limitations on network upgrades and
expansion;
(8)
Inconvenient management and high hardware failure rate.
Advantages
of unmanaged switches:
(1)
Cheap price and save money;
(2)
The number of ports is dense;
(3)
It is convenient for users to use.
Managed Ethernet
Switch
Advantages
of managed Ethernet switches
(1)
Backplane bandwidth response, faster data forwarding speed;
(2)
Use the access layer of large and medium-sized networks for flexible
networking;
(3)
The ports provided are very flexible, and different interface forms can be
selected according to the application of the network: SFP, GE, Fast Ethernet,
Ethernet, etc.;
(4)
It supports the division of VLAN, users can divide the area according to different
applications, and effectively control and manage the network. Further restrain
the broadcast storm;
(5)
The data throughput of the gateway switch is large, the packet loss rate is
small, and the delay is low;
(6)
Data information flow can be controlled according to source, destination and
network segment;
(7)
Link aggregation allows switches and switches, and switches and servers to be
bound together through multiple Ethernet ports to achieve load balancing;
(8)
With ARP protection function, further reducing network ARP spoofing;
(9)
Binding with MAC address;
(10)
The port mirroring function can copy the flow and status of one port to another
port of the switch for monitoring;
(11)
Support DHCP function;
(12)
The access control list can control IP data packets, such as restricting its
traffic;
(13)
It has good security. These switches can perform MAC address filtering, MAC
address locking, and can build static MAC forwarding tables;
(14)
It can support IEEE802.1Q and VLAN based on port technology. The GVRP (GARP,
VLAN Registration Protocol) and GMRP (GARP Multicast Registration Protocol)
involved in IEEE802.1QVLAN have also been widely supported;
(15)
With SNMP function, it can better manage and control the network;
(16)
The application is easy to expand and flexible. It can be managed through
network management software, and it can also be accessed remotely through its
own access control. Improve network security and controllability;
Unmanaged
switches-These switches have no configuration interface or options. They are
plug and play. They are usually the cheapest switches in the home, SOHO or
small business. They can be desktop or rack mount.
Managed
switches-These switches have one or more methods or interfaces to modify the
operation of the switch. Common management methods include: serial console or
command line interface accessed through telnet or Secure Shell; embedded simple
network management Protocol SNMP agent, allowing management from a remote
console or management station; Web interface for management from a web browser.
Examples of configuration changes that can be performed from a managed switch
include: enabling functions such as spanning tree protocol; setting port speed;
Create or modify VLAN, etc.
