HIRSCHMANN RS20-0800M4M4EDHPHC switch in stock

Brand

HIRSCHMANN/Germany

Application Areas

Oil, Mining, Energy, Road/Rail/Shipping, Integrated

HIRSCHMANN switches are devices that perform information exchange functions in communication systems.

In computer network systems, the concept of switching represents an improvement over shared operating modes. A hub is a type of shared device. The hub itself cannot identify the destination address. When host A transmits data to host B within the same local area network (LAN), the data packet is transmitted in a broadcast manner on a network based on a hub architecture. Each terminal determines whether to receive the packet by verifying the address information in the packet header. In this mode, only one set of data frames can be transmitted on the network at a time; if a collision occurs, it must be retried. This method is called shared network bandwidth.

The main functions of HIRSCHMANN switches include physical addressing, network topology, error checking, frame sequencing, and flow control. Currently, switches also have some new functions, such as support for VLANs (Virtual Local Area Networks), support for link aggregation, and some even have firewall functionality.

Differences between HIRSCHMANN switches and hubs (Folded)

1. From the OSI architecture perspective, hubs belong to the first physical layer, while switches belong to the second data link layer. This means that hubs only synchronize, amplify, and shape data transmission; they cannot effectively handle short frames or fragments in data transmission, and therefore cannot guarantee the integrity and correctness of data transmission. Switches, on the other hand, can not only synchronize, amplify, and shape data transmission, but also filter short frames and fragments.

2. From an operational perspective, hubs operate in a broadcast mode. This means that when one port of a hub is active, all other ports can receive the information, easily leading to broadcast storms. In large networks, this can significantly impact network performance. Switches, however, avoid this phenomenon. When a switch is active, only the port that initiated the request responds to the destination port, without affecting other ports. Therefore, switches can isolate collision domains and effectively suppress broadcast storms.

3. In terms of bandwidth, regardless of the number of ports, a hub shares a single bandwidth across all ports. Only two ports can transmit data at a time, while other ports must wait. Furthermore, a hub can only operate in half-duplex mode. In contrast, each port on a switch has its own dedicated bandwidth. The operation of two ports does not affect the operation of other ports. Moreover, a switch can operate in both half-duplex and full-duplex modes.

HIRSCHMANN switch

RS20-0400T1T1SDAPHC

RS20-0400T1T1TDAEHC

RS20-0400T1T1TDAPHC

RS20-0400T1T1EDAEHC

RS20-0400T1T1EDAPHC

RS20-0400T1T1SDHEHC

RS20-0400T1T1SDHPHC

RS20-0400T1T1TDHEHC

RS20-0400T1T1TDHPHC

RS20-0400T1T1EDHEHC

RS20-0400T1T1EDHPHC

RS20-0400T1T1SDBEHC

RS20-0400T1T1SDBPHC

RS20-0400T1T1TDBEHC RS20-0400T1T1TDBPHC

RS20-0400T1T1EDBEHC

RS20-0400T1T1EDBPHC

RS20-0800M2M2SDAEHC

RS20-0800M2M2SDAPHC

RS20-0800M2M2TDAEHC

RS20-0800M2M2TDAPHC

RS20-0800M2M2EDAEHC

RS20-0800M2M2EDAPHC

RS20-0800M2M2SDHEHC

RS20-0800M2M2SDHPHC

RS20-0800M2M2TDHEHC

RS20-0800M2M2TDHPHC

RS20-0800M2M2EDHEHC

RS20-0800M2M2EDHPHC RS20-0800M2M2SDBEHC

RS20-0800M2M2SDBPHC

RS20-0800M4M4EDHEHC

RS20-0800M4M4EDHPHC

RS20-0800M4M4SDBEHC

RS20-0800M4M4SDBPHC

RS20-0800M4M4TDBEHC

RS20-0800M4M4TDBPHC

RS20-0800M4M4EDBEHC

RS20-0800M4M4EDBPHC

RS20-0800S2S2SDAEHC

RS20-0800S2S2SDAPHC

RS20-0800S2S2TDAEHC

RS20-0800S2S2TDAPHC The company mainly deals with European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, Vickers, Helón (Norgren)

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi