Q1: Industrial switch is often divided into three categories : L2, L2+, and L3， based on the level of data packet forwarding. If you want to know which routing protocol types supported by these three types of devices, and what the core differences are in their routing capabilities, switching and routing protocols?
A: there are six main routing protocol, respectively:
Ripple: the simplest internal network protocol, which is chosen by a number of jump times, is suitable for small networks.
OSPF: the most common internal network protocol, it will choose the best road by the comprehensive bandwidth and the congestion situation, is suitable for the large enterprise, the inner network of the park.
IS-IS：its principle is similar to OSPF, but its stability and extensibility are more powerful, mainly for the backbone of the operator.
EIGRP: it is Cisco's exclusive advanced internal network protocol with quick response and high efficiency, suitable for large enterprises with cisco devices.
BGP：It is a core protocol of the external network, the equivalent of the "intercontinental navigation" for the Internet, which is the Interconnection between different operators and different national networks.
Babel: it is a flexible hybrid protocol that is suitable for complex, frequently changed distributed, multitopological networks.
Q2: Switching and Routing Protocols: What is the function of the routing protocol?
A: Routing protocols is a set of rules for sharing path information between devices that allow the device to automatically identify the route and inform each other the route, and automatically select the optimal data transmission path among different routing protocol types used in routing and switching protocols. The main core features are:
1. automatically identify the right route, don’t need to do manual configure
You don't have to manually write the line rules for each router, and the router will exchange and synchronize the network's path information automatically.
2. automatically calculate the optimal route
According to the line length, the bandwidth speed, the delay, the condition of the line state, the most appropriate data transmission path is calculated.
3. It will detour automatically if the line is broken
If certain line fails and disconnects, or if a new network area is added, the protocol will automatically recalculate the routes and update the forwarding table without the need for manual configuration.
4. more convenient for large scale internet
The larger the network, more troublesome by the annual configuration. the dynamic routing protocol can significantly reduce the workload and cost of the operation. Currently, the main two routing modes are,
Static routing: configure the routes one by one simple but rigid, only suitable for a small network.
Dynamic routing protocol: automatic learning and update route, it is flexible and convenient, suitable for complex middle and large networks.
Q3. Routing and Switching Protocols: Regarding these six types of protocols, which ones are mainly supported by industrial switches?
A: RIP is the entry-level dynamic routing protocol in routing protocols in networking, which usually requires the l2 + and the above level of industrial switches to be supported. At present, the L3 industrial switches of Moxa series support the agreement, and the IS201 series of the l2 + level of Rayin technology also support. RIP can meet the demand of the dynamic routing base network of small factory area and simple network for routing and switching protocols.
OSPF v2/v3 is the core mainstream dynamic routing protocol of industrial scene. At present, the medium-high level L3 industrial switches of Moxa series support the agreement, and the IS201 series of the l2 + level of Rayin technology also support. . The switches that supports OSPF protocol, which can cover most industrial scenarios such as electricity, intelligent manufacturing and rail transportation, can support the routing planning and link redundancy department of large factories and multi-regional interconnection.
Therefore, the most common demand for the routing function of industrial switch is the static route, RIP and OSPF routing protocol types. And the OSPF is the absolute mainstream selection of the large industrial network routing protocols in networking.
Summary
If you would like to choose managed industrial switches, it is important to ensure that the device supports the static route, RIP and OSPF routing protocols in networking. If there is no special requirements for cross-domain networking and industry special protocal, this combination is sufficient to cover most of the industry site's network requirements for routing and switching protocols, which is also a cost-effective choice. For details of the product of Rayin Technology’s IS201 series, please visit www.szrayin.com
