China
Africa
Explore chapters and articles related to this topic
Introduction
Published in Weidong Wu, Packet Forwarding Technologies, 2007
In static routing, the routing table entries are created by default when an interface is configured (for directly connected interfaces), added by, for example, the route command (normally from a system bootstrap file), or created by an Internet Control Message Protocol (ICMP) redirect (usually when the wrong default is used) [8]. Once configured, the network paths will not change. With static routing, a router may issue an alarm when it recognizes that a link has gone down, but will not automatically reconfigure the routing table to reroute the traffic around the disabled link. Static routing, used in LANs over limited distances, requires basically the network manager to configure the routing table. Thus, static routing is fine if the network is small, there is a single connection point to other networks, and there are no redundant routes (where a backup route can be used if a primary route fails). Dynamic routing is normally used if any of these three conditions do not hold true.
Layer-3 and Layer-2 MPLS VPNs
Published in Nam-Kee Tan, MPLS for Metropolitan Area Networks, 2004
With static routing implemented at the PE-CE, a default route is configured on Polydeukes-R12 and a specific static route is configured on its corresponding PE router Zephir-R2 (see Listing 9.5). Static routes are recommended in sites where the metro SP is required to enforce control over customer routing for some specific central services. However, if new or changing routes occur frequently within the site, static routing is not recommended.
A Survey on Packet Switching Networks
Published in IETE Journal of Research, 2022
Routing protocols have two different types: static and dynamic. In the static routing protocol, the routing table is not prepared automatically; instead, the network administrator prepares it, and whenever any change is required in the routing table, the network administrator updates it. The static routing protocol is divided into four types; standard static, default static, summary static, and floating static. The dynamic routing protocol automatically configures the routing table. The network administrator does not need to update or maintain the routing table. The dynamic routing protocol has further two categories of technologies/protocols; Exterior Gateway Protocol (EGP) and Interior Gateway Protocol (IGP). The IGP has further two types that are distance vector routing protocol and link-state routing protocol. These two categories of routing protocols have further different types, see figure 6. In comparison, the EGP has only one further type that is a path-vector routing protocol. Furthermore, the Border Gateway Protocol (BGP) is a path-vector routing protocol, see figure 6.
Q(λ) learning-based dynamic route guidance algorithm for overhead hoist transport systems in semiconductor fabs
Published in International Journal of Production Research, 2020
These new trends – unified layout, tool-to-tool direct delivery and a massive number of OHT operations – have created significant challenges in the operation of OHT systems. In this paper, we introduce a dynamic routing algorithm for OHT systems using learning. The routing depends on the travelling-path decision made each time an OHT performs a lot delivery job. In general, routing is categorised into static routing and dynamic routing. Static routing refers to a planning approach in which the path is fixed for given starting and destination points. A typical static routing involves deterministic shortest path planning. In contrast, in dynamic routing, the path depends on traffic conditions. If there is heavy congestion on the shortest route in terms of distance, then a dynamic routing system might reroute the delivery to a different path to avoid delays.