What is a CEF Table? 相關
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搜尋結果
- FIB is known by the name of CEF table. FIB table learns the routing information from the IP Routing Table and tracks the next-hop for all routes. So while the Adjacency table manages layer 2 information, the CEF table manages the layer 3 forwarding information.
ipwithease.com/cisco-express-forwarding-cef/Ultimate Guide to Cisco Express Forwarding(CEF) - IP With Ease
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With CEF we put all this information into a single hardware table which allows really fast packet forwarding. Other vendors do the same thing, CEF is Cisco-only though. Rene
- Update The Grps Routing Tables
- Packet Forwarding For All Line Cards Except OC48 and Qoc12
- Packet Forwarding For OC48 and Qoc12 Line Cards
Figure 1 illustrates the process by which a routing update packet is sent to the Gigabit Route Processor (GRP) and the resultant forwarding update messages are sent to FIB tables on the line cards. For clarity, the numbering of the next paragraphs corresponds to the numbering in Figure 1. The next process occurs during route table initialization, o...
Once the line cards have enough forwarding information to determine the path through the switching fabric (for instance, the destination of the next hop), the 12000 router is ready to forward packets. The next steps outline the simple and fast forwarding technique used by the 12000 router (seeFigure 1). For clarity, the lettering of the paragraphs ...
When the line cards have enough forwarding information to determine the path through the switching fabric (for example, the destination of the next hop), the 12000 router is ready to forward packets. The next steps make up the simple and hyper-fast forwarding technique used by the 12000 (seeFigure 2). For clarity, the lettering of the paragraphs co...
2013年12月26日 · The Routing Information Base (RIB) is control plane and is assembled by routing protocols that find the best path and then they compete to install into the global RIB. Static routes can also be used of course. The Forwarding Information Base (FIB) is data plane and is what is used when looking how to forward packets.
2014年11月23日 · A VRF consists of an IP routing table, a derived forwarding table, a set of interfaces that use the forwarding table, and a set of rules and routing protocols that determine what goes into the forwarding table.
Cisco Express Forwarding (CEF) is a packet-switching technique that is the default for most of Cisco routing platforms. CEF Cisco provides the ability to switch packets (through advanced, Layer 3 IP switching technology) via a device in a way that minimises the load on router’s processor.
2019年3月5日 · Cisco Express Forwarding (CEF) is advanced, Layer 3 IP switching technology. CEF optimizes network performance and scalability for networks with large and dynamic traffic patterns, such as the Internet, on networks characterized by intensive Web-based applications, or interactive sessions. Benefits.
CEF is composed of two elements: The FIB and the adjacency table. This blog post was meant to explore their essence and inner mechanisms and to unveil their logic and benefits without diving into bells and whistles.
