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2. Carrier Routing System - Wikipedia

   en.wikipedia.org/wiki/Carrier_Routing_System

   Carrier Routing System (CRS) is a modular and distributed core router developed by Cisco Systems Inc that enables service providers to deliver data, voice, and video services over a scalable IP Next-Generation Network (NGN) infrastructure. In a network topology, these routers are generally positioned in the core or edge of a service provider ...

3. Administrative distance - Wikipedia

   en.wikipedia.org/wiki/Administrative_distance

   Router vendors typically design their routers to assign a default administrative distance to each kind of route. For example, on Cisco routers, routes issued by the Open Shortest Path First routing protocol have a lower default administrative distance than routes issued by the Routing Information Protocol. This is because, by default on Cisco ...

4. IP routing - Wikipedia

   en.wikipedia.org/wiki/IP_routing

   IP forwarding algorithms in most routing software determine a route through a shortest path algorithm. In routers, packets arriving at an interface are examined for source and destination addressing and queued to the appropriate outgoing interface according to their destination address and a set of rules and performance metrics.

5. Cisco Express Forwarding - Wikipedia

   en.wikipedia.org/wiki/Cisco_Express_Forwarding

   Cisco Express Forwarding (CEF) is an advanced layer 3 switching technology used mainly in large core networks or the Internet to enhance the overall network performance. . Although CEF is a Cisco proprietary protocol other vendors of multi-layer switches or high-capacity routers offer a similar functionality where layer-3 switching or routing is done in hardware (in an ASIC) instead of by ...

6. Enhanced Interior Gateway Routing Protocol - Wikipedia

   en.wikipedia.org/wiki/Enhanced_Interior_Gateway...

   Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced distance-vector routing protocol that is used on a computer network for automating routing decisions and configuration. The protocol was designed by Cisco Systems as a proprietary protocol, available only on Cisco routers.

7. List of IP protocol numbers - Wikipedia

   en.wikipedia.org/wiki/List_of_IP_protocol_numbers

   Source Demand Routing Protocol: RFC 1940: 0x2B 43 IPv6-Route Routing Header for IPv6: RFC 8200: 0x2C 44 IPv6-Frag Fragment Header for IPv6: RFC 8200: 0x2D 45 IDRP Inter-Domain Routing Protocol: 0x2E 46 RSVP Resource Reservation Protocol: RFC 2205: 0x2F 47 GRE Generic Routing Encapsulation: RFC 2784, RFC 2890: 0x30 48 DSR Dynamic Source Routing ...