Table of Contents
- 1 What is Auto-summary?
- 2 What does no auto-summary do in EIGRP?
- 3 What is summary address EIGRP?
- 4 What is EIGRP stub connected summary?
- 5 Where can route summarization occur with EIGRP?
- 6 What is EIGRP stub?
- 7 What is route summarization explain with help of example?
- 8 What is EIGRP and how it works?
- 9 What devices run using EIGRP?
What is Auto-summary?
Auto summarization is a feature which allows Routing Information Protocol (RIP) to summarize its routes to their classful networks automatically.
What does no auto-summary do in EIGRP?
0.0 no auto-summary where the command no auto-summary disables EIGRP auto-summarization and forces the router to advertise specific routes.
What is summary address EIGRP?
Description. This command lets you specify a summary address for routes advertised through a specific interface by EIGRP. This command must be applied only to interfaces. This address receives an administrative distance of 5, which is more preferred than regular EIGRP routes.
What is the default summarization option for EIGRP?
The default behavior of EIGRP is to summarize on network-number boundaries. This is similar to RIP and IGRP and is a prudent way for a routing protocol to reduce the number of routes that are propagated between routers. However, there are some enhancements in the way EIGRP summarizes routes that merit a closer look.
What is no auto summary?
To advertise and carry subnet routes in BGP, use an explicit network command or the no auto-summary command. If you disable auto-summarization and have not entered a network command, you will not advertise network routes for networks with subnet routes unless they contain a summary route.
What is EIGRP stub connected summary?
The EIGRP stub routing feature improves network stability, security, and reduces resource utilization. A device that is configured as a stub with the EIGRP Stub command shares connected and summary routing information with all neighbor devices by default.
Where can route summarization occur with EIGRP?
EIGRP manual summarization One of the advantages of EIGRP over some other routing protocols (like OSPF) is that manual summarization can be done on any router within a network. A single route can be used to represent multiple routes, which reduces the size of routing tables in a network.
What is EIGRP stub?
Stub routing is an EIGRP feature primarily designed to conserve local router resources, such as memory and CPU, and improve network stability. The stub routing feature is most commonly used in hub-and-spoke networks. The router will send Query packets the stub router if it needs information about a route or routes.
What is a stub router in EIGRP?
Stub routers in EIGRP, are nodes that are designed to be only directly connected to networks and are not designed to be in transit for the data plane. Meaning, EIGRP stub routers are designed for very small branch office routers or for edges of the network.
What is EIGRP in networking?
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. EIGRP is used on a router to share routes with other routers within the same autonomous system.
What is route summarization explain with help of example?
Route summarization is a method where we create one summary route that represent multiple networks/subnets. It’s also called route aggregation or supernetting. Saves CPU cycles: less packets to process and smaller routing tables to work on. Stability: Prevents routing table instability due to flapping networks.
What is EIGRP and how it works?
How EIGRP Works Neighbor Relationship. A router discovers a neighbor when it receives its first hello packet on a directly connected network. Reliable Transport Protocol. Diffusing Update Algorithm (DUAL) All route computations in EIGRP are handled by DUAL. Protocol-Dependent Module. EIGRP Packet Format.
What devices run using EIGRP?
The AS uses EIGRP as the routing protocol. Let’s say two of the border routers, BR1 and BR2, use Open Shortest Path First ( OSPF ) and the other, BR3, uses Routing Information Protocol (RIP). Routes learned by one of the OSPF border routers, BR1, can be conditionally redistributed into EIGRP.
What is EIGRP Cisco?
EIGRP was developed by Cisco in the mid-1980s to exchange Routing Table information between IP-based networks between Cisco Routers. EIGRP is a Distance Vector and Link State routing protocol. That is, it is a Hybrid protocol. The EIGRP protocol was developed because of the limitations of the RIP distance vector routing protocol.
How does the passive interface feature work in EIGRP?
Introduction. This document describes the passive-interface command,which can be used to control the advertisement of routing information.