Configures an eigrp router as a stub router that will only receive routes from upstream and not advertise any routes to its neighboring routers. Do eigrp routers behind an eigrp stub router send query messages to the stub router in a case where that stub router is the only transit connection for. Eigrp is a ciscoproprietary hybrid routing protocol, incorporating features of. Eigrp stub routing 126535 the cisco learning network. We can use any asn autonomous system number from 1 to 65,535. Static routes are commonly used when routing from a network to a stub network. The underlying algorithm is reputed to be optimal with respect to the eigrp metric. Eigrp stub routingautonomous system configuration 177. Changing stub setting or routerids still resets peers. Pdf distance vector routing protocols were popular choice among network.
State is passive, query origin flag is 1, 2 successors, fd is. Regarding the command eigrp stub connected static summary am i right in thinking that when configured its on my core stack of switches the following is true. Eigrp stub routing feature improves network stability, reduce resources utilization and simplifies stub router configuration. Stub routing is an eigrp feature primarily designed to conserve local router resources, such as memory and cpu, and improve network stability. How to configure eigrp stub routing configuring the eigrp stub routing autonomous system configuration summary steps 1. Eigrp is an enhanced version of igrp developed by cisco. Please sign upsign in here in order to add this article to your favorites. Pdf a survey of the eigrp standard and following opensource.
Scaling eigrp networks with stub routers nil learning. How to configure eigrp on your cisco router by david davis in cisco intermediate we noticed you are not a member yet. Enable stub routing eigrp stub receiveonly connected static summary. In order to become eigrp neighbors this number must be same on all participates.
This feature is configured only on the spoke routers. The ospf stub feature lets your router set the metric in the lsa to the maximum metric. If you are keeping up with ciscos announcements regarding eigrp, you are aware that cisco has released their proprietary routing protocol into the open. The stub routing feature is most commonly used in hubandspoke networks. In a hubandspoke network, one or more end stub networks are connected to a remote device the spoke. Unlike igrp and rip, eigrp does not send out periodic route updates. To view rather or not a neighbor is an eigrp stub router use the show ip eigrp neighbor detail command in privileged mode as shown below.
The eigrp hello timer can be adjusted on a per interface basis. The eigrp stub routing feature improves network stability, reduces resource utilization, and simplifies the stub device configuration. Pdf on the convergence of the eigrp routing protocol. This prevents the router temporarily from being a transit router.
Automatically advertises connected routes without any further config in the eigrp process will not allow for the automatic redistribution of configured static routes on my core switch. Ciscos proprietary routing protocol eigrp is one of the two most widely employed routing protocols in the internet. However, one of the pieces they are keeping close to the vest is the stub feature. In addition to the hello timer, eigrp neighbors are stamped with a hold timer. In this article ill explain the basics of eigrp to cisco ccna students. Stub routing is commonly used in hubandspoke network topologies. Ccnp route chapter 2 lab 22, eigrp stub routing version 7. Configuring eigrp stub area networks free ccna workbook. Any neighbor that receives a packet informing it of the stub status will not query the stub router for any routes. Stub router functionality, which cisco introduced in cisco ios software release 12. Eigrp stub configuration command increases scalability by limiting the.
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