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The same autonomous system number must be configured for the EIGRP domain. The parameters are basic troubleshooting considerations for an EIGRP network. For troubleshooting IPv6 we only use the “ IPv6” instead of “ IP” for example “ show ipv6 interface brief” EIGRP Parameters If the ping is unsuccessful, then check the network cabling and also check that the interfaces on connected devices are on a common subnet. Similarly, we can use the same command for troubleshooting EIGRP for IPv6. The ping to all these networks is successful. R1 shows connectivity to R2, R3, and local networks. Figure 1 illustrates the “ show ip interface brief” command output for R1. The “ping” command also verify the layer 3 connectivity from one router to another, directly connected router, this command also confirm IPv4 connectivity between the devices. We can verify the status and protocol of connecting interfaces using this command. We can verify the layer3 connectivity using the “ show ip interface brief” command. Without layer 3 connectivity, the neighbor adjacencies are not possible. Layer 3 Connectivityįor neighbor adjacencies the layer 3 connectivity is important. Check the interface bandwidth for the troubleshooting of this problem. If all the routes are in the routing table, but the path that traffic takes is not correct, this is maybe due to the interface bandwidth values. Automatic summarization is causing inconsistent routing in a dis-contiguous network.Due to ACL, which is blocking the advertised remote networks?.An incorrectly configured passive interface.The network is not advertised on remote routers.If two routers formed EIGRP neighbor adjacency, but a connection issue persists, this is maybe due to a routing problem and sometimes this may due to a connectivity problem for EIGRP including: Maybe the interfaces are not enabled for the EIGRP process.The mismatch autonomous system numbers.The interface between the devices is down.Neighbor adjacency might not be created for several reasons, including: We can test the connectivity by using the ping command, if the ping fails, check the neighbor adjacencies using the “show ip eigrp neighbors” command.
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The first step after the configuration of the EIGRP is to test the connectivity to the remote network. The difference when using it for IPv6 is the use of “IPv6” instead of “IP”. The commands can also be used for EIGRP troubleshooting for IPv6. The most used command for EIGRP troubleshooting is the “show ip eigrp neighbors”, “show ip route”, and “show ip protocols”.
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There are numerous commands that are important during EIGRP troubleshooting. Due to the importance of EIGRP troubleshooting problems related to this protocol is an important ability for a network administrator.