What command displays the OSPF section of the running configuration?
The show ip route [ospf | subnet mask] command can be used to display OSPF routes in the current routing table. The show ip protocols and show ip ospf interface [brief] commands can be used to display which areas are configured on a device.
What authentication does OSPF use?
MD5
OSPF supports Clear Text and Message Digest 5 (MD5) authentications. Two of the most common authentications when working with business-grade routers. Today, we will dive into configuring these authentications as well as looking at verification commands. OSPF can be configured to authenticate every OSPF message.
How can I tell if my OSPF router is designated?
Based on the priority you configured for a specific OSPF interface, you can confirm the address of the area’s designated router. The DR ID, DR, or DR-ID field displays the address of the area’s designated router. The BDR ID, BDR, or BDR-ID field displays the address of the backup designated router.
Does OSPF support authentication?
Configuring OSPF MD5 authentication is very similar to configuring clear-text authentication. Two commands are also used: First you need to configure the MD5 value on an interface by using the ip ospf message-digest-key 1 md5 VALUE interface command.
How check DR and BDR in OSPF?
OSPF figures this out by looking at the interface type. For example, an Ethernet interface is considered a multi-access network, and a serial interface is considered a point-to-point interface. From R1 perspective, R2 is the BDR and R3 is the DR.
How do I configure MD5 authentication for OSPF?
For MD5 authentication you need different commands. First use ip ospf message-digest-key X md5 to specify the key number and a password. It doesn’t matter which key number you choose but it has to be the same on both ends. To enable OSPF authentication you need to type in ip ospf authentication message-digest.
What is Show IP OSPF neighbor?
Indicates the IP address of the interface to which the neighbor is directly connected. Interface. Indicates the interface on which the OSPF neighbor has formed adjacency. Options. Number of neighboring options in the network.
What is the purpose of the show ip OSPF interface command *?
This command is used to show how OSPF has been configured on an interface level, as well as how it is working at the interface. This level of detail is excellent for troubleshooting configuration errors.