What is ip OSPF message digest key?

February 22, 2020 Off By idswater

What is ip OSPF message digest key?

Description. This command enables MD5 password authentication for the interface. The keyid can be from 1 to 255; the key can be up to 16 bytes in length.

What is OSPF message?

OSPF Message Types OSPF uses five types of routing protocol packets, which share a common protocol header. LSU packets are used for the flooding of LSAs and sending LSA responses to LSR packets. It is sent only to the directly connected neighbors who have previously requested LSAs in the form of LSR packet.

What does the OSPF do?

The OSPF (Open Shortest Path First) protocol is one of a family of IP Routing protocols, and is an Interior Gateway Protocol (IGP) for the Internet, used to distribute IP routing information throughout a single Autonomous System (AS) in an IP network.

What is MD5 authentication?

The MD5 (message-digest algorithm) hashing algorithm is a one-way cryptographic function that accepts a message of any length as input and returns as output a fixed-length digest value to be used for authenticating the original message.

What can you protect If you implement OSPF security?

OSPF can be configured to authenticate every OSPF message. This is usually done to prevent a rogue router from injecting false routing information and therefore causing a Denial-of-Service attack.

What is the best practice for use OSPF?

Cisco OSPF Configuration Best Practices

  • Always set a router ID.
  • Precise network definition.
  • Default passive interface.
  • Use a different OSPF authentication for each neighbor.
  • Always redistribute with route maps, even static routes.
  • Keep areas to a bare minimum, and never use virtual links (unless you know what you are doing)

What are the advantages and disadvantages of OSPF?

no limitation on the hop count.

  • intelligent use of Variable Length Subnet Masks (VLSM) is very useful in IP address allocation.
  • IP multicasting to send link-state updates.
  • better convergence than RIP.
  • allowing better load balancing.
  • allowing a logical definition of networks where routers can be divided into areas.
  • Which is an example of No IP OSPF message digest key?

    The ip ospf message-digest key keyID md5 password command enables MD5 authentication and sets the password for the specified interface: Example 2: In the following example, the no ip ospf message-digest key keyID command deletes the MD5 authentication key ID 1 and its associated password from the specified interface:

    How to enable OSPF MD5 on R1 router?

    Both routers are running OSPF. To enable the MD5 authentication and set up the password of secret, we need to enter the following commands on R1: The same commands need to be entered on the neighboring router as well. We can verify that R1 is using OSPF MD5 authentication by using the show ip ospf INTERFACE command:

    Which is the area authentication command in OSPF?

    The area authentication message-digest command enables MD5 authentication for area 1 The interface pos command specifies an interface and changes the command mode to Interface configuration The ip ospf message-digest key keyID md5 password command enables MD5 authentication and sets the password for the specified interface:

    How to delete an interface password in OSPF?

    Use the ip ospf message-digest-key keyID md5 password command configure an interface password and key ID for MD5 authentication. Use the no ip ospf message-digest-key keyID command to delete a key ID and its associated password for this interface. Factory Default: No authentication key. Command Mode: Interface configuration.