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  • Will You Add? - Cisco CCNP BSCI 642-901 Tutorial: Clear Text OSPF Neighbor Authentication

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    t’s set a password of passbscitest and then check the router config.

    R1(config-if)#ip ospf authentication-key ?

    <0-7> Encryption type (0 for not yet encrypted, 7 for proprietary)

    LINE The OSPF password (key) Mortgage Loan Shopping: LendingTree, E-Loan or Quicken Loans?
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    An OSPF adjacency can be authenticated with MD5 (Message Digest 5) or with a clear-text password. I’m not much on clear-text passwords, and hopefully you aren’t either! Whether you’re working in the real world or the certification exam room, though, it’s always a good idea to know more than one way to do things. Let’s take a look at how to configure clear-text authentication of an OSPF neighbor relationship.

    The commands we’ll use are “ip ospf authentication-key” and “ip ospf authentication”. In this example, we have preexisting adjacencies between three routers in an OSPF NBMA network. The hub router (R1) has an adjacency with two spoke routers, R2 and R3.

    The password is set by the interface-level command ip ospf authentication-key. While Cisco routers will usually tell you when you’re about to try to do something that you can’t do, this password is a rare exception to the rule. Let’s set a password of passbscitest and then check the router config.

    R1(config-if)#ip ospf authentication-key ?

    <0-7> Encryption type (0 for not yet encrypted, 7 for proprietary)

    LINE The OSPF password (key)

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    tion exam room, though, it’s always a good idea to know more than one way to do things. Let’s take a look at how to configure clear-text authentication of an OSPF neighbor relationship.

    The commands we’ll use are “ip ospf authentication-key” and “ip ospf authentication”. In this example, we have preexisting adjacencies between three routers in an OSPF NBMA network. The hub router (R1) has an adjacency with two spoke routers, R2 and R3.

    The password is set by the interface-level command ip ospf authentication-key. While Cisco routers will usually tell you when you’re about to try to do something that you can’t do, this password is a rare exception to the rule. Let’s set a password of passbscitest and then check the router config.

    R1(config-if)#ip ospf authentication-key ?

    <0-7> Encryption type (0 for not yet encrypted, 7 for proprietary)

    LINE The OSPF password (key) Want To Improve Your Emini Trading Results? Here's The Easiest, Quickest Solution
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    The password is set by the interface-level command ip ospf authentication-key. While Cisco routers will usually tell you when you’re about to try to do something that you can’t do, this password is a rare exception to the rule. Let’s set a password of passbscitest and then check the router config.

    R1(config-if)#ip ospf authentication-key ?

    <0-7> Encryption type (0 for not yet encrypted, 7 for proprietary)

    LINE The OSPF password (key) Web Site Promotion – How to Begin with Web Promotion
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    R1(config-if)#ip ospf authentication-key ?

    <0-7> Encryption type (0 for not yet encrypted, 7 for proprietary)

    LINE The OSPF password (key) Cheap Tenant Loan - Exclusively For Tenants
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    R1(config-if)#ip ospf authentication-key ?

    <0-7> Encryption type (0 for not yet encrypted, 7 for proprietary)

    LINE The OSPF password (key)

    R1(config-if)#ip ospf authentication-key passbscitest

    R1#show config

    interface Serial0

    ip address 172.12.123.1 255.255.255.0

    encapsulation frame-relay

    ip ospf authentication-key passbsci

    I entered a 12-character password, but only the first eight are showing in the router configuration. The router failed to warn us that this particular password has a limit of eight characters. As of IOS 12.4, the router now warns the admin about this, but there are plenty of routers out there that aren’t running that recent a release!

    Clear-text authentication is enabled with the ip ospf authentication command. IOS Help shows there is no specific command for clear-text authentication. (Null and clear-text authentication are not the same thing.)

    R1(config)#int serial0

    R1(config-if)#ip ospf authentication ?

    message-digest Use message-digest authenticatio

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