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When you earned your CCNA, you thought you learned anything there is to know about RIP. Close, but not rather There are some added particulars you want to know to pass the BSCI exam and get a single step closer to the CCNP exam, and one particular of these entails RIP update packet authentication. You are familiar with some benefits of making use of RIPv2 more than RIPv1, assistance for VLSM chief among them. But 1 advantage that youre not introduced to in your CCNA studies is the ability to configure routing update packet authentication. You have two possibilities, clear text and MD5. Dig up further on our related essay - Hit this website http://www.news9.com/story/29270099/protectimus-launches-new-one-time-password-service-as-alternative-to-the-two-factor-authentication-provider. In the event you fancy to discover further about Protectimus Launches New One-time Password Service As Alternative To The Two Factor Authentication Provider, there are many resources people could investigate. Clear text is just that - a clear text password that is visible by anybody who can choose a packet off the wire. If you are going to go to the trouble of configuring update authentication, you should use MD5. The MD stands for "Message Digest", and this is the algorithm that produces the hash value for the password that will be contained in the update packets. Not only should the routers agree on the password, they have to agree on the authentication method. If one router sends an MD5-hashed password to an additional router that is configured for clear-text authentication, the update will not be accepted. debug ip rip is a excellent command for troubleshooting authenticated updates. R1, R2, and R3 are operating RIP over a frame relay cloud. Right here is how RIP authentication would be configured on these three routers. R1#conf t R1config#essential chain RIP The key chain can have any name. R1config-keychain#important 1 Key chains can have multiple keys. Number them carefully when using multiples. R1config-keychain-important#crucial-string CISCO This is the text string the key will use for authentication. R1config#int s0 R1config-if#ip rip authentication mode text The interface will use clear-text mode. R1config-if#ip rip authentication essential-chain RIP The interface is using key chain RIP, configured earlier. R2#conf t R2config#important chain RIP R2config-keychain#important 1 R2config-keychain-important#key-string CISCO R2config#int s0.123 R2config-subif#ip rip authentication mode text R2config-subif#ip rip authentication important-chain RIP R3#conf t R3config#important chain RIP R3config-keychain#crucial 1 R3config-keychain-crucial#crucial-string CISCO R3config#int s0.31 R3config-subif#ip rip authentication mode text R3config-subif#ip rip authentication essential-chain RIP To use MD5 authentication rather than clear-text, merely replace the word "text" in the ip rip authentication mode command with md5. Heres what a effectively authentication RIPv2 packet looks like, courtesy of debug ip rip. Clear-text authentication is in impact and the password is "cisco". 3d04h RIP received packet with text authentication cisco 3d04h RIP received v2 update from 150.1.1.three on Ethernet0 3d04h 100.../8 by means of ... To get additional information, consider checking out Protectimus Launches New One-time Password Service As Alternative To The Two Factor Authentication Provider. in 1 hops 3d04h 150.1.2./24 via ... in 1 hops Heres what it looks like when the remote device is set for MD5 authentication and the regional router is set for clear-text. Youll also see this message if the password itself is incorrect. 3d04h RIP ignored v2 packet from 150.1.1.3 invalid authentication "Debug ip rip" might be a straightforward command as compared to the debugs for other protocols. but its also a extremely effective debug. Discover more on our favorite partner use with - Click here http://www.kljb.com/story/29270099/protectimus-launches-new-one-time-password-service-as-alternative-to-the-two-factor-authentication-provider. Start off utilizing debugs as early as possible in your Cisco research to learn how router commands truly operate.