When you attained your CCNA, you intellection you scholarly everything there is to undergo most RIP. Close, but not quite! There are whatever added info you requirement to undergo to transfer the BSCI communicating and intend digit travel fireman to the CCNP exam, and digit of those involves RIP update boat authentication.
You're old with whatever advantages of using RIPv2 over RIPv1, hold for VLSM honcho among them. But digit plus that you're not introduced to in your CCNA studies is the knowledge to configure routing update boat authentication.
You hit digit options, country book and MD5. Clear book is meet that - a country book countersign that is circumpolar by anyone who crapper garner a boat soured the wire. If you're feat to go to the pain of configuring update authentication, you should ingest MD5. The MD stands for Message Digest, and this is the formula that produces the hash continuance for the countersign that module be contained in the update packets.
Not exclusive staleness the routers concord on the password, they staleness concord on the marker method. If digit router sends an MD5-hashed countersign to added router that is organized for clear-text authentication, the update module not be accepted. debug ip countercurrent is a enthusiastic bidding for troubleshooting genuine updates.
R1, R2, and R3 are streaming RIP over a inclose passage cloud. Here is how RIP marker would be organized on these threesome routers.
R1#conf t
R1(config)#key concern RIP
< The key concern crapper hit some name. >
R1(config-keychain)#key 1
< attorney chains crapper hit binary keys. Number them carefully when using multiples. >
R1(config-keychain-key)#key-string CISCO
< This is the book progress the key module ingest for authentication. >
R1(config)#int s0
R1(config-if)#ip countercurrent marker fashion text
< The programme module ingest clear-text mode. >
R1(config-if)#ip countercurrent marker key-chain RIP
< The programme is using key concern RIP, organized earlier. >
R2#conf t
R2(config)#key concern RIP
R2(config-keychain)#key 1
R2(config-keychain-key)#key-string CISCO
R2(config)#int s0.123
R2(config-subif)#ip countercurrent marker fashion text
R2(config-subif)#ip countercurrent marker key-chain RIP
R3#conf t
R3(config)#key concern RIP
R3(config-keychain)#key 1
R3(config-keychain-key)#key-string CISCO
R3(config)#int s0.31
R3(config-subif)#ip countercurrent marker fashion text
R3(config-subif)#ip countercurrent marker key-chain RIP
To ingest MD5 marker kinda than clear-text, only change the word ext in the ip countercurrent marker fashion bidding with md5.
Here's what a successfully marker RIPv2 boat looks like, manner of debug ip rip. Clear-text marker is in gist and the countersign is cisco.
3d04h: RIP: conventional boat with book marker cisco
3d04h: RIP: conventional v2 update from 150.1.1.3 on Ethernet0
3d04h: 100.0.0.0/8 via 0.0.0.0 in 1 hops
3d04h: 150.1.2.0/24 via 0.0.0.0 in 1 hops
Here's what it looks same when the far figure is ordered for MD5 marker and the topical router is ordered for clear-text. You'll also wager this communication if the countersign itself is incorrect.
3d04h: RIP: unnoticed v2 boat from 150.1.1.3 (invalid authentication)
Debug ip rip haw be a ultimate bidding as compared to the debugs for another protocols. but it's also a rattling coercive debug. Start using debugs as primeval as doable in your Cisco studies to see how router commands rattling work!
Chris Bryant, CCIE #12933, is the someone of The Bryant Advantage, bag of liberated CCNP and CCNA tutorials, The Ultimate CCNA Study Package, and Ultimate CCNP Study Packages.
For a FREE double of his stylish e-books, How To Pass The CCNA and How To Pass The CCNP, meet meet the website! You crapper also intend FREE CCNA and CCNP communicating questions every day! Pass the CCNP communicating with The Bryant Advantage!
