Ethan Banks On productivity.

10 Words Or Less – RIP


IOS 12.4 Commands for RIP

auto-summary – auto-summarization across classful boundaries

default-information originate – generates a quad-zero route into the RIP domain

default-metric – metric to assign to redistributed routes

flash-update-threshold – suppresses flash/triggered updates if interval is less than threshold

input-queue – packet buffer, tweak higher to prevent overflow on slow routers

ip rip authentication key-chain – enables authentication and defines which key-chain to use

ip rip authentication mode – sets plaintext or MD5 authentication

ip rip receive version – override “version” to accept v1, v2, or both

ip rip send version – override “version” to send v1, v2, or both

ip rip triggered – enable triggered extensions to RIP on interface, partially RFC2091-compliant

ip rip v2-broadcast – broadcast to instead of multicast RIP updates

ip split-horizon (RIP) – enable split-horizon; enabled by default except on frame-relay + SMDS

ip summary-address rip – enables summarization on an interface; overrides auto-summarization

neighbor (RIP) – unicast RIP updates to a specific router

network (RIP) – enables RIP updates on interfaces matching classful network

offset-list (RIP) – artificially add hop-count to inbound or outbound RIP updates

output-delay – tweak RIP update inter-packet delay in milliseconds

router rip – starts the router’s RIP process

show ip rip database – show all routes known to RIP including summaries and auto-summaries

timers basic (RIP) – tweak update, invalid, holddown, and flush timers

validate-update-source – forces RIP neighbors to be on the same network

version – globally sets v1 or v2 for both send & receive

Believe it or not, this was a good exercise.  I saw some commands that I might have seen before, but don’t remember if I did.  Like so many things in life, writing this little article sent me off on several little rabbit trails, where I had to check into what “ip rip triggered” actually meant, and what a “flash update” really was.  What’s scary is that RIP is one of the smaller command sets to review.  How many rabbit trails will there be to go down when I start “10 Words” on BGP, OSPF, or QoS?  :-D


  • Hi Ethan,

    Being reading this blog almost since you started it and it’s great to see the progression that you have made. Your comment “How many rabbit trails will there be to go down when I start “10 Words” on BGP, OSPF, or QoS?” made me laugh. Makes the mind boggle doesn’t it at how much knowledge retention is required to get yourself through the exam. Along with reading your blog on a daily basis I also read CCIE Pursuit’s and IE’s blogs, it’s interesting to see where you are both up to and the differing strategies which you are employing in relation to tackling the lab. CCIE Pursuit currently rates himself at a readiness of 2 on a scale fo 1-10, how would you rate yourself? Have you seen the comments which one of the Brian’s from IE made with regards to lab preparation, namely that they are now recommending regurgitating the 1st 10 of their labs over and over to get the core principles down and to help with increasing speed. With hindsight would you tackle your lab syudy approach any differently than what you have done?

    One final thing, I noticed that you used another “unamed” vendors written test engine, any chance you could PM me with the details.


  • This is great idea to blog few words about particular technology.
    My favorite command from this list is ‘no validate-update-source’.
    One of the NMC labs shows real power of this command :)

By Ethan Banks
Ethan Banks On productivity.

You probably know Ethan Banks because he writes & podcasts about IT. For example, he co-authored "Computer Networks Problems & Solutions" with Russ White.

This site is Ethan on productivity--not tech so much.

Find out more on his about page.