Auto summary question

When using Rip v2 are you supposed to always issue the no auto command? In class we always did it but I was wondering if this is common practice in the real world.

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networker050184

Well, using RIP at all isn't really that common in the real world, but when it is used auto summary has been disabled from what I have seen.

tech-airman

1number9 wrote: »

When using Rip v2 are you supposed to always issue the no auto command? In class we always did it but I was wondering if this is common practice in the real world.

1number9,

What does auto summarization do?

tim100

1number9 wrote: »

I was wondering if this is common practice in the real world.

Yes. A real world example would be when a cable ISP assigns you a /29 block and gives you a managed router. The router usually uses RIPv2 with "no auto-summary" configured. This is then redistributed into their IGP. This /29 block is usually a subnet of a class A with many other /29 blocks being assigned to other customers.