> > > How many class C addresses can be summarized with 172.92.172.20/20?
> > >
> > > Is 16 the correct answers? Because there's 4 bit's left for host
>addresses?
> > > 2 powered by 4 is 16.
> > >
> > > Can one of you confirm this.
>
>172.92.172.20 is a Class B address. How can you summarise a Class C
>addresses with a Class B?
>--
May I suggest that this discussion is confusing due to classful
terminology? Since summarization is beyond the CCNA level, and the
certifications beyond CCNA now assume classless addressing, it's more
appropriate to phrase the question as:
How many /24 prefixes will summarize into a /20?
172.x.x.x is a Class B only under classful assumptions. Class is
irrelevant in a classless environment.
It's also confusing to think of supernetting class C's.
"What Problem are you trying to solve?"
***send Cisco questions to the list, so all can benefit -- not
directly to me***
Howard C. Berkowitz [EMAIL PROTECTED]
Technical Director, CertificationZone.com
Senior Product Manager, Carrier Packet Solutions, NortelNetworks (for ID only)
but Cisco stockholder!
"retired" Certified Cisco Systems Instructor (CID) #93005
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