Re: Help with manual summarization question required.

"PSK" <trouzourt@[EMAIL PROTECTED]
> wrote in news:nf%Pj.1913$XI1.335@[EMAIL PROTECTED]
> you are correct jason ..
> /19 --> 32 blocksize ... 172.16.128.0 -- 172.16.159.255
> 
> since D is only / 28 --> 16 block size ..  172.16.124.0 --
> 172.16.124.15 which does not over lap.
> 
> if your book has a website, i'd check there for corrections... it
> happens from time to time.. its all good.. you are not crazy ..
> 
> 
> 
> "Jason" <SpamSpamSpam@[EMAIL PROTECTED]
> wrote in message 
> news:Xns9A8973D6FE767SpamSpamSpamSpani****@[EMAIL PROTECTED]
>> Can anyone explain the answer to this Boson ICND2 question, the
>> question states:
>>
>> An engineer has implemented manual route summarisation with EIGRP in
>> which the one summary route is 172.16.128.0/19. Another engineer
>> needs to install
>> a new VLAN & subnet. The following are some of the subnet numbers
>> being considered by the second engineer for the new subnet. Which one
>> lists a subnet that would not be represented as part of the existing
>> summary route?
>>
>> A. 172.16.144.0/28
>>
>> B. 172.16.164.160/28
>>
>> C. 172.16.180.0/28
>>
>> D. 172.16.124.0/28
>>
>> E. 172.16.152.128/28
>>
>> The answers are B & C but D also does not overlap? The explanation
>> states that the summary route represents the following range of
>> numbers: 
>>
>> 172.16.128.0 - 172.16.159.255
>>
>> The answers represent:
>>
>> 172.16.144.0/28: 172.16.144.0 - 172.16.144.15
>>
>> 172.16.152.128/28: 172.16.152.128 - 172.16.152.143
>>
>> 172.16.164.160/28: 172.16.164.160 - 172.16.164.175
>>
>> 172.16.180.0/28: 172.16.180.0 - 172.16.180.15
>>
>> 172.16.124.0/28: 172.16.124.0 - 172.16.124.15
>>
>> What am I missing? 
> 
> 

Thanks for putting my mind at ease, it made no sense to me.