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Summarizing without over-summarization
I'm sure some will say this is a CCNA question... 
Bear with me, just seeking clarification...
But, i'm going over the CCNP BSCI Official Exam Cert Guide 4th Ed. In ch2 Q&A, it asks...
Summarize the following without over-summarizing:
- 192.168.160.0/24
- 192.168.162.0/23
- 192.168.161.0/24
- 192.168.164.0/22
It gives the ans in the appendix as 192.168.160.0/21. While this summarizes all the addresses, I'm sure it over-summarizes with 165.0, 166.0 & 167.0 included in the summary address.
Bear with me, just seeking clarification...But, i'm going over the CCNP BSCI Official Exam Cert Guide 4th Ed. In ch2 Q&A, it asks...
Summarize the following without over-summarizing:
- 192.168.160.0/24
- 192.168.162.0/23
- 192.168.161.0/24
- 192.168.164.0/22
It gives the ans in the appendix as 192.168.160.0/21. While this summarizes all the addresses, I'm sure it over-summarizes with 165.0, 166.0 & 167.0 included in the summary address.
CCNA (Expired...), MCSE, CWNA, BSc Computer Science
Working on renewing CCNA!
Working on renewing CCNA!
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aquilla
Member Posts: 148 ■■■□□□□□□□
That's correct.
192.168.160.0/24 = 192.168.160.0 - 192.168.160.255
192.168.161.0/24 = 192.168.161.0 - 192.168.161.255
192.168.162.0/23 = 192.168.162.0 - 192.168.163.255
192.168.164.0/22 = 192.168.164.0 - 192.168.167.255
Therefore the summary address of 192.168.160.0/21 is right.
S.Regards,
CCNA R&S; CCNP R&S -
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mkomon
Member Posts: 37 ■■□□□□□□□□
Hi,
165.0, 166.0 & 167.0 are all covered by the 192.168.164.0/22 subnet. 192.168.160.0/21 makes no over-summarization.
HTH,
Martin -
Optionsr_durant
Member Posts: 486 ■■■□□□□□□□
That's correct.
192.168.160.0/24 = 192.168.160.0 - 192.168.160.255
192.168.161.0/24 = 192.168.161.0 - 192.168.161.255
192.168.162.0/23 = 192.168.162.0 - 192.168.163.255
192.168.164.0/22 = 192.168.164.0 - 192.168.167.255
Therefore the summary address of 192.168.160.0/21 is right.
S.
I feel like a dope...I didn't expand "192.168.164.0/22 = 192.168.164.0 - 192.168.167.255"
Thanks...CCNA (Expired...), MCSE, CWNA, BSc Computer Science
Working on renewing CCNA!