Copy the matching bits and then add all zeros to determine the summarized network address

Activity 6.4.2: Challenge VLSM Calculation and Addressing Design (Instructor Version)

Step 3: Copy the matching bits and then add all zeros to determine the summarized network address

1. What are the matching bits for the two networks?

______________________________________________ 10101100.00010000.01000110 2. Add zeroes to make up the remainder of the network address in binary form.

______________________________________________ 10101100.00010000.010001 3. What is the network address for the summary route in decimal format?

______________________________________________

10101100.00010000.01000100.000000

Activity 6 . 4 . 5 : C h a l l e n g e R o u te S u m m a r iz a tio n ( I n s tr u cto r V e r s io n )

Topology Diagram

S-W EST LA N1 19 2.16 8 .7.0/27

S-W EST LA N2 19 2.16 8 .7.3 2/27

Li n k f r o m W EST t o N-W EST 19 2.16 8 .7.6 4 /3 0 Li n k f r o m W EST t o S-W EST 19 2.16 8 .7.6 8 /3 0 Li n k f r o m H Q t o W EST 19 2.16 8 .7.72/3 0

NW -B R 1 LA N1 19 2.16 8 .7.128 /27

NW -B R 1 LA N2 19 2.16 8 .7.16 0/27

NW -B R 2 LA N1 19 2.16 8 .7.19 2/28

NW -B R 2 LA N2 19 2.16 8 .7.208 /28

Li n k f r o m N-W EST t o NW -B R 1 19 2.16 8 .7.224 /3 0 Li n k f r o m N-W EST t o NW -B R 2 19 2.16 8 .7.228 /3 0

C ENT R A L LA N1 19 2.16 8 .6 .0/25

C ENT R A L LA N2 19 2.16 8 .6 .128 /26

Li n k f r o m H Q t o C ENT R A L 19 2.16 8 .6 .19 2/3 0

N-EA ST LA N1 19 2.16 8 .5 .0/27

N-EA ST LA N2 19 2.16 8 .5 .3 2/27

Li n k f r o m EA ST t o N-EA ST 19 2.16 8 .5 .19 2/3 0 Li n k f r o m EA ST t o S-EA ST 19 2.16 8 .5 .19 6 /3 0 Li n k f r o m H Q t o EA ST 19 2.16 8 .5 .200/3 0

SE-B R 1 LA N1 19 2.16 8 .4 .0/26

SE-B R 1 LA N2 19 2.16 8 .4 .6 4 /26

SE-B R 2 LA N1 19 2.16 8 .4 .128 /27

SE-B R 2 LA N2 19 2.16 8 .4 .16 0/27

SE-ST 1 LA N1 19 2.16 8 .4 .19 2/29

SE-ST 1 LA N2 19 2.16 8 .4 .200/29

SE-ST 2 LA N1 19 2.16 8 .4 .208 /29

SE-ST 2 LA N2 19 2.16 8 .4 .216 /29

Li n k f r o m SE-B R 2 t o SE-ST 1 19 2.16 8 .4 .224 /3 0 Li n k f r o m SE-B R 2 t o SE-ST 2 19 2.16 8 .4 .228 /3 0 Li n k f r o m S-EA ST t o SE-B R 2 19 2.16 8 .4 .23 2/3 0 Li n k f r o m S-EA ST t o SE-B R 1 19 2.16 8 .4 .23 6 /3 0

L e arn in g O b j e c t iv e s

U p o n c o m p l e t i o n o f t h i s a c t i v i t y , y o u w i l l b e a b l e t o :

• D e t e r m i n e s u m m a r i z e d r o u t e s t h a t c a n b e u s e d t o r e d u c e t h e s i z e o f r o u t i n g t a b l e s .

a d d r e s s a s s i g n m e n t s h a v e a l r e a d y b e e n c o m p l e t e d f o r t h e n e t w o r k s e g m e n t s . D e t e r m i n e s u m m a r i z e d r o u t e s t h a t c a n b e u s e d t o r e d u c e t h e n u m b e r o f e n t r i e s i n r o u t i n g t a b l e s .

Task 1: D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e S-W E ST L A Ns.

Step 1 : L i s t th e S-W E ST L A N1 a nd L A N2 i n bi na r y f o r m a t.

LA N1 ____________________________________________ 11000000.10101000.00000111.00000000 LA N2 ____________________________________________ 11000000.10101000.00000111.00100000 Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

1. H o w m a n y l e f t -m o s t m a t c h i n g b i t s a r e p r e s e n t i n t h e t w o n e t w o r k s ? _______ 26 2. W h a t i s t h e s u b n e t m a s k f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ?

____________________________________________ 25 5 .25 5 .25 5 .19 2

Step 3 : C o p y th e m a tc h i ng bi ts a nd th en a d d a l l z er o s to d eter m i ne th e s um m a r i z ed netw o r k a d d r es s . 1. W h a t i s t h e s u m m a r y r o u t e i n b i n a r y f o r m ?

____________________________________________

11000000.10101000.00000111.00000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .7.0

Task 2 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e NW -B R 1 L A Ns.

Step 1 : L i s t th e NW -B R 1 L A N1 a nd L A N2 i n bi na r y f o r m a t.

LA N1 ____________________________________________ 11000000.10101000.00000111.10000000 LA N2 ____________________________________________ 11000000.10101000.00000111.10100000 Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

1. H o w m a n y l e f t -m o s t m a t c h i n g b i t s a r e p r e s e n t i n t h e n e t w o r k s ? _______ 26 2. W h a t i s t h e s u b n e t m a s k f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ?

____________________________________________ 25 5 .25 5 .25 5 .19 2

____________________________________________

11000000.10101000.00000111.10000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .7.128

Task 3 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e NW -B R 2 L A Ns.

Step 1 : L i s t th e NW -B R 2 L A N1 a nd L A N2 i n bi na r y f o r m a t.

LA N1 ____________________________________________ 11000000.10101000.00000111.11000000 LA N2 ____________________________________________ 11000000.10101000.00000111.11010000

2. W h a t i s t h e s u b n e t m a s k f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 25 5 .25 5 .25 5 .224

____________________________________________

11000000.10101000.00000111.11000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .7.19 2

Task 4 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e No r t h w e st P o r t i o n o f t h e Ne t w o r k.

U s e t h e n e t w o r k s l i s t e d b e l o w t o d e t e r m i n e a s u m m a r y r o u t e f o r t h e No r t h w e s t p o r t i o n o f t h e n e t w o r k . Step 1 : L i s t th e No r th w es t netw o r k s eg m ents i n bi na r y f o r m a t.

NW -B R 1 Su m m a r y ____________________________________________

11000000.10101000.00000111.10000000

NW -B R 2 Su m m a r y ____________________________________________

11000000.10101000.00000111.11000000

Li n k f r o m N-W EST t o NW -B R 1 ____________________________________________

11000000.10101000.00000111.11100000

Li n k f r o m N-W EST t o NW -B R 2 ____________________________________________

11000000.10101000.00000111.11100100

Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

1. H o w m a n y l e f t -m o s t m a t c h i n g b i t s a r e p r e s e n t i n t h e n e t w o r k s ? _______ 25 2. W h a t i s t h e s u b n e t m a s k f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ?

____________________________________________ 25 5 .25 5 .25 5 .128

____________________________________________

11000000.10101000.00000111.10000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .7.128

Task 5 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e W e st P o r t i o n o f t h e Ne t w o r k.

U s e t h e n e t w o r k s l i s t e d b e l o w t o d e t e r m i n e a s u m m a r y r o u t e f o r t h e W e s t p o r t i o n o f t h e n e t w o r k . Step 1 : L i s t th e W es t netw o r k s eg m ents i n bi na r y f o r m a t.

S-W EST Su m m a r y ____________________________________________

11000000.10101000.00000111.00000000

N-W EST Su m m a r y ____________________________________________

11000000.10101000.00000111.10000000

Li n k f r o m W EST t o N-W EST ____________________________________________

11000000.10101000.00000111.01000000

Li n k f r o m H Q t o W EST ____________________________________________

11000000.10101000.00000111.01001000

Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

1. H o w m a n y l e f t -m o s t m a t c h i n g b i t s a r e p r e s e n t i n t h e n e t w o r k s ? _______ 24 2. W h a t i s t h e s u b n e t m a s k f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ?

____________________________________________ 25 5 .25 5 .25 5 .0

____________________________________________

11000000.10101000.00000111.00000000

2 . W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .7.0

Task 6 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e C e n t r al P o r t i o n o f t h e Ne t w o r k.

U s e t h e n e t w o r k s l i s t e d b e l o w t o d e t e r m i n e a s u m m a r y r o u t e f o r t h e C e n t r a l p o r t i o n o f t h e n e t w o r k . Step 1 : L i s t th e C entr a l netw o r k s eg m ents i n bi na r y f o r m a t.

C ENT R A L LA N1 ____________________________________________

11000000.10101000.00000110.00000000

C ENT R A L LA N2 ____________________________________________

11000000.10101000.00000110.10000000

Li n k f r o m H Q t o C ENT R A L ____________________________________________

11000000.10101000.00000110.11000000

Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

____________________________________________ 25 5 .25 5 .25 5 .0

____________________________________________

11000000.10101000.00000110.00000000

2 . W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .6 .0

Task 7 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e N-E A ST L A Ns.

Step 1 : L i s t th e N-E A ST L A N1 a nd L A N2 i n bi na r y f o r m a t.

LA N1 ____________________________________________ 11000000.10101000.00000101.00000000 LA N2 ____________________________________________ 11000000.10101000.00000101.00100000 Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

1. H o w m a n y l e f t -m o s t m a t c h i n g b i t s a r e p r e s e n t i n t h e n e t w o r k s ? _______ 26

____________________________________________

11000000.10101000.00000101.00000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .5 .0

Task 8 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e SE -B R 1 L A Ns.

Step 1 : L i s t th e SE -B R 1 L A N1 a nd L A N2 i n bi na r y f o r m a t.

LA N1 ____________________________________________ 11000000.10101000.00000100.00000000 LA N2 ____________________________________________ 11000000.10101000.00000100.01000000 Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

____________________________________________ 25 5 .25 5 .25 5 .128

____________________________________________

11000000.10101000.00000100.00000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .4 .0

Task 9 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e SE -B R 2 L A Ns.

Step 1 : L i s t th e SE -B R 2 L A N1 a nd L A N2 i n bi na r y f o r m a t.

LA N1 ____________________________________________ 11000000.10101000.00000100.10000000 LA N2 ____________________________________________ 11000000.10101000.00000100.10100000 Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

____________________________________________ 25 5 .25 5 .25 5 .19 2

____________________________________________

11000000.10101000.00000100.10000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .4 .128

LA N1 ____________________________________________ 11000000.10101000.00000100.11000000 LA N2 ____________________________________________ 11000000.10101000.00000100.11001000 Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

1. H o w m a n y l e f t -m o s t m a t c h i n g b i t s a r e p r e s e n t i n t h e n e t w o r k s ? _______ 28 2. W h a t i s t h e s u b n e t m a s k f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ?

____________________________________________ 25 5 .25 5 .25 5 .24 0

____________________________________________

11000000.10101000.00000100.11000000

2 . W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .4 .19 2

Task 11: D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e SE -ST2 L A Ns.

Step 1 : L i s t th e SE -ST 2 L A N1 a nd L A N2 i n bi na r y f o r m a t.

LA N1 ____________________________________________ 11000000.10101000.00000100.11010000 LA N2 ____________________________________________ 11000000.10101000.00000100.11011000 Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

____________________________________________ 25 5 .25 5 .25 5 .24 0

____________________________________________

11000000.10101000.00000100.11010000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .4 .208

Task 12 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e So u t h e ast P o r t i o n o f t h e Ne t w o r k.

U s e t h e n e t w o r k s l i s t e d b e l o w t o d e t e r m i n e a s u m m a r y r o u t e f o r t h e So u t h e a s t p o r t i o n o f t h e n e t w o r k . Step 1 : L i s t th e So uth ea s t netw o r k s eg m ents i n bi na r y f o r m a t.

SE-B R 1 Su m m a r y ____________________________________________

11000000.10101000.00000100.00000000

SE-B R 2 Su m m a r y ____________________________________________

11000000.10101000.00000100.10000000

SE-ST 1 Su m m a r y ____________________________________________

11000000.10101000.00000100.11000000

SE-ST 2 Su m m a r y ____________________________________________

11000000.10101000.00000100.11010000

Li n k f r o m SE-B R 2 t o Sa t e l l i t e 2 ____________________________________________

11000000.10101000.00000100.11100100

Li n k f r o m S-EA ST t o SE-B R 1 ____________________________________________

11000000.10101000.00000100.11101100

Li n k f r o m S-EA ST t o SE-B R 2 ____________________________________________

11000000.10101000.00000100.11101000

Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

____________________________________________ 25 5 .25 5 .25 5 .0

____________________________________________

11000000.10101000.00000100.00000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .4 .0

Task 13 : D e t e r m i n e t h e Su m m ar y R o u t e f o r t h e E ast P o r t i o n o f t h e Ne t w o r k.

U s e t h e n e t w o r k s l i s t e d b e l o w t o d e t e r m i n e a s u m m a r y r o u t e f o r t h e Ea s t p o r t i o n o f t h e n e t w o r k . Step 1 : L i s t th e E a s t netw o r k s eg m ents i n bi na r y f o r m a t.

S-EA ST Su m m a r y ____________________________________________

11000000.10101000.00000100.00000000

N-EA ST Su m m a r y ____________________________________________

11000000.10101000.00000101.00000000

Li n k f r o m EA ST t o N-EA ST ____________________________________________

11000000.10101000.00000101.11000000

Li n k f r o m EA ST t o S-EA ST ____________________________________________

11000000.10101000.00000101.11000100

Li n k f r o m H Q t o EA ST ____________________________________________

11000000.10101000.00000101.11001000

Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

1. H o w m a n y l e f t -m o s t m a t c h i n g b i t s a r e p r e s e n t i n t h e n e t w o r k s ? _______ 23 2. W h a t i s t h e s u b n e t m a s k f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ?

____________________________________________ 25 5 .25 5 .25 4 .0

____________________________________________

11000000.10101000.00000100.00000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .4 .0

Step 1 : L i s t th e E a s t, W es t, a nd C entr a l s um m a r y r o utes i n bi na r y f o r m a t.

EA ST Su m m a r y ____________________________________________

11000000.10101000.00000100.00000000

W EST Su m m a r y ____________________________________________

11000000.10101000.00000111.00000000

C ENT R A L Su m m a r y ____________________________________________

11000000.10101000.00000110.00000000

Step 2 : C o unt th e num ber o f l ef t-m o s t m a tc h i ng bi ts to d eter m i ne th e m a s k f o r th e s um m a r y r o ute.

1. H o w m a n y l e f t -m o s t m a t c h i n g b i t s a r e p r e s e n t i n t h e n e t w o r k s ? _______ 22 2. W h a t i s t h e s u b n e t m a s k f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ?

____________________________________________ 25 5 .25 5 .25 2.0

____________________________________________

11000000.10101000.00000100.00000000

2. W h a t i s t h e n e t w o r k a d d r e s s f o r t h e s u m m a r y r o u t e i n d e c i m a l f o r m a t ? ____________________________________________ 19 2.16 8 .4 .0

Activity 6.4.6: Troubleshooting Route Summarization (Instructor

In document ERouting Instructor Manual (Page 179-189)