課程影片與練習

課程簡介
第1週:網路架構與七層參考模式簡介
第2週:IEEE 802.3 乙太網路 (Ethernet)
第3週:IEEE 802.11 無線區域網路 (Wireless LAN)
第5週:IEEE 802.1Q 虛擬區域網路 (Virtual LAN)
第6週:區域網路可靠傳輸技術 -- 滑動視窗技術
第7週:路由器運作原理以及網路互連技術
第8週:TCP 與網路阻塞偵測與控制技術

4.23 For the following bridged network configuration. Assume the spanning tree is constructed according to the IEEE 802.1D spanning tree algorithm. Please fill in the table for the constructed spanning tree. Use integer “0” to indicate the root port number if none of its ports of a bridge is a “root port”.

針對下列橋接網路架構. 假設該擴張樹是依據 IEEE 802.1D 擴張樹演算法建造的. 請根據建造出來的擴張樹填妥下列表格 (每一空格請填入一數字).如果一個橋接器的所有埠都不是“root port”,請填入數字“0” 來表示其root port 的埠編號.

 

Root port number

Root path cost (RPC)

Designated bridge ID

Designated port number

Bridge 1

a

b

 

 

Bridge 2

c

d

 

 

Bridge 3

e

f

 

 

Bridge 4

g

h

 

 

LAN 1

 

 

i

j

LAN 2

 

 

k

l

LAN 3

 

 

m

n

 

a
b
c
d
e
f
g
h
i
j
k
l
m
n

4.24 For the following bridged network configuration. Assume the spanning tree is constructed according to the IEEE 802.1D spanning tree algorithm. Please fill in the table for the constructed spanning tree. Use integer “0” to indicate the root port number if none of its ports of a bridge is a “root port”.

針對下列橋接網路架構. 假設該擴張樹是依據 IEEE 802.1D 擴張樹演算法建造的. 請根據建造出來的擴張樹填妥下列表格 (每一空格請填入一數字).如果一個橋接器的所有埠都不是“root port”,請填入數字“0” 來表示其root port 的埠編號.

 

Root port number

Root path cost (RPC)

Designated bridge ID

Designated port number

Bridge 1

0

0

 

 

Bridge 2

a

b

 

 

Bridge 3

c

d

 

 

Bridge 4

e

f

 

 

Bridge 5

g

h

 

 

Bridge 6

i

j

 

 

Bridge 7

k

l

 

 

Bridge 8

m

n

 

 

LAN 1

 

 

o

p

LAN 2

 

 

q

r

LAN 3

 

 

s

t

LAN 4

 

 

u

v

LAN 5

 

 

w

x

LAN 6

 

 

y

z

LAN 7

 

 

aa

bb

 

a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
aa
bb

4.25 Consider the spanning tree constructed in question 24. Please fill in the table for the re-constructed spanning tree when bridge 6 is failed. Use integer “0” to indicate the root port number if none of its ports of a bridge is a “root port”.

參考第24題的所建置的擴張樹. 假設此時發生橋接器 6 毀損,請根據重新建造出來的擴張樹填妥下列表格 (每一空格請填入一數字).如果一個橋接器的所有埠都不是“root port”,請填入數字“0” 來表示其root port 的埠編號.

 

Root port number

Root path cost (RPC)

Designated bridge ID

Designated port number

Bridge 1

a

b

 

 

Bridge 2

c

d

 

 

Bridge 3

e

f

 

 

Bridge 4

g

h

 

 

Bridge 5

i

j

 

 

Bridge 6

 

 

 

 

Bridge 7

k

l

 

 

Bridge 8

m

n

 

 

LAN 1

 

 

o

p

LAN 2

 

 

q

r

LAN 3

 

 

s

t

LAN 4

 

 

u

v

LAN 5

 

 

w

x

LAN 6

 

 

y

z

LAN 7

 

 

aa

bb

 

a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
aa
bb

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