BÀI 4 XÂY DỰNG DNS SERVER (BỘ MÔN TRIỂN KHAI ỨNG DỤNG MẠNG)

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
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
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"###$%&'$(#)*&+'+', /0#1
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

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DNS Client
mail1.contoso.msft
172.16.64.11

Database
Local DNS Server
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microsoft
DNS Servers
DNS Server
Root (.) Servers
com
Client
Root Hints
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microsoft.com

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Local DNS Server
Client Server
 !"#$%

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^7+I?@4<7&G'h#79':/
Where’s
ServerA?
ServerA is at
192.168.8.44
Where’s
ServerA?
ServerA is at
192.168.8.44
Client1
Client2
ServerA
DNS server cache
Host name IP address TTL
ServerA.microsoft.com 192.168.8.44 28 seconds
 !"#$%

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7+&+'+'/
SOA query for a zone
SOA query answered
IXFR or AXFR query for a zone

IXFR or AXFR query answered
(zone transferred)
1
1
2
2
3
3
4
4
Secondary server
Primary and
Master server
 !"#$%

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Secondary Server
Primary and
Master Server
DNS notify
Zone transfer
Source ServerDestination Server
1
1
2
2

3
3
4
4
Resource record is
updated
SOA serial number is
updated
 !"#$%

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