Test Equipment
DNS Server IP address
Linux client computer
FTP server (testing to see its IP address)
For example, enter:
dig #10.1.1.172 ftp.clusters.site1.company.com
The output shows that the IP address for ftp.clusters.site1.company.com is 10.1.1.215:
; <<>> DiG 9.3.2 <<>> @10.1.1.172 ftp.clusters.site1.company.com
;; global options:
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47449
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; QUESTION SECTION:
;ftp.clusters.site1.company.com.
;; ANSWER SECTION:
ftp.clusters.site1.company.com. 10 IN
;; AUTHORITY SECTION:
clusters.site1.company.com. 120
wkstn1.clusters.site1.company.com
;; ADDITIONAL SECTION:
wkstn1.clusters.site1.company.com. 120 IN
;; Query time: 0 msec
;; SERVER: 10.1.1.172#53(10.1.1.172)
;; WHEN: Tue Aug 14 17:19:55 2008
;; MSG SIZE
rcvd: 98
4 Use the -x option for the dig utility to perform a baseline test to check the reverse lookup
records in the DNS server by the IP address.
For example, enter
dig @10.1.1.172 -x 10.1.1.215
The output shows the DNS name for the FTP server is ftp.clusters.site1.company.com:
Sample Value
10.1.1.172
wkstn1.clusters.site1.company.com
10.1.1.215
ftp.clusters.site1.company.com
printcmd
IN
IN
A
A
10.1.1.215
NS
A
10.1.1.172
Using Dynamic DNS with BCC 1.2 157
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