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Task 6Managing IP Addresses by Using DNS
About Managing IP Addresses
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Basic Dial NMS Implementation Guide
Using Cisco Network Registrar CLI Command s
Database locking prevents multiple users from writing to the same database records concurrently.
However, an administrator may occasionally not exit a session properly, and the database may be left
locked. To release the lock on the database, use the
force-lock
network registrar command.
Network registrar commands sent from the Unix shell lock the database only while commands are
running.
The name for a reverse zone is the inverse of your Internet network number, added to the special domain
in-addr.arpa. For example if the network number is 1.2.3.0, the reverse zone name is 3.2.1.in-addr.arpa.
A second example is the network number 1.2.0.0 with the reverse zone of 2.1.in-addr.arpa.
For a description of the network registrar CLI commands, go to
http://www.cisco.com/univercd/cc/td/doc/product/rtrmgmt/ciscoasu/nr/nr30t/cliref/cli01.htm#68483
To quickly perform administrative tasks by using CNR CLI commands, follow these steps:
Step 1
Log in to the Cisco Network Registrar application by entering the following directory path:
/opt/nwreg2/usrbin/nrcmd
nrcmd>
After logging in, the command mode is accessed and the prompt “nrcmd>” appears.
Step 2
To create an account for an administrator, enter the
admin
command and an associated password:
nrcmd> admin bob create password=xyz
In this example, the administrator name is
bob
. The password is
xyz
.
Step 3
To see a list of existing administrators, enter the
admin list
command:
nrcmd> admin list
bob: password=********;
omar: password=********;
padma: password=********;
Note
The
admin list
command is a read-only command.
Step 4
Inspect a reverse zone by entering the
zone
command and
listRR
option:
nrcmd> zone 101.21.172.in-addr.arpa. listRR
100 Ok
Static Resource Records
@ IN SOA onionring.the.net. netadmin.the.net 1997121601
3600 1800 86400 86400
@ IN NS onionring.the.net.com.
205 IN PTR unused-205.the.net.
203 IN PTR unused-203.the.net.
210 IN PTR unused-210.the.net.
204 IN PTR unused-204.the.net.
1 IN PTR unused-1.the.net.
10 IN PTR unused-10.the.net.
101 IN PTR unused-101.the.net.
102 IN PTR unused-102.the.net.
103 IN PTR unused-103.the.net.
104 IN PTR unused-104.the.net.
(truncated for brevity)