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From "Abhinav Roy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-1647) IP Reservation should not happen if the guest-vm cidr and network cidr is not same but their start ip and end ip are same.
Date Tue, 12 Mar 2013 14:01:13 GMT
Abhinav Roy created CLOUDSTACK-1647:
---------------------------------------

             Summary: IP Reservation should not happen if the guest-vm cidr and network cidr
is not same but their start ip and end ip are same.
                 Key: CLOUDSTACK-1647
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1647
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: API
    Affects Versions: 4.2.0
            Reporter: Abhinav Roy
            Assignee: Saksham Srivastava
             Fix For: 4.2.0


Steps :-
======================
1. Create a guest network with Netscaler offering . Once the network is created you will find
the CIDR as something like 10.0.144.0/20.
2. Now implement the network and implement ip reservation by passing guestvmcidr as 10.0.151.0/20.


Observation :-
=====================
The set of ips which come under the cidr 10.0.144.0/20

Address:   10.0.144.0            00001010.00000000.1001 0000.00000000
Netmask:   255.255.240.0 = 20    11111111.11111111.1111 0000.00000000
Wildcard:  0.0.15.255            00000000.00000000.0000 1111.11111111
=>
Network:   10.0.144.0/20         00001010.00000000.1001 0000.00000000 (Class A)
Broadcast: 10.0.159.255          00001010.00000000.1001 1111.11111111
HostMin:   10.0.144.1            00001010.00000000.1001 0000.00000001
HostMax:   10.0.159.254          00001010.00000000.1001 1111.11111110
Hosts/Net: 4094                  (Private Internet)

is same as the set of ips which come under the cidr 10.0.151.0/20

Address:   10.0.151.0            00001010.00000000.1001 0111.00000000
Netmask:   255.255.240.0 = 20    11111111.11111111.1111 0000.00000000
Wildcard:  0.0.15.255            00000000.00000000.0000 1111.11111111
=>
Network:   10.0.144.0/20         00001010.00000000.1001 0000.00000000 (Class A)
Broadcast: 10.0.159.255          00001010.00000000.1001 1111.11111111
HostMin:   10.0.144.1            00001010.00000000.1001 0000.00000001
HostMax:   10.0.159.254          00001010.00000000.1001 1111.11111110
Hosts/Net: 4094                  (Private Internet)
----------------------------------

Expected behaviour :-
=================================
In cases like these where the start ip and end ip of guest vm cidr and network cidr are same,
the reservation procedure should not go through and user should get a message mentioning that.



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