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From "Saksham Srivastava (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CLOUDSTACK-1748) IP Reservation results in reserving the broadcast IP of the network as well
Date Mon, 22 Apr 2013 05:21:15 GMT

     [ https://issues.apache.org/jira/browse/CLOUDSTACK-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Saksham Srivastava resolved CLOUDSTACK-1748.
--------------------------------------------

    Resolution: Not A Problem
    
> IP Reservation results in reserving the broadcast IP of the network as well
> ---------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-1748
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1748
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Network Controller
>    Affects Versions: 4.2.0
>            Reporter: Abhinav Roy
>            Assignee: Saksham Srivastava
>             Fix For: 4.2.0
>
>
> Description :
> ========================
> Ip reservation results in reservation of broadcast ip of the network as well.
> Steps :
> =======================
> 1. Create a guest network with CIDR 10.1.1.0/24
> 2. Make IP reservation with 10.1.1.0/25
> Expected result :
> ======================
> The broadcast IP of the guest CIDR 10.1.1.0/25 is 10.1.1.127 , now this IP should not
be reserved.
> Address:   10.1.1.0              00001010.00000001.00000001.0 0000000
> Netmask:   255.255.255.128 = 25  11111111.11111111.11111111.1 0000000
> Wildcard:  0.0.0.127             00000000.00000000.00000000.0 1111111
> =>
> Network:   10.1.1.0/25           00001010.00000001.00000001.0 0000000 (Class A)
> Broadcast: 10.1.1.127            00001010.00000001.00000001.0 1111111
> HostMin:   10.1.1.1              00001010.00000001.00000001.0 0000001
> HostMax:   10.1.1.126            00001010.00000001.00000001.0 1111110
> Hosts/Net: 126                   (Private Internet)
> Observation :
> ======================
> The broadcast IP of the guest CIDR gets reserved as well
> <listnetworksresponse cloud-stack-version="4.2.0-SNAPSHOT"><count>1</count><network><id>d34f885d-9f19-4d0e-92eb-95f0d33bcaea</id><name>N-2</name><displaytext>n2</displaytext><broadcastdomaintype>Vlan</broadcastdomaintype><traffictype>Guest</traffictype><gateway>10.1.1.1</gateway><netmask>255.255.255.0</netmask><cidr>10.1.1.0/25</cidr><networkcidr>10.1.1.0/24</networkcidr><reservediprange>10.1.1.127-10.1.1.254</reservediprange><zoneid>499a59a4-e42f-422b-99ec-0fb682e8b2d1</zoneid><zonename>Zone-1</zonename><networkofferingid>3f320aaa-5128-49a7-8a70-8cd975d6fe17</networkofferingid><networkofferingname>DefaultIsolatedNetworkOfferingWithSourceNatService</networkofferingname><networkofferingdisplaytext>Offering
for Isolated networks with Source Nat service enabled</networkofferingdisplaytext><networkofferingavailability>Required</networkofferingavailability><issystem>false</issystem><state>Implemented</state>
> Same observation is made when the guest CIDR is 10.1.1.0/26 , 10.1.1.0/27 , 10.1.1.0/28
etc
> Address:   10.1.1.0              00001010.00000001.00000001.00 000000
> Netmask:   255.255.255.192 = 26  11111111.11111111.11111111.11 000000
> Wildcard:  0.0.0.63              00000000.00000000.00000000.00 111111
> =>
> Network:   10.1.1.0/26           00001010.00000001.00000001.00 000000 (Class A)
> Broadcast: 10.1.1.63             00001010.00000001.00000001.00 111111
> HostMin:   10.1.1.1              00001010.00000001.00000001.00 000001
> HostMax:   10.1.1.62             00001010.00000001.00000001.00 111110
> Hosts/Net: 62                    (Private Internet)
> <listnetworksresponse cloud-stack-version="4.2.0-SNAPSHOT"><count>1</count><network><id>01a2dcaa-f21d-4096-8b24-755e74d67fa5</id><name>N-1</name><displaytext>N-1</displaytext><broadcastdomaintype>Vlan</broadcastdomaintype><traffictype>Guest</traffictype><gateway>10.1.1.1</gateway><netmask>255.255.255.0</netmask><cidr>10.1.1.0/26</cidr><networkcidr>10.1.1.0/24</networkcidr><reservediprange>10.1.1.63-10.1.1.254</reservediprange><zoneid>499a59a4-e42f-422b-99ec-0fb682e8b2d1</zoneid><zonename>Zone-1</zonename><networkofferingid>3f320aaa-5128-49a7-8a70-8cd975d6fe17</networkofferingid>

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