# admin network configuration

**URL:** <https://forums.suse.com/t/admin-network-configuration/30606>\
**Category:** SUSE OpenStack Cloud\
**Created:** [November 29, 2017, 9:33am UTC](https://forums.suse.com/t/admin-network-configuration/30606 "2017-11-29T09:33:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sboddula](https://avatars.discourse-cdn.com/v4/letter/s/c89c15/32.png) [@sboddula](https://forums.suse.com/u/sboddula)\
**Post date:** [November 29, 2017, 9:33am UTC](https://forums.suse.com/t/admin-network-configuration/30606/1 "2017-11-29T09:33:06Z")

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Hi,

Can someone please clarify my doubts regarding creating network.json file. Thank you in advance.

1. I will be adding my existing SLES severs to the cloud, this is the only way i will be provisioning servers, and i won’t be using PXE/DHCP method of provisioning. In that case, how the admin network should be defined in the network.json file?

2. I do not understand the various IP range sections under admin network. The ranges like admin, dhcp, host, and switch, what are these exactly for?

“ranges”: {  
“admin”: {  
“end”: “192.168.124.11”,  
“start”: “192.168.124.10”  
},  
“dhcp”: {  
“end”: “192.168.124.80”,  
“start”: “192.168.124.21”  
},  
“host”: {  
“end”: “192.168.124.160”,  
“start”: “192.168.124.81”  
},  
“switch”: {  
“end”: “192.168.124.250”,  
“start”: “192.168.124.241”  
}  
},

1. If my admin, BMC, nova-external floating, and public network falls in the same network/VLAN (untagged), then do i still need to define the networks like “bmc”, “bmc\_vlan”, “public” in the network.json ?

Thanks & Regards,  
Shashi Kanth.

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<div class="post-metadata">

**Author:** ![smflood](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/smflood/32/10576_2.png) [@smflood](https://forums.suse.com/u/smflood)\
**Post date:** [November 29, 2017, 2:02pm UTC](https://forums.suse.com/t/admin-network-configuration/30606/2 "2017-11-29T14:02:20Z")

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On 29/11/17 07:34, sboddula wrote:  
[color=blue]

> Can someone please clarify my doubts regarding creating network.json  
> file. Thank you in advance.
> 
> 1. I will be adding my existing SLES severs to the cloud, this is the  
> only way i will be provisioning servers, and i won’t be using PXE/DHCP  
> method of provisioning. In that case, how the admin network should be  
> defined in the network.json file?[/color]

What do you mean by “existing SLES servers”? Are these currently  
physical or virtual (not in OpenStack) servers running SUSE Linux  
Enterprise Server (SLES) or do you mean you already have some existing  
SUSE OpenStack Cloud nodes?  
[color=blue]

> 1. I do not understand the various IP range sections under admin  
> network. The ranges like admin, dhcp, host, and switch, what are these  
> exactly for?
> 
> “ranges”: {  
> “admin”: {  
> “end”: “192.168.124.11”,  
> “start”: “192.168.124.10”  
> },  
> “dhcp”: {  
> “end”: “192.168.124.80”,  
> “start”: “192.168.124.21”  
> },  
> “host”: {  
> “end”: “192.168.124.160”,  
> “start”: “192.168.124.81”  
> },  
> “switch”: {  
> “end”: “192.168.124.250”,  
> “start”: “192.168.124.241”  
> }  
> },[/color]

See tables 2-2 in section 2.1.1 of the SUSE OpenStack Cloud 7 Deployment  
Guide at  
[https://www.suse.com/documentation/suse-openstack-cloud-7/book\_cloud\_deploy/data/sec\_depl\_req\_network.html](https://www.suse.com/documentation/suse-openstack-cloud-7/book_cloud_deploy/data/sec_depl_req_network.html)  
[color=blue]

> 1. If my admin, BMC, nova-external floating, and public network falls  
> in the same network/VLAN (untagged), then do i still need to define the  
> networks like “bmc”, “bmc\_vlan”, “public” in the network.json ?[/color]

Yes you’ll still need them but you adjust values accordingly as per  
[https://www.suse.com/documentation/suse-openstack-cloud-7/book\_cloud\_deploy/data/sec\_depl\_inst\_admserv\_post\_network.html](https://www.suse.com/documentation/suse-openstack-cloud-7/book_cloud_deploy/data/sec_depl_inst_admserv_post_network.html)

## HTH.

Simon  
SUSE Knowledge Partner

* * *

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<div class="post-metadata">

**Author:** ![sboddula](https://avatars.discourse-cdn.com/v4/letter/s/c89c15/32.png) [@sboddula](https://forums.suse.com/u/sboddula)\
**Post date:** [November 29, 2017, 3:51pm UTC](https://forums.suse.com/t/admin-network-configuration/30606/3 "2017-11-29T15:51:30Z")

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Hello Simon,

I would like to add SLES Physical Servers to the SUSE Cloud by running crowbar\_register method. I will be using only this method of provisioning OpenStack nodes. In this case, i would like to understand how i need to define admin network in the json file. The admin IP ranges like host, dhcp, and switch won’t be use full at all to me, so i have a doubt whether i need to define them or not.

And, i won’t be using BMC network at all, in this case i would like to understand whether still i need to define bmc and bmc\_vlan networks in json file.

Thanks & Regards,  
Shashi Kanth.