GitHub user sjanssen15 closed a discussion: Unable to use ROUTED dynamic
network in ACS 4.20 - IPv4 subnet not applied
**I'm trying to get the follow scenario working (as a proof of concept):**
- Isolated network with ROUTED dynamic network (ACS 4.20 feature)
**I have the following topology:**
KVM hosts with each 4 NICs:
- Guest: VXLAN (5000-6000)
- Public: VLAN
- Storage: VLAN
- Management: VLAN
**What I configured:**
**Setup the Zone with:**
- a IPv4 subnet (10.46.0.0/16)
- Added AS Number range (65060 - 65069)
- Added BGP Peer
**Created a new Network Offering with the following settings:**
- Isolated
- Traffic type Guest
- Persistent: false
- Default egress policy: true
- Availability: Optional
- Specify VLAN: false
- Routing mode: Dynamic
- Specify AS number: false
- Specify IP ranges: false
- Network Mode: ROUTED
- Supported services
Dns : VirtualRouter
Firewall : VirtualRouter
UserData : VirtualRouter
Dhcp : VirtualRouter
**Created a Guest Network with the new offering:**
- CIDR size: 24
- Left the rest empty/default
After creating it, the network is in Allocated state but it doesn't acquire a
IPv4 CIDR (it's empty). Because of this, I'm unable to choose this network when
deploying a virtual machine.
When I try to force a deployment of an instance in this network:
- In the deploy page (UI) it says: CIDR: undefined
- After that the following error:
`Unable to acquire Guest IP address for network Network {"id": 204, "name":
"CBS - Isolated ROUTED Dynamic", "uuid":
"e9899298-f470-4d5b-855c-18bf0ea4c4ad", "networkofferingid": 29}
`
**My question:**
I tried official documentation online and configured all settings. I also had a
look at the video made by Wei Zhou and followed all those steps as well. Am I
missing some crucial setting in order to deploy a network that will be usable
by an instance?
GitHub link: https://github.com/apache/cloudstack/discussions/10855
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