IP Address Management (IPAM)
IP Address Management (IPAM) is responsible for the allocation and management of IP addresses used by network endpoints (container and others) managed by Cilium. Various IPAM modes are supported to meet the needs of different users:
Feature |
Kubernetes Host Scope |
Cluster Scope (default) |
Cluster Scope v2 |
CRD-backed |
AWS ENI |
Azure IPAM |
GKE |
|---|---|---|---|---|---|---|---|
Tunnel routing |
✅ |
✅ |
❌ |
❌ |
❌ |
❌ |
❌ |
Direct routing |
✅ |
✅ |
✅ |
✅ |
✅ |
✅ |
✅ |
CIDR Configuration |
Kubernetes |
Cilium |
Cilium |
External |
External (AWS) |
External (Azure) |
External (GCP) |
Multiple CIDRs per cluster |
❌ |
✅ |
✅ |
N/A |
N/A |
N/A |
N/A |
Multiple CIDRs per node |
❌ |
❌ |
✅ |
N/A |
N/A |
N/A |
N/A |
Dynamic CIDR/IP allocation |
❌ |
❌ |
✅ |
✅ |
✅ |
✅ |
❌ |