network/management_subnet_analysis.md

Management Subnet Overlap Analysis

Summary of Management Subnets by Site

1. Climax (10.254.254.102)

• Management Subnet: 10.10.31.254/20
• Network: 10.10.16.0/20
• IP Range: 10.10.16.0 - 10.10.31.255
• Interface: mgmt

2. Culleoka (10.254.254.104)

• Management Subnet: 10.10.111.254/20
• Network: 10.10.96.0/20
• IP Range: 10.10.96.0 - 10.10.111.255
• Interface: vlan10_ether2

3. 494 Site (10.254.254.111)

• Management Subnet: 10.10.175.254/20
• Network: 10.10.160.0/20
• IP Range: 10.10.160.0 - 10.10.175.255
• Interface: management

4. 982 Site (10.254.254.110)

• Management Subnet: 10.10.63.254/20
• Network: 10.10.48.0/20
• IP Range: 10.10.48.0 - 10.10.63.255
• Interface: mgmt

5. New Hope (10.254.254.108)

• Management Subnet: 10.10.143.254/20
• Network: 10.10.128.0/20
• IP Range: 10.10.128.0 - 10.10.143.255
• Interface: bridge_cpe_mgmt

6. Lowry Crossing (10.254.254.109)

• Management Subnet: 10.10.159.254/20
• Network: 10.10.144.0/20
• IP Range: 10.10.144.0 - 10.10.159.255
• Interface: management

7. 380 Core (10.254.254.253)

• Management Subnet: 10.10.79.254/20
• Network: 10.10.64.0/20
• IP Range: 10.10.64.0 - 10.10.79.255
• Interface: vlan10_combo1

8. 380 Edge (10.254.254.254)

• No management subnet in the 10.10.x.x range

Overlap Analysis

✅ NO OVERLAPS DETECTED

All sites use different /20 management subnets within the 10.10.0.0/16 range:

1. 10.10.16.0/20 - Climax
2. 10.10.48.0/20 - 982 Site
3. 10.10.64.0/20 - 380 Core
4. 10.10.96.0/20 - Culleoka
5. 10.10.128.0/20 - New Hope
6. 10.10.144.0/20 - Lowry Crossing
7. 10.10.160.0/20 - 494 Site

Key Observations

1. Consistent Subnet Size: All management networks use /20 subnets (4,096 addresses each)
2. Sequential Allocation: The subnets appear to be allocated sequentially within the 10.10.0.0/16 space
3. Common VLAN: Most sites use VLAN 10 for management traffic
4. No Conflicts: Each site has its own unique management subnet with no overlaps

Available Management Subnets

The following /20 subnets within 10.10.0.0/16 are still available for future sites:

• 10.10.0.0/20 (10.10.0.0 - 10.10.15.255)
• 10.10.32.0/20 (10.10.32.0 - 10.10.47.255)
• 10.10.80.0/20 (10.10.80.0 - 10.10.95.255)
• 10.10.112.0/20 (10.10.112.0 - 10.10.127.255)
• 10.10.176.0/20 (10.10.176.0 - 10.10.191.255)
• 10.10.192.0/20 (10.10.192.0 - 10.10.207.255)
• 10.10.208.0/20 (10.10.208.0 - 10.10.223.255)
• 10.10.224.0/20 (10.10.224.0 - 10.10.239.255)
• 10.10.240.0/20 (10.10.240.0 - 10.10.255.255)