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2026-03-21 06:11:27 -07:00 · 2026-03-17 16:53:22 -07:00
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--- a/.agents/skills/cloudflare-deploy/references/network-interconnect/README.md
+++ b/.agents/skills/cloudflare-deploy/references/network-interconnect/README.md
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+# Cloudflare Network Interconnect (CNI)
+
+Private, high-performance connectivity to Cloudflare's network. **Enterprise-only**.
+
+## Connection Types
+
+**Direct**: Physical fiber in shared datacenter. 10/100 Gbps. You order cross-connect.
+
+**Partner**: Virtual via Console Connect, Equinix, Megaport, etc. Managed via partner SDN.
+
+**Cloud**: AWS Direct Connect or GCP Cloud Interconnect. Magic WAN only.
+
+## Dataplane Versions
+
+**v1 (Classic)**: GRE tunnel support, VLAN/BFD/LACP, asymmetric MTU (1500↓/1476↑), peering support.
+
+**v2 (Beta)**: No GRE, 1500 MTU both ways, no VLAN/BFD/LACP yet, ECMP instead.
+
+## Use Cases
+
+- **Magic Transit DSR**: DDoS protection, egress via ISP (v1/v2)
+- **Magic Transit + Egress**: DDoS + egress via CF (v1/v2)
+- **Magic WAN + Zero Trust**: Private backbone (v1 needs GRE, v2 native)
+- **Peering**: Public routes at PoP (v1 only)
+- **App Security**: WAF/Cache/LB (v1/v2 over Magic Transit)
+
+## Prerequisites
+
+- Enterprise plan
+- IPv4 /24+ or IPv6 /48+ prefixes
+- BGP ASN for v1
+- See [locations PDF](https://developers.cloudflare.com/network-interconnect/static/cni-locations-2026-01.pdf)
+
+## Specs
+
+- /31 point-to-point subnets
+- 10km max optical distance
+- 10G: 10GBASE-LR single-mode
+- 100G: 100GBASE-LR4 single-mode
+- **No SLA** (free service)
+- Backup Internet required
+
+## Throughput
+
+| Direction | 10G | 100G |
+|-----------|-----|------|
+| CF → Customer | 10 Gbps | 100 Gbps |
+| Customer → CF (peering) | 10 Gbps | 100 Gbps |
+| Customer → CF (Magic) | 1 Gbps/tunnel or CNI | 1 Gbps/tunnel or CNI |
+
+## Timeline
+
+2-4 weeks typical. Steps: request → config review → order connection → configure → test → enable health checks → activate → monitor.
+
+## In This Reference
+- [configuration.md](./configuration.md) - BGP, routing, setup
+- [api.md](./api.md) - API endpoints, SDKs
+- [patterns.md](./patterns.md) - HA, hybrid cloud, failover
+- [gotchas.md](./gotchas.md) - Troubleshooting, limits
+
+## Reading Order by Task
+
+| Task | Files to Load |
+|------|---------------|
+| Initial setup | README → configuration.md → api.md |
+| Create interconnect via API | api.md → gotchas.md |
+| Design HA architecture | patterns.md → README |
+| Troubleshoot connection | gotchas.md → configuration.md |
+| Cloud integration (AWS/GCP) | configuration.md → patterns.md |
+| Monitor + alerts | configuration.md |
+
+## Automation Boundary
+
+**API-Automatable:**
+- List/create/delete interconnects (Direct, Partner)
+- List available slots
+- Get interconnect status
+- Download LOA PDF
+- Create/update CNI objects (BGP config)
+- Query settings
+
+**Requires Account Team:**
+- Initial request approval
+- AWS Direct Connect setup (send LOA+VLAN to CF)
+- GCP Cloud Interconnect final activation
+- Partner interconnect acceptance (Equinix, Megaport)
+- VLAN assignment (v1)
+- Configuration document generation (v1)
+- Escalations + troubleshooting support
+
+**Cannot Be Automated:**
+- Physical cross-connect installation (Direct)
+- Partner portal operations (virtual circuit ordering)
+- AWS/GCP portal operations
+- Maintenance window coordination
+
+## See Also
+- [tunnel](../tunnel/) - Alternative for private network connectivity
+- [spectrum](../spectrum/) - Layer 4 proxy for TCP/UDP traffic
--- a/.agents/skills/cloudflare-deploy/references/network-interconnect/api.md
+++ b/.agents/skills/cloudflare-deploy/references/network-interconnect/api.md
@@ -0,0 +1,199 @@
+# CNI API Reference
+
+See [README.md](README.md) for overview.
+
+## Base
+
+```
+https://api.cloudflare.com/client/v4
+Auth: Authorization: Bearer <token>
+```
+
+## SDK Namespaces
+
+**Primary (recommended):**
+```typescript
+client.networkInterconnects.interconnects.*
+client.networkInterconnects.cnis.*
+client.networkInterconnects.slots.*
+```
+
+**Alternate (deprecated):**
+```typescript
+client.magicTransit.cfInterconnects.*
+```
+
+Use `networkInterconnects` namespace for all new code.
+
+## Interconnects
+
+```http
+GET    /accounts/{account_id}/cni/interconnects              # Query: page, per_page
+POST   /accounts/{account_id}/cni/interconnects              # Query: validate_only=true (optional)
+GET    /accounts/{account_id}/cni/interconnects/{icon}
+GET    /accounts/{account_id}/cni/interconnects/{icon}/status
+GET    /accounts/{account_id}/cni/interconnects/{icon}/loa   # Returns PDF
+DELETE /accounts/{account_id}/cni/interconnects/{icon}
+```
+
+**Create Body:** `account`, `slot_id`, `type`, `facility`, `speed`, `name`, `description`  
+**Status Values:** `active` | `healthy` | `unhealthy` | `pending` | `down`
+
+**Response Example:**
+```json
+{"result": [{"id": "icon_abc", "name": "prod", "type": "direct", "facility": "EWR1", "speed": "10G", "status": "active"}]}
+```
+
+## CNI Objects (BGP config)
+
+```http
+GET    /accounts/{account_id}/cni/cnis
+POST   /accounts/{account_id}/cni/cnis
+GET    /accounts/{account_id}/cni/cnis/{cni}
+PUT    /accounts/{account_id}/cni/cnis/{cni}
+DELETE /accounts/{account_id}/cni/cnis/{cni}
+```
+
+Body: `account`, `cust_ip`, `cf_ip`, `bgp_asn`, `bgp_password`, `vlan`
+
+## Slots
+
+```http
+GET /accounts/{account_id}/cni/slots
+GET /accounts/{account_id}/cni/slots/{slot}
+```
+
+Query: `facility`, `occupied`, `speed`
+
+## Health Checks
+
+Configure via Magic Transit/WAN tunnel endpoints (CNI v2).
+
+```typescript
+await client.magicTransit.tunnels.update(accountId, tunnelId, {
+  health_check: { enabled: true, target: '192.0.2.1', rate: 'high', type: 'request' },
+});
+```
+
+Rates: `high` | `medium` | `low`. Types: `request` | `reply`. See [Magic Transit docs](https://developers.cloudflare.com/magic-transit/how-to/configure-tunnel-endpoints/#add-tunnels).
+
+## Settings
+
+```http
+GET /accounts/{account_id}/cni/settings
+PUT /accounts/{account_id}/cni/settings
+```
+
+Body: `default_asn`
+
+## TypeScript SDK
+
+```typescript
+import Cloudflare from 'cloudflare';
+
+const client = new Cloudflare({ apiToken: process.env.CF_TOKEN });
+
+// List
+await client.networkInterconnects.interconnects.list({ account_id: id });
+
+// Create with validation
+await client.networkInterconnects.interconnects.create({
+  account_id: id,
+  account: id,
+  slot_id: 'slot_abc',
+  type: 'direct',
+  facility: 'EWR1',
+  speed: '10G',
+  name: 'prod-interconnect',
+}, {
+  query: { validate_only: true }, // Dry-run validation
+});
+
+// Create without validation
+await client.networkInterconnects.interconnects.create({
+  account_id: id,
+  account: id,
+  slot_id: 'slot_abc',
+  type: 'direct',
+  facility: 'EWR1',
+  speed: '10G',
+  name: 'prod-interconnect',
+});
+
+// Status
+await client.networkInterconnects.interconnects.get(accountId, iconId);
+
+// LOA (use fetch)
+const res = await fetch(`https://api.cloudflare.com/client/v4/accounts/${id}/cni/interconnects/${iconId}/loa`, {
+  headers: { Authorization: `Bearer ${token}` },
+});
+await fs.writeFile('loa.pdf', Buffer.from(await res.arrayBuffer()));
+
+// CNI object
+await client.networkInterconnects.cnis.create({
+  account_id: id,
+  account: id,
+  cust_ip: '192.0.2.1/31',
+  cf_ip: '192.0.2.0/31',
+  bgp_asn: 65000,
+  vlan: 100,
+});
+
+// Slots (filter by facility and speed)
+await client.networkInterconnects.slots.list({
+  account_id: id,
+  occupied: false,
+  facility: 'EWR1',
+  speed: '10G',
+});
+```
+
+## Python SDK
+
+```python
+from cloudflare import Cloudflare
+
+client = Cloudflare(api_token=os.environ["CF_TOKEN"])
+
+# List, create, status (same pattern as TypeScript)
+client.network_interconnects.interconnects.list(account_id=id)
+client.network_interconnects.interconnects.create(account_id=id, account=id, slot_id="slot_abc", type="direct", facility="EWR1", speed="10G")
+client.network_interconnects.interconnects.get(account_id=id, icon=icon_id)
+
+# CNI objects and slots
+client.network_interconnects.cnis.create(account_id=id, cust_ip="192.0.2.1/31", cf_ip="192.0.2.0/31", bgp_asn=65000)
+client.network_interconnects.slots.list(account_id=id, occupied=False)
+```
+
+## cURL
+
+```bash
+# List interconnects
+curl "https://api.cloudflare.com/client/v4/accounts/${ACCOUNT_ID}/cni/interconnects" \
+  -H "Authorization: Bearer ${CF_TOKEN}"
+
+# Create interconnect
+curl -X POST "https://api.cloudflare.com/client/v4/accounts/${ACCOUNT_ID}/cni/interconnects?validate_only=true" \
+  -H "Authorization: Bearer ${CF_TOKEN}" -H "Content-Type: application/json" \
+  -d '{"account": "id", "slot_id": "slot_abc", "type": "direct", "facility": "EWR1", "speed": "10G"}'
+
+# LOA PDF
+curl "https://api.cloudflare.com/client/v4/accounts/${ACCOUNT_ID}/cni/interconnects/${ICON_ID}/loa" \
+  -H "Authorization: Bearer ${CF_TOKEN}" --output loa.pdf
+```
+
+## Not Available via API
+
+**Missing Capabilities:**
+- BGP session state query (use Dashboard or BGP logs)
+- Bandwidth utilization metrics (use external monitoring)
+- Traffic statistics per interconnect
+- Historical uptime/downtime data
+- Light level readings (contact account team)
+- Maintenance window scheduling (notifications only)
+
+## Resources
+
+- [API Docs](https://developers.cloudflare.com/api/resources/network_interconnects/)
+- [TypeScript SDK](https://github.com/cloudflare/cloudflare-typescript)
+- [Python SDK](https://github.com/cloudflare/cloudflare-python)
--- a/.agents/skills/cloudflare-deploy/references/network-interconnect/configuration.md
+++ b/.agents/skills/cloudflare-deploy/references/network-interconnect/configuration.md
@@ -0,0 +1,114 @@
+# CNI Configuration
+
+See [README.md](README.md) for overview.
+
+## Workflow (2-4 weeks)
+
+1. **Submit request** (Week 1): Contact account team, provide type/location/use case
+2. **Review config** (Week 1-2, v1 only): Approve IP/VLAN/spec doc
+3. **Order connection** (Week 2-3):
+   - **Direct**: Get LOA, order cross-connect from facility
+   - **Partner**: Order virtual circuit in partner portal
+   - **Cloud**: Order Direct Connect/Cloud Interconnect, send LOA+VLAN to CF
+4. **Configure** (Week 3): Both sides configure per doc
+5. **Test** (Week 3-4): Ping, verify BGP, check routes
+6. **Health checks** (Week 4): Configure [Magic Transit](https://developers.cloudflare.com/magic-transit/how-to/configure-tunnel-endpoints/#add-tunnels) or [Magic WAN](https://developers.cloudflare.com/magic-wan/configuration/manually/how-to/configure-tunnel-endpoints/#add-tunnels) health checks
+7. **Activate** (Week 4): Route traffic, verify flow
+8. **Monitor**: Enable [maintenance notifications](https://developers.cloudflare.com/network-interconnect/monitoring-and-alerts/#enable-cloudflare-status-maintenance-notification)
+
+## BGP Configuration
+
+**v1 Requirements:**
+- BGP ASN (provide during setup)
+- /31 subnet for peering
+- Optional: BGP password
+
+**v2:** Simplified, less BGP config needed.
+
+**BGP over CNI (Dec 2024):** Magic WAN/Transit can now peer BGP directly over CNI v2 (no GRE tunnel required).
+
+**Example v1 BGP:**
+```
+Router ID: 192.0.2.1
+Peer IP: 192.0.2.0
+Remote ASN: 13335
+Local ASN: 65000
+Password: [optional]
+VLAN: 100
+```
+
+## Cloud Interconnect Setup
+
+### AWS Direct Connect (Beta)
+
+**Requirements:** Magic WAN, AWS Dedicated Direct Connect 1/10 Gbps.
+
+**Process:**
+1. Contact CF account team
+2. Choose location
+3. Order in AWS portal
+4. AWS provides LOA + VLAN ID
+5. Send to CF account team
+6. Wait ~4 weeks
+
+**Post-setup:** Add [static routes](https://developers.cloudflare.com/magic-wan/configuration/manually/how-to/configure-routes/#configure-static-routes) to Magic WAN. Enable [bidirectional health checks](https://developers.cloudflare.com/magic-wan/configuration/manually/how-to/configure-tunnel-endpoints/#legacy-bidirectional-health-checks).
+
+### GCP Cloud Interconnect (Beta)
+
+**Setup via Dashboard:**
+1. Interconnects → Create → Cloud Interconnect → Google
+2. Provide name, MTU (match GCP VLAN attachment), speed (50M-50G granular options available for partner interconnects)
+3. Enter VLAN attachment pairing key
+4. Confirm order
+
+**Routing to GCP:** Add [static routes](https://developers.cloudflare.com/magic-wan/configuration/manually/how-to/configure-routes/#configure-static-routes). BGP routes from GCP Cloud Router **ignored**.
+
+**Routing to CF:** Configure [custom learned routes](https://cloud.google.com/network-connectivity/docs/router/how-to/configure-custom-learned-routes) in Cloud Router. Request prefixes from CF account team.
+
+## Monitoring
+
+**Dashboard Status:**
+
+| Status | Meaning |
+|--------|---------|
+| **Healthy** | Link operational, traffic flowing, health checks passing |
+| **Active** | Link up, sufficient light, Ethernet negotiated |
+| **Unhealthy** | Link down, no/low light (<-20 dBm), can't negotiate |
+| **Pending** | Cross-connect incomplete, device unresponsive, RX/TX swapped |
+| **Down** | Physical link down, no connectivity |
+
+**Alerts:**
+
+**CNI Connection Maintenance** (Magic Networking only):
+```
+Dashboard → Notifications → Add
+Product: Cloudflare Network Interconnect
+Type: Connection Maintenance Alert
+```
+Warnings up to 2 weeks advance. 6hr delay for new additions.
+
+**Cloudflare Status Maintenance** (entire PoP):
+```
+Dashboard → Notifications → Add
+Product: Cloudflare Status
+Filter PoPs: gru,fra,lhr
+```
+
+**Find PoP code:**
+```
+Dashboard → Magic Transit/WAN → Configuration → Interconnects
+Select CNI → Note Data Center (e.g., "gru-b")
+Use first 3 letters: "gru"
+```
+
+## Best Practices
+
+**Critical config-specific practices:**
+- /31 subnets required for BGP
+- BGP passwords recommended
+- BFD for fast failover (v1 only)
+- Test ping connectivity before BGP
+- Enable maintenance notifications immediately after activation
+- Monitor status programmatically via API
+
+For design patterns, HA architecture, and security best practices, see [patterns.md](./patterns.md).
--- a/.agents/skills/cloudflare-deploy/references/network-interconnect/gotchas.md
+++ b/.agents/skills/cloudflare-deploy/references/network-interconnect/gotchas.md
@@ -0,0 +1,165 @@
+# CNI Gotchas & Troubleshooting
+
+## Common Errors
+
+### "Status: Pending"
+
+**Cause:** Cross-connect not installed, RX/TX fibers reversed, wrong fiber type, or low light levels
+**Solution:**
+1. Verify cross-connect installed
+2. Check fiber at patch panel
+3. Swap RX/TX fibers
+4. Check light with optical power meter (target > -20 dBm)
+5. Contact account team
+
+### "Status: Unhealthy"
+
+**Cause:** Physical issue, low light (<-20 dBm), optic mismatch, or dirty connectors
+**Solution:**
+1. Check physical connections
+2. Clean fiber connectors
+3. Verify optic types (10GBASE-LR/100GBASE-LR4)
+4. Test with known-good optics
+5. Check patch panel
+6. Contact account team
+
+### "BGP Session Down"
+
+**Cause:** Wrong IP addressing, wrong ASN, password mismatch, or firewall blocking TCP/179
+**Solution:**
+1. Verify IPs match CNI object
+2. Confirm ASN correct
+3. Check BGP password
+4. Verify no firewall on TCP/179
+5. Check BGP logs
+6. Review BGP timers
+
+### "Low Throughput"
+
+**Cause:** MTU mismatch, fragmentation, single GRE tunnel (v1), or routing inefficiency
+**Solution:**
+1. Check MTU (1500↓/1476↑ for v1, 1500 both for v2)
+2. Test various packet sizes
+3. Add more GRE tunnels (v1)
+4. Consider upgrading to v2
+5. Review routing tables
+6. Use LACP for bundling (v1)
+
+## API Errors
+
+### 400 Bad Request: "slot_id already occupied"
+
+**Cause:** Another interconnect already uses this slot  
+**Solution:** Use `occupied=false` filter when listing slots:
+```typescript
+await client.networkInterconnects.slots.list({
+  account_id: id,
+  occupied: false,
+  facility: 'EWR1',
+});
+```
+
+### 400 Bad Request: "invalid facility code"
+
+**Cause:** Typo or unsupported facility  
+**Solution:** Check [locations PDF](https://developers.cloudflare.com/network-interconnect/static/cni-locations-2026-01.pdf) for valid codes
+
+### 403 Forbidden: "Enterprise plan required"
+
+**Cause:** Account not enterprise-level  
+**Solution:** Contact account team to upgrade
+
+### 422 Unprocessable: "validate_only request failed"
+
+**Cause:** Dry-run validation found issues (wrong slot, invalid config)  
+**Solution:** Review error message details, fix config before real creation
+
+### Rate Limiting
+
+**Limit:** 1200 requests/5min per token  
+**Solution:** Implement exponential backoff, cache slot listings
+
+## Cloud-Specific Issues
+
+### AWS Direct Connect: "VLAN not matching"
+
+**Cause:** VLAN ID from AWS LOA doesn't match CNI config  
+**Solution:**
+1. Get VLAN from AWS Console after ordering
+2. Send exact VLAN to CF account team
+3. Verify match in CNI object config
+
+### AWS: "Connection stuck in Pending"
+
+**Cause:** LOA not provided to CF or AWS connection not accepted  
+**Solution:**
+1. Verify AWS connection status is "Available"
+2. Confirm LOA sent to CF account team
+3. Wait for CF team acceptance (can take days)
+
+### GCP: "BGP routes not propagating"
+
+**Cause:** BGP routes from GCP Cloud Router **ignored by design**  
+**Solution:** Use [static routes](https://developers.cloudflare.com/magic-wan/configuration/manually/how-to/configure-routes/#configure-static-routes) in Magic WAN instead
+
+### GCP: "Cannot query VLAN attachment status via API"
+
+**Cause:** GCP Cloud Interconnect Dashboard-only (no API yet)  
+**Solution:** Check status in CF Dashboard or GCP Console
+
+## Partner Interconnect Issues
+
+### Equinix: "Virtual circuit not appearing"
+
+**Cause:** CF hasn't accepted Equinix connection request  
+**Solution:**
+1. Verify VC created in Equinix Fabric Portal
+2. Contact CF account team to accept
+3. Allow 2-3 business days
+
+### Console Connect/Megaport: "API creation fails"
+
+**Cause:** Partner interconnects require partner portal + CF approval  
+**Solution:** Cannot fully automate. Order in partner portal, notify CF account team.
+
+## Anti-Patterns
+
+| Anti-Pattern | Why Bad | Solution |
+|--------------|---------|----------|
+| Single interconnect for production | No SLA, single point of failure | Use ≥2 with device diversity |
+| No backup Internet | CNI fails = total outage | Always maintain alternate path |
+| Polling status every second | Rate limits, wastes API calls | Poll every 30-60s max |
+| Using v1 for Magic WAN v2 workloads | GRE overhead, complexity | Use v2 for simplified routing |
+| Assuming BGP session = traffic flowing | BGP up ≠ routes installed | Verify routing tables + test traffic |
+| Not enabling maintenance alerts | Surprise downtime during maintenance | Enable notifications immediately |
+| Hardcoding VLAN in automation | VLAN assigned by CF (v1) | Get VLAN from CNI object response |
+| Using Direct without colocation | Can't access cross-connect | Use Partner or Cloud interconnect |
+
+## What's Not Queryable via API
+
+**Cannot retrieve:**
+- BGP session state (use Dashboard or BGP logs)
+- Light levels (contact account team)
+- Historical metrics (uptime, traffic)
+- Bandwidth utilization per interconnect
+- Maintenance window schedules (notifications only)
+- Fiber path details
+- Cross-connect installation status
+
+**Workarounds:**
+- External monitoring for BGP state
+- Log aggregation for historical data
+- Notifications for maintenance windows
+
+## Limits
+
+| Resource/Limit | Value | Notes |
+|----------------|-------|-------|
+| Max optical distance | 10km | Physical limit |
+| MTU (v1) | 1500↓ / 1476↑ | Asymmetric |
+| MTU (v2) | 1500 both | Symmetric |
+| GRE tunnel throughput | 1 Gbps | Per tunnel (v1) |
+| Recovery time | Days | No formal SLA |
+| Light level minimum | -20 dBm | Target threshold |
+| API rate limit | 1200 req/5min | Per token |
+| Health check delay | 6 hours | New maintenance alert subscriptions |
--- a/.agents/skills/cloudflare-deploy/references/network-interconnect/patterns.md
+++ b/.agents/skills/cloudflare-deploy/references/network-interconnect/patterns.md
@@ -0,0 +1,166 @@
+# CNI Patterns
+
+See [README.md](README.md) for overview.
+
+## High Availability
+
+**Critical:** Design for resilience from day one.
+
+**Requirements:**
+- Device-level diversity (separate hardware)
+- Backup Internet connectivity (no SLA on CNI)
+- Network-resilient locations preferred
+- Regular failover testing
+
+**Architecture:**
+```
+Your Network A ──10G CNI v2──> CF CCR Device 1
+                                     │
+Your Network B ──10G CNI v2──> CF CCR Device 2
+                                     │
+                            CF Global Network (AS13335)
+```
+
+**Capacity Planning:**
+- Plan across all links
+- Account for failover scenarios
+- Your responsibility
+
+## Pattern: Magic Transit + CNI v2
+
+**Use Case:** DDoS protection, private connectivity, no GRE overhead.
+
+```typescript
+// 1. Create interconnect
+const ic = await client.networkInterconnects.interconnects.create({
+  account_id: id,
+  type: 'direct',
+  facility: 'EWR1',
+  speed: '10G',
+  name: 'magic-transit-primary',
+});
+
+// 2. Poll until active
+const status = await pollUntilActive(id, ic.id);
+
+// 3. Configure Magic Transit tunnel via Dashboard/API
+```
+
+**Benefits:** 1500 MTU both ways, simplified routing.
+
+## Pattern: Multi-Cloud Hybrid
+
+**Use Case:** AWS/GCP workloads with Cloudflare.
+
+**AWS Direct Connect:**
+```typescript
+// 1. Order Direct Connect in AWS Console
+// 2. Get LOA + VLAN from AWS
+// 3. Send to CF account team (no API)
+// 4. Configure static routes in Magic WAN
+
+await configureStaticRoutes(id, {
+  prefix: '10.0.0.0/8',
+  nexthop: 'aws-direct-connect',
+});
+```
+
+**GCP Cloud Interconnect:**
+```
+1. Get VLAN attachment pairing key from GCP Console
+2. Create via Dashboard: Interconnects → Create → Cloud Interconnect → Google
+   - Enter pairing key, name, MTU, speed
+3. Configure static routes in Magic WAN (BGP routes from GCP ignored)
+4. Configure custom learned routes in GCP Cloud Router
+```
+
+**Note:** Dashboard-only. No API/SDK support yet.
+
+## Pattern: Multi-Location HA
+
+**Use Case:** 99.99%+ uptime.
+
+```typescript
+// Primary (NY)
+const primary = await client.networkInterconnects.interconnects.create({
+  account_id: id,
+  type: 'direct',
+  facility: 'EWR1',
+  speed: '10G',
+  name: 'primary-ewr1',
+});
+
+// Secondary (NY, different hardware)
+const secondary = await client.networkInterconnects.interconnects.create({
+  account_id: id,
+  type: 'direct',
+  facility: 'EWR2',
+  speed: '10G',
+  name: 'secondary-ewr2',
+});
+
+// Tertiary (LA, different geography)
+const tertiary = await client.networkInterconnects.interconnects.create({
+  account_id: id,
+  type: 'partner',
+  facility: 'LAX1',
+  speed: '10G',
+  name: 'tertiary-lax1',
+});
+
+// BGP local preferences:
+// Primary: 200
+// Secondary: 150
+// Tertiary: 100
+// Internet: Last resort
+```
+
+## Pattern: Partner Interconnect (Equinix)
+
+**Use Case:** Quick deployment, no colocation.
+
+**Setup:**
+1. Order virtual circuit in Equinix Fabric Portal
+2. Select Cloudflare as destination
+3. Choose facility
+4. Send details to CF account team
+5. CF accepts in portal
+6. Configure BGP
+
+**No API automation** – partner portals managed separately.
+
+## Failover & Security
+
+**Failover Best Practices:**
+- Use BGP local preferences for priority
+- Configure BFD for fast detection (v1)
+- Test regularly with traffic shift
+- Document runbooks
+
+**Security:**
+- BGP password authentication
+- BGP route filtering
+- Monitor unexpected routes
+- Magic Firewall for DDoS/threats
+- Minimum API token permissions
+- Rotate credentials periodically
+
+## Decision Matrix
+
+| Requirement | Recommended |
+|-------------|-------------|
+| Collocated with CF | Direct |
+| Not collocated | Partner |
+| AWS/GCP workloads | Cloud |
+| 1500 MTU both ways | v2 |
+| VLAN tagging | v1 |
+| Public peering | v1 |
+| Simplest config | v2 |
+| BFD fast failover | v1 |
+| LACP bundling | v1 |
+
+## Resources
+
+- [Magic Transit Docs](https://developers.cloudflare.com/magic-transit/)
+- [Magic WAN Docs](https://developers.cloudflare.com/magic-wan/)
+- [Argo Smart Routing](https://developers.cloudflare.com/argo/)