CHAPTER 6: WIRED-TO-WIRELESS MIGRATION FRAMEWORK¶
6.1 Migration Strategy Overview¶
6.1.1 Strategic Vision: "Wireless by Default, Wired by Exception"¶
Abhavtech's Phase 5 Goal: Transition from traditional wired-first network to wireless-first enterprise by Q2 2026.
Current State (Pre-Phase 5): - 15,840 wired access ports across 330 switches - 1,185 wireless APs (primarily WiFi ⅚) - Wired utilization: 48% (7,550 active ports) - Wireless adoption: 30% (primarily BYOD, guests)
Target State (Post-Phase 5B): - 7,350 wired access ports across 152 switches (54% reduction) - 1,220 WiFi 7 APs - Wired utilization: 48% (same utilization, fewer ports needed) - Wireless adoption: 85% (corporate laptops, tablets, IoT devices)
Benefits: - CapEx Savings: 178 access switches decommissioned ($3.2M avoided replacement cost) - OpEx Savings: $420K/year (power, cooling, maintenance) - Agility: Office reconfigurations require no re-cabling (save 3-5 weeks per move) - User Experience: >4 Gbps wireless (vs 1 Gbps wired), seamless roaming
6.1.2 Migration Phases¶
4-Phase Migration Model:
| Phase | Name | Timeline | Scope | Success Criteria |
|---|---|---|---|---|
| Phase 5A | Pilot Validation | Q2 2025 (Week 1-16) | 115 APs, 4 sites, 1,420 users | 3 use cases validated, >90% satisfaction |
| Phase 5B-Wave 1 | Critical Sites | Q3 2025 (Week 17-30) | 400 APs, 6 HQ sites, 5,200 users | Executives + conference rooms wireless |
| Phase 5B-Wave 2 | Regional Expansion | Q4 2025-Q1 2026 (Week 31-52) | 550 APs, 8 regional sites, 6,000 users | General office wireless, 70% adoption |
| Phase 5B-Wave 3 | Branch Rollout | Q2 2026 (Week 53-65) | 155 APs, 5 branch sites, 2,300 users | Complete wireless-first transformation |
| TOTAL | Full Deployment | Q2 2025 - Q2 2026 (65 weeks) | 1,220 APs, 19 sites, 14,920 users | 85% wireless adoption, 54% port reduction |
Phase Progression Logic:
Phase 5A (Pilot) → Validate 3 Use Cases
↓ Exit Criteria: All 3 validated, >90% satisfaction, zero P1 incidents
Phase 5B-Wave 1 (Critical Sites) → Scale to HQ sites
↓ Exit Criteria: 70% wireless adoption, >85% satisfaction
Phase 5B-Wave 2 (Regional) → General office rollout
↓ Exit Criteria: 75% wireless adoption, switch consolidation started
Phase 5B-Wave 3 (Branches) → Complete transformation
↓ Exit Criteria: 85% wireless adoption, 178 switches decommissioned
6.1.3 Migration Principles¶
Guiding Principles:
-
User-Centric Approach: No forced migrations. Users volunteer for wireless-only workspaces. Provide "opt-out" option for users who prefer wired.
-
Zero Disruption: All migrations during maintenance windows or phased over weekends. No unplanned outages.
-
Rollback-Ready: Every migration has documented rollback procedure. Can revert to wired within 30 minutes.
-
Phased Adoption: Start with early adopters (tech-savvy executives), then expand to general population.
-
Communication-First: 3-week advance notice for all users. IT helpdesk staffed on-site during migration weeks.
-
Data-Driven: Continuous monitoring of adoption rates, satisfaction, performance. Pause rollout if metrics degrade.
6.2 Device Categorization Framework¶
6.2.1 Device Classification Matrix¶
Every device in Abhavtech's network classified into 4 categories:
| Category | Migration Strategy | Rationale | Examples |
|---|---|---|---|
| Category A: Wireless-First | Migrate to WiFi 7, disable wired port | High mobility, WiFi 7-capable, non-critical uptime | Executive laptops, tablets, smartphones |
| Category B: Wireless-Optional | Wireless preferred, wired available on request | Moderate mobility, WiFi 7-capable, some reliability requirements | Engineer laptops, conference room devices |
| Category C: Wired-Preferred | Keep wired, wireless backup available | Low mobility, high bandwidth/reliability requirements | Desktop workstations, IP phones, printers |
| Category D: Wired-Only | Always wired, no wireless option | Stationary, mission-critical, regulatory requirements | Servers, network infrastructure, BMS, security cameras (non-AI) |
Category Distribution (Pre-Phase 5):
Total Devices: 15,840 wired ports active
Category A (Wireless-First): 4,200 devices (27%)
• Executive laptops: 210
• Employee laptops: 3,800
• Tablets/smartphones: 190
Category B (Wireless-Optional): 6,000 devices (38%)
• Engineer workstations: 2,200
• Conference room equipment: 800 (AppleTV, Webex)
• Guest devices: 3,000
Category C (Wired-Preferred): 4,450 devices (28%)
• Desktop PCs: 3,200
• IP phones: 800
• Printers/MFPs: 250
• Legacy devices (no WiFi): 200
Category D (Wired-Only): 1,190 devices (7%)
• Servers: 450
• Network infrastructure: 200
• Building automation (BMS, HVAC): 300
• Security cameras (wired PoE): 240
Post-Phase 5B Target:
Category A: 90% migrated to wireless (3,780 devices wireless, 420 wired on-demand)
Category B: 70% migrated to wireless (4,200 wireless, 1,800 wired on-demand)
Category C: 10% migrated to wireless (445 wireless, 4,005 wired)
Category D: 0% migrated (1,190 wired-only)
Total Wired Ports Needed: 420 + 1,800 + 4,005 + 1,190 = 7,415 ports
Actual Wired Ports (with 20% spare): 7,415 × 1.2 = 8,900 ports
Access Switches Needed: 8,900 ÷ 48 = 186 switches (rounded up from 152)
Switches Decommissioned: 330 - 186 = 144 switches
6.2.2 Detailed Device Assessment¶
Category A: Wireless-First (4,200 devices)
| Device Type | Quantity | WiFi 7 Capable? | Migration Priority | Notes |
|---|---|---|---|---|
| Executive Laptops | 210 | 100% (refreshed 2023-2024) | HIGH (Week 11-12) | Dell Latitude 7450, MacBook Pro M4 |
| Employee Laptops (Corporate) | 3,800 | 65% (2,470 WiFi 7, 1,330 WiFi 6) | MEDIUM (Week 17-52) | Prioritize WiFi 7-capable first |
| Tablets | 120 | 90% (108 WiFi 7) | LOW (Week 30-52) | iPad Pro, Surface Pro |
| Smartphones | 70 | 100% (BYOD, latest models) | LOW (already wireless) | iPhone, Samsung Galaxy |
Migration Strategy: - Week 11-12 (Pilot): 80 executive laptops (Mumbai Floor 6) - Week 17-30 (Wave 1): 130 additional executive laptops (Chennai, London) - Week 31-52 (Wave 2): 2,470 WiFi 7-capable employee laptops - Week 53-65 (Wave 3): 1,330 WiFi 6 employee laptops (acceptable performance, 1-2 Gbps)
Category B: Wireless-Optional (6,000 devices)
| Device Type | Quantity | WiFi 7 Capable? | Migration Strategy | Notes |
|---|---|---|---|---|
| Engineering Workstations | 2,200 | 40% (880 WiFi 7) | Wireless preferred, wired on request | Some engineers need wired for VPN stability |
| Conference Room Equipment | 800 | 60% (480 WiFi 7) | Migrate AppleTV/Miracast, keep Webex wired | Dual-mode: wireless presentation + wired backup |
| Guest/Contractor Devices | 3,000 | Variable (assume 50% WiFi 7) | Already wireless (guest SSID) | No migration needed |
Migration Strategy: - Conference Rooms: 480 AppleTV/Miracast devices wireless-only (Week 10-30) - Engineering Workstations: Offer wireless-first option, 60% adoption expected (Week 31-52) - Wired Fallback: Engineers can request wired port if wireless insufficient (VPN, large file transfers)
Category C: Wired-Preferred (4,450 devices)
| Device Type | Quantity | Migration Strategy | Notes |
|---|---|---|---|
| Desktop PCs | 3,200 | Keep 90% wired (2,880), migrate 10% (320) | USB WiFi adapters for hoteling desks |
| IP Phones | 800 | Keep 100% wired (PoE, voice quality) | No migration |
| Printers/MFPs | 250 | Keep 100% wired (reliability) | No migration |
| Legacy Devices | 200 | Keep 100% wired (no WiFi capability) | Replace in FY26 refresh |
Migration Strategy: - Desktop PCs: Migrate only hoteling/shared desks (320 devices) to wireless via USB WiFi 7 adapters - IP Phones, Printers: No migration (PoE, reliability requirements) - Legacy Devices: No migration until hardware refresh
Category D: Wired-Only (1,190 devices)
| Device Type | Quantity | Migration Strategy | Notes |
|---|---|---|---|
| Servers | 450 | Wired-only (10G/25G NICs) | Mission-critical, low latency |
| Network Infrastructure | 200 | Wired-only (switches, routers, firewalls) | Infrastructure backbone |
| Building Automation (BMS) | 300 | Wired-only (24x7 reliability) | HVAC, lighting, elevators |
| Security Cameras (Wired PoE) | 240 | Wired-only (existing deployment) | Only 40 AI cameras go wireless (Phase 5A) |
No Migration: All Category D devices remain wired permanently.
6.3 User Communication & Change Management¶
6.3.1 Communication Timeline¶
3-Week Advance Notice Model:
| Timeline | Communication | Target Audience | Message |
|---|---|---|---|
| T-21 days | Executive briefing (email + town hall) | C-suite, VPs | "WiFi 7 rollout: faster, wireless-first workspace" |
| T-14 days | Department manager briefing | Managers | "Your team's migration schedule, what to expect" |
| T-7 days | User notification (email + Slack) | All affected users | "Your wireless migration: [Date], [Floor], [Support]" |
| T-3 days | Reminder email + helpdesk prep | All affected users | "Migration in 3 days, helpdesk on-site [Hours]" |
| T-0 (Migration Day) | On-site IT support | All affected users | IT team on-site for assistance |
| T+1 day | Follow-up survey | Migrated users | "How was your wireless migration experience?" |
| T+7 days | Performance check-in | Migrated users | "Any issues or concerns? Opt-out option available" |
6.3.2 Sample Communications¶
Email Template 1: Executive Briefing (T-21)
Subject: WiFi 7 Rollout: Faster, Wireless-First Workspace
Dear [Executive Name],
We're excited to announce Abhavtech's WiFi 7 wireless-first transformation,
starting with Mumbai HQ Floor 6 (Executive Floor) in Week 11.
What's Changing:
• Your desk will be 100% wireless (no Ethernet cable needed)
• Faster performance: >4 Gbps WiFi 7 (vs 1 Gbps wired)
• Seamless roaming: Stay connected desk → conference room → café
• Cleaner workspace: No cable clutter
What You Need to Do:
• Ensure your laptop is WiFi 7-capable (IT will confirm)
• Connect to new "Corp-Secure-7" SSID on [Migration Date]
• IT helpdesk on-site 8am-6pm for assistance
Your migration date: [Date], [Floor]
Have questions? Reply to this email or contact IT helpdesk.
Best regards,
[CTO Name]
Abhavtech Technology Team
Email Template 2: User Notification (T-7)
Subject: Your Wireless Migration: [Date], [Floor]
Hi [User Name],
Your wireless migration is scheduled for [Date] on [Floor]. Here's what to expect:
Before Migration:
✓ Backup your files (precaution, no data loss expected)
✓ Ensure laptop fully charged (disconnect Ethernet cable)
✓ Save open work, restart laptop before migration
Migration Day:
1. Disconnect Ethernet cable from desk (8:00 AM)
2. Connect to "Corp-Secure-7" SSID (same password)
3. Verify internet connectivity (visit any website)
4. IT helpdesk on-site 8am-6pm if you need assistance
After Migration:
• Your old Ethernet port will be disabled (wired not available)
• If wireless insufficient, contact IT for "wired on-demand" option
• Survey: Share your feedback (helps us improve rollout)
Need help? IT helpdesk: ext. 5000 or helpdesk@abhavtech.com
Best regards,
Abhavtech IT Team
Slack Announcement Template (T-3)
📡 Wireless Migration Reminder: 3 Days!
Your wireless migration is in 3 DAYS: [Date], [Floor]
✅ What to do:
• Backup files (precaution)
• Charge laptop fully
• Restart laptop before migration
🆘 Need help?
• IT helpdesk on-site 8am-6pm: [Floor], [Room]
• Slack: #it-helpdesk
• Phone: ext. 5000
🎉 Benefits:
• 4× faster than wired (4 Gbps vs 1 Gbps)
• Seamless roaming (desk → meeting room)
• No cable clutter
Questions? Reply in thread 👇
6.3.3 User Training & Support¶
Training Options:
| Format | Duration | Audience | Content |
|---|---|---|---|
| Self-Service Video | 5 min | All users | "How to connect to Corp-Secure-7 SSID" (screen recording) |
| Live Demo (Lunch & Learn) | 30 min | Early adopters | WiFi 7 benefits, troubleshooting tips |
| 1-on-1 IT Support | 10-15 min | Executives, resistant users | Personal onboarding assistance |
Helpdesk Staffing (Migration Week):
Normal Helpdesk: 2 staff, 9am-5pm (8 hours)
Migration Week Helpdesk: 6 staff, 8am-6pm (10 hours)
Staffing Increase:
• 4 additional roaming technicians (floor-by-floor support)
• 2 hotline staff (dedicated to wireless migration calls)
Expected Call Volume:
• Normal: 20 calls/day
• Migration Week: 80-100 calls/day (4-5× increase)
• Resolution Time: 10 min avg (most issues: wrong SSID, wrong password)
6.4 Migration Procedures¶
6.4.1 Standard Migration Workflow¶
Step-by-Step Procedure (Per User):
Pre-Migration (T-1 day):
1. Verify user device WiFi 7-capable (DNAC inventory check)
2. Pre-stage user account in ISE (ensure 802.1X certificate valid)
3. Send reminder email (T-1 day notification)
Migration Day (T-0):
Step 1: User disconnects Ethernet cable (8:00 AM)
• User unplugs Ethernet cable from laptop
• Ethernet port disabled remotely (switch port shutdown)
Step 2: User connects to Corp-Secure-7 SSID
• Windows: Settings → Network → WiFi → "Corp-Secure-7"
• Mac: WiFi menu → "Corp-Secure-7"
• Authentication: Automatic (802.1X, uses existing AD credentials)
Step 3: IT verifies connectivity
• Check DNAC: User laptop connected, MLO active, >4 Gbps PHY rate
• Check ISE: User authenticated successfully, SGT assigned
• Ping test: ping google.com (verify internet connectivity)
Step 4: User tests applications
• Open Outlook (email sync)
• Join test Webex meeting (video quality check)
• Access SharePoint (large file transfer test)
Step 5: IT marks migration complete
• Update migration tracker spreadsheet: [User], [Date], [Status: Success]
• User added to "wireless-only" AD group (for reporting)
Post-Migration (T+1 day):
• User receives survey email (satisfaction, issues, feedback)
• IT monitors user performance (DNAC client 360 view)
• User can request "opt-out" within 7 days (revert to wired)
Duration per User: 15-20 minutes (including verification)
Daily Migration Capacity: 50-60 users per IT tech × 6 techs = 300-360 users/day
6.4.2 Batch Migration Procedure (Floor-by-Floor)¶
Mumbai Floor 6 Example (80 Executives):
Week 11: Executive Floor Wireless Migration
Monday (Day 1): Preparation
• 8:00 AM: IT team arrives, setup helpdesk on Floor 6
• 9:00 AM: Send "migration today" reminder email
• 10:00 AM: Disable Ethernet ports (40 ports, West Wing)
• 10:15 AM: Roaming techs assist users connecting to Corp-Secure-7
Monday Metrics:
• Users migrated: 40 (West Wing)
• Success rate: 95% (38 successful, 2 needed assistance)
• Average time: 12 minutes per user
• Issues: 2 users wrong password, 1 user laptop WiFi 6 only (acceptable)
Tuesday (Day 2): Continuation
• 10:00 AM: Disable Ethernet ports (40 ports, East Wing)
• 10:15 AM: Roaming techs assist users
Tuesday Metrics:
• Users migrated: 40 (East Wing)
• Success rate: 97% (39 successful, 1 needed assistance)
• Cumulative: 80 users migrated in 2 days ✓
Wednesday-Friday (Day 3-5): Monitoring & Support
• Helpdesk on-site for any issues
• Monitor DNAC/Splunk for performance degradation
• Survey collection (target: 80% response rate)
Week 11 Summary:
• Total users migrated: 80 executives
• Success rate: 96% (77 successful first attempt, 3 needed assistance)
• User satisfaction: 94% (survey results)
• Wired ports freed: 65 ports (54% reduction on Floor 6)
• Status: Migration SUCCESSFUL ✓
6.4.3 Troubleshooting Guide (Common Issues)¶
| Issue | Frequency | Root Cause | Resolution | Time |
|---|---|---|---|---|
| Cannot find Corp-Secure-7 SSID | 15% | User searching for old "Corp-Secure" SSID | Instruct user to connect to "Corp-Secure-7" | 2 min |
| 802.1X authentication failed | 8% | Expired AD password or certificate | User resets AD password, reconnect | 5 min |
| Connected but no internet | 5% | ISE posture check failed (outdated AV) | User updates antivirus software, reconnect | 10 min |
| WiFi 7 not detected (WiFi 6 only) | 3% | Older laptop (WiFi 6 chipset) | User connects to Corp-Secure-7 (backward compatible, 1-2 Gbps) | 2 min |
| Slow performance (<1 Gbps) | 2% | User far from AP (>15m) | Relocate user desk closer to AP, or provide wired port | 15 min |
| Intermittent disconnections | 1% | Driver issue or AP firmware | Update WiFi driver, escalate to L2 if persistent | 20 min |
Escalation Path:
Level 1 (Helpdesk Technician): 90% of issues resolved
• Connection issues, wrong SSID, password resets
• Resolution time: 5-10 minutes
Level 2 (Network Engineer): 8% of issues escalated
• ISE policy issues, performance degradation, driver updates
• Resolution time: 20-30 minutes
Level 3 (Wireless Architect): 2% of issues escalated
• AP firmware bugs, channel interference, WLC misconfig
• Resolution time: 1-2 hours (may require change control)
6.5 Rollback Procedures¶
6.5.1 Individual User Rollback¶
Scenario: User requests to revert to wired due to performance or reliability concerns.
Procedure:
Step 1: User submits rollback request (within 7 days of migration)
• Email to helpdesk@abhavtech.com
• Subject: "Rollback Request: [User Name], [Floor], [Desk]"
• Reason: [Performance issue / Preference / Other]
Step 2: IT verifies request
• Check DNAC: User's WiFi performance metrics (throughput, latency, packet loss)
• Check ISE: User's connection history (frequent disconnections?)
• Determine: Legitimate issue or user preference?
Step 3: Re-enable wired port (if available)
• Switch command: no shutdown interface GigabitEthernet1/0/X
• Verify: Port operational, link up
• User: Reconnect Ethernet cable
Step 4: Update migration tracker
• Mark user as "rolled back" in spreadsheet
• Reason documented for future analysis
• User removed from "wireless-only" AD group
Duration: 15-30 minutes (depends on port availability)
Success Rate: 98% (rollback almost always successful)
Rollback Statistics (Expected):
• Rollback rate: 5-8% of migrated users
• Most common reason: "Prefer wired" (60%), "Performance issue" (30%), "Frequent disconnections" (10%)
• Timing: 80% of rollbacks within 3 days of migration
6.5.2 Floor-Wide Rollback¶
Scenario: Critical issue discovered post-migration (e.g., AP firmware bug causing widespread disconnections). Need to rollback entire floor.
Procedure:
Step 1: Incident declared (Severity 1)
• NOC detects widespread disconnections (>20% of users on Floor 6)
• Incident manager convened (CTO, Network Architect, Helpdesk Manager)
• Decision: Rollback required
Step 2: Emergency communication
• Email to all Floor 6 users: "Temporary wireless issue, reverting to wired"
• Slack announcement: "IT team restoring wired connectivity"
• Estimated downtime: 30 minutes
Step 3: Re-enable all Ethernet ports (batch operation)
• Switch CLI (per floor switch):
```
config t
interface range GigabitEthernet1/0/1-48
no shutdown
end
write memory
```
• Verify: All ports operational (show interface status)
Step 4: User reconnects Ethernet cables
• Users physically reconnect Ethernet cables to desks
• Verify internet connectivity (ping test)
• IT roaming techs assist users who need help
Step 5: Investigate root cause
• Identify WiFi 7 AP firmware bug (WLC logs, DNAC)
• Workaround: Downgrade AP firmware to previous stable version
• Testing: Verify fix in lab environment before re-migration
Step 6: Plan re-migration
• Once fix validated, schedule re-migration (T+7 days)
• Communication: "WiFi 7 issue resolved, re-migration [Date]"
• Lessons learned: More rigorous firmware testing in pilot phase
Duration: 30-60 minutes (emergency rollback)
Impact: Minimal (users back to wired, no productivity loss)
Frequency: Rare (expected <1% chance per migration)
6.5.3 Rollback Decision Matrix¶
When to Rollback:
| Scenario | Rollback Required? | Timeline | Decision Maker |
|---|---|---|---|
| Individual user dissatisfaction | Yes (if requested within 7 days) | Same day | Helpdesk Manager |
| <5% users report issues | No (troubleshoot individually) | N/A | Helpdesk Manager |
| 5-10% users report issues | Maybe (investigate root cause first) | 1-2 days | Network Architect |
| >10% users report issues | Yes (likely systematic issue) | Immediate (30 min) | Incident Manager |
| P1 incident (executive complaints) | Yes (executive floor priority) | Immediate (15 min) | CTO |
| Security vulnerability discovered | Yes (immediately disable WiFi) | Immediate | CISO |
6.6 Success Metrics & Monitoring¶
6.6.1 Key Performance Indicators (KPIs)¶
Migration Progress Metrics:
| Metric | Target | Measurement | Frequency |
|---|---|---|---|
| Wireless Adoption Rate | >85% by Q2 2026 | (Wireless users / Total users) × 100 | Weekly |
| Migration Success Rate | >95% first attempt | (Successful migrations / Total attempts) × 100 | Daily |
| User Satisfaction | >90% satisfied | Post-migration survey (5-point Likert scale) | Per migration wave |
| Rollback Rate | <8% | (Rollbacks / Total migrations) × 100 | Weekly |
| Wired Port Reduction | 54% (15,840 → 7,350) | Active ports before vs after | Monthly |
| Switch Decommissioning | 144 switches | Switches removed from production | Quarterly |
Technical Performance Metrics:
| Metric | Target | Measurement | Frequency |
|---|---|---|---|
| Average Throughput | >4 Gbps (320 MHz sites) | DNAC Client 360, iPerf3 testing | Daily |
| Average Latency | <10ms | DNAC, ping monitoring | Continuous |
| AP Channel Utilization | <50% | WLC, DNAC RF analytics | Hourly |
| Client Connection Success Rate | >98% | ISE authentication logs | Daily |
| Roaming Success Rate | >99% | WLC roaming statistics | Daily |
| P1 Incident Rate | 0 incidents/month | ServiceNow incident tracker | Monthly |
6.6.2 Real-Time Monitoring Dashboards¶
Dashboard 1: Migration Progress (Splunk)
# Migration Progress Dashboard (Updated Daily)
index=abhavtech_migration sourcetype=migration_tracker
| stats
count(eval(status="migrated")) as migrated,
count(eval(status="pending")) as pending,
count(eval(status="rolled_back")) as rolled_back,
count as total
| eval adoption_rate = round((migrated / total) * 100, 2)
| eval rollback_rate = round((rolled_back / total) * 100, 2)
| table migrated, pending, rolled_back, adoption_rate, rollback_rate
# Example Output:
# migrated | pending | rolled_back | adoption_rate | rollback_rate
# 1,420 | 13,500 | 115 | 9.5% | 0.8%
Dashboard 2: Wireless Performance (DNAC)
DNAC → Assurance → Dashboards → "WiFi 7 Migration Performance"
Widgets:
1. Average Client Throughput (last 24 hours)
• Mumbai: 4.5 Gbps ✓
• Chennai: 4.3 Gbps ✓
• London: 2.8 Gbps ⚠️
2. Client Connection Success Rate
• Overall: 98.2% ✓ (Target: >98%)
3. Top 10 APs by Client Count
• MUM-F6-AP01: 18 clients (healthy)
• MUM-F6-AP02: 16 clients (healthy)
• ...
4. Poor Performing Clients (Throughput <1 Gbps)
• 3 clients (0.2% of total)
• Root cause: Distance >20m from AP
• Action: Relocate desk or provide wired port
6.6.3 Weekly Migration Reports¶
Report Template (Sent to CTO, Network Architect, IT Managers):
WEEKLY WIRELESS MIGRATION REPORT
Week: [Date Range]
Prepared by: Network Architect
MIGRATION PROGRESS:
• Users migrated this week: 320
• Cumulative total: 1,740 (12% of 14,920 target)
• Adoption rate: 12% (Target: 85% by Q2 2026)
• On track: ✓ Yes (ahead of schedule by 5%)
PERFORMANCE METRICS:
• Average throughput: 4.4 Gbps (Target: >4 Gbps) ✓
• Average latency: 9.5ms (Target: <10ms) ✓
• User satisfaction: 93% (Target: >90%) ✓
• Rollback rate: 6% (Target: <8%) ✓
ISSUES & RESOLUTIONS:
• Issue 1: 3 users reported intermittent disconnections
Resolution: Updated Intel WiFi driver (BE200) to latest version
Status: Resolved ✓
• Issue 2: 1 user slow performance (<2 Gbps)
Resolution: User desk relocated from far corner to near AP
Status: Resolved ✓
NEXT WEEK PLAN:
• Target: Migrate Chennai Floor 4 (60 executives)
• Preparation: Pre-stage ISE accounts, send T-7 notification
• Staffing: 4 roaming techs, 2 helpdesk staff on-site
RISKS:
• Risk 1: Holiday week (reduced user availability)
Mitigation: Shift migration to following week
• Risk 2: WLC upgrade scheduled (potential conflict)
Mitigation: Coordinate with WLC team, schedule non-overlapping window
6.7 Phase-Specific Migration Details¶
6.7.1 Phase 5A (Pilot) - Week 1-16¶
Scope: - 115 WiFi 7 APs deployed - 1,420 users (80 Mumbai executives, 60 Chennai executives, 200 Bangalore, 70 London, 1,010 baseline)
Migration Timeline:
| Week | Site | Floor | Users | Status |
|---|---|---|---|---|
| Week 11 | Mumbai | Floor 6 (Executives) | 80 | ✅ Complete (Week 11-12) |
| Week 12 | Chennai | Floor 4 (Executives) | 60 | ✅ Complete (Week 12) |
| Week 13 | Bangalore | Full branch (both floors) | 200 | ✅ Complete (Week 13-14) |
| Week 14 | London | Floor 2 (Executives) | 70 | ✅ Complete (Week 14) |
| Week 15-16 | All sites | General office (baseline data) | 1,010 | ✅ Complete (voluntary adoption) |
Outcomes: - Wireless adoption: 85% (1,207 of 1,420 users migrated) - Rollback rate: 6% (85 users) - User satisfaction: 92% - Technical performance: All 3 use cases validated ✓
6.7.2 Phase 5B-Wave 1 (Critical Sites) - Week 17-30¶
Scope: - 400 WiFi 7 APs deployed - 6 HQ sites: New Jersey, Dallas, Frankfurt, Singapore, Tokyo, Sydney - 5,200 users (primarily executives + conference rooms)
Migration Strategy: - Focus: Executive floors + conference centers (Category A devices) - Wired exceptions: Engineering workstations (Category B, wired on request) - Timeline: 14 weeks (2-3 weeks per site)
Expected Outcomes: - Wireless adoption: 75% (3,900 of 5,200 users) - Rollback rate: <7% - User satisfaction: >88%
6.7.3 Phase 5B-Wave 2 (Regional Expansion) - Week 31-52¶
Scope: - 550 WiFi 7 APs deployed - 8 regional sites: Hong Kong, Delhi, Amsterdam, Paris, Madrid, Milan, Chicago, Toronto - 6,000 users (general office floors)
Migration Strategy: - Focus: General office wireless-first (Category A + Category B devices) - Wired retention: Desktop PCs, IP phones, printers (Category C) - Switch consolidation begins: Decommission 60 access switches (first batch)
Expected Outcomes: - Wireless adoption: 78% (4,680 of 6,000 users) - Switch decommissioning: 60 switches (18% of 330 total)
6.7.4 Phase 5B-Wave 3 (Branch Rollout) - Week 53-65¶
Scope: - 155 WiFi 7 APs deployed - 5 branch sites: Mexico City, Remaining branches - 2,300 users (complete wireless-first transformation)
Migration Strategy: - Focus: Final branch sites, complete transformation - Switch consolidation completes: Decommission remaining 84 switches - Wired-only devices remain (Category D: servers, BMS, infrastructure)
Expected Outcomes: - Wireless adoption: 85% (1,955 of 2,300 users) - Switch decommissioning: 144 total switches (44% of 330) - Final wired port count: 7,350 (down from 15,840, 54% reduction)
6.8 Lessons Learned & Best Practices¶
6.8.1 Key Success Factors¶
From Phase 5A Pilot:
-
Over-communicate: 3-week advance notice prevents surprises. Users appreciate clarity.
-
On-site IT presence: Roaming technicians on migration day reduces anxiety, speeds resolution.
-
Opt-out option: Providing "wired on-demand" option (7-day window) increases trust, reduces resistance.
-
Phased approach: Start with executives (tech-savvy, high visibility) builds momentum for general rollout.
-
Data-driven decisions: Real-time monitoring (DNAC, Splunk) identifies issues early, enables proactive remediation.
6.8.2 Common Pitfalls & Avoidance Strategies¶
| Pitfall | Impact | Avoidance Strategy |
|---|---|---|
| Insufficient communication | Users surprised, confused | 3-week advance notice, multiple channels (email, Slack, town hall) |
| Inadequate helpdesk staffing | Long wait times, user frustration | 3× normal staffing during migration week, on-site roaming techs |
| No rollback plan | Users feel trapped, resistance increases | Document rollback procedure, communicate opt-out option |
| Forced migration | User resentment, low satisfaction | Voluntary adoption, "wireless-first" not "wireless-only" (wired on request) |
| Poor performance | Rollbacks increase, satisfaction drops | Dense AP deployment (1 per 1,333 sq ft), continuous monitoring |
| Ignoring feedback | Same issues repeat across waves | Post-migration surveys, weekly reports, lessons learned |
6.9 Migration Framework Summary¶
Key Principles: - User-centric: Voluntary adoption, opt-out option, clear communication - Data-driven: Continuous monitoring, real-time dashboards, weekly reports - Phased approach: Pilot → Critical Sites → Regional → Branches - Rollback-ready: Every migration has documented rollback procedure
Expected Outcomes (End of Phase 5B, Q2 2026): - ✅ 85% wireless adoption (12,682 of 14,920 users) - ✅ 54% wired port reduction (15,840 → 7,350 ports) - ✅ 144 access switches decommissioned (330 → 186 switches) - ✅ $3.2M CapEx savings (avoided switch replacement) - ✅ $420K/year OpEx savings (power, cooling, maintenance) - ✅ >90% user satisfaction
Success Criteria: All Phase 5B success criteria met → Wireless-first transformation complete → "Mission Accomplished"