2. How important is IT to Healthcare?
• IT boosts Adventist cash by $2.2M
• http://www.healthcareitnews.com/news/group-increases-pos-
collections-2m
• Health system sees 50 percent increase in POS collections with
new platform
• "Right now eight of our 17 facilities are hitting or besting that target,"
Gary Friestad, Adventist Health
• Adventist HealthCare is a myITassessment Top 5 performer!
http://www.myitassessment.com/my-it-assessment-2013-top-5/
3. What are the key challenges?
• Security
• Uptime / Availability
• Application Performance
• Scalability
4. 5 Key Considerations
• Get a handle on your Assets (Scalability)
• Break out of Technology Silos (Reliability)
• Target specific areas for improvement (Performance)
• Predict future performance issues (Scalability & Performance)
• Implement a methodology for improvement, not reaction
• Focus on Lead, not Lag Metrics
5. Lead vs Lag Metrics
Lead Measure (Metric) Lag Measure (Metric)
Predictive : Measures something that leads to a
goal
Influenceable : We can impact this metric.
Trackable : We can see improvement and know
that this will help us reach our goals
Measures the goal
Example: Packet Loss, Jitter, Delay Example: MOS Score, Application Response
Time, Help Desk Ticket counts, User Complaints
7. Bandwidth is a TERRIBLE METRIC!
Mathis Formula
Rate <= (MSS/RTT)*(1 / sqrt{p})
http://www.slac.stanford.edu/comp/net/wan-mon/thru-vs-loss.html
8. Bandwidth Thinking leads to Poor
Performance
YOU CAN’T
SEE IN
HERE!!!!
100 Mbps
3Mbps
2 Choices:
1) Buffer
2) Drop
9. 5 Key Considerations
• Get a handle on your Assets (Scalability)
• Break out of Technology Silos (Reliability)
• Target specific areas for improvement (Performance)
• Predict future performance issues (Scalability & Performance)
• Implement a methodology for improvement, not reaction
• Focus on Lead, not Lag Metrics
10. Getting a handle on your Assets
1335
912
822 784 767
607 591 567
0
200
400
600
800
1000
1200
1400
1600
Network Equipment
Model
12. Software Details – Cisco 3750
1.33
2
3.8
4.6
6.66
6
1 to 5 6 to 15 16 to 30 31 to 50 51 to 100 100+
Different Software Loads
70 % of Healthcare
Organizations have
Security Vulnerabilities in
their Network Software
14. See the context of your network
What are the most
important links and how are
they performing?Some Considerations:
• Video Surveillance
• VMware (Virtualization)
• Cloud Services purchased
by LoB (Lines of Business)
15. Is it the Network or the Server?
Yes
50%
No
50%
SERVER LINKS WITH DROPPED PACKETS
Average Healthcare
customer with server
interface issues has 62
interfaces with issues
16. Be Targeted in your Approach
• 41 % of Healthcare Customers have Oversubscribed Line
Cards
• 130 – The average number of interfaces that drop packets due
to the oversubscription (Per Customer!)
56%
15%
15%
14%
Total Oversubscribed Ports
WS-X4548-GB-RJ45V
Oversubscribed 8:1
WS-X4648-RJ45V+E
Oversubscribed 2:1
WS-X4548-GB-RJ45
Oversubscribed 8:1
WS-X6148-GE-TX
Oversubscribed 8:1
17. Look for known offenders
985
500
373
304
247 223 188
0
200
400
600
800
1000
1200
WS-X6748-GE-TX
WS-X6148A-GE-45AF
WS-X6348-RJ-45
WS-X6724-SFP
WS-X6148-GE-TX
WS-X6148A-GE-TX
WS-X6548-GE-TX
33 % of Cisco 6500
Ports are on
Oversubscribed Line
Cards
“It is important to note that the 6148A-GE and the 6548-GE are both engineered with 8:1 oversubscription ratios and, as such,
while suitable at the access layer, these linecards would not be recommended to deploy as uplinks or within the distribution and
core layers – Cisco QoS Design Guide (Telepresence) “http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/tpqoscampus.html
18. Predict your Future….
• Can we deploy the new POS app?
• Can we put video everywhere?
• What would happen if we did X?
19. How to predict the future
• Stop looking at charts and get some numbers
• Calculate the 95th Percentile of BW Usage
• Determine what you can add on top of the 95th Percentile.
• This is your green light number
• Before you deploy any applications….Simulate the traffic you
expect to have on the network
• Tons of open source options here (D-ITG (recommended), iPerf, Cisco
IP SLA, etc)
• Or use a service (like ours)
20. 5 Key Considerations
• Get a handle on your Assets (Scalability)
• Break out of Technology Silos (Reliability)
• Target specific areas for improvement (Performance)
• Predict future performance issues (Scalability & Performance)
• Implement a methodology for improvement, not reaction
• Focus on Lead, not Lag Metrics
21. What do you do next
• Define your lead metrics
• Start with packet loss on the network (Best Lead Metric)
• Standardize your Network Software
• Identify context of Critical Interfaces
• Identify key target devices/interfaces
• Once you have that done, and are working on those metrics,
start to predict future state