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Thursday, June 9, 2016

ISP redundancy site design diagram example

Free example service level agreement (SLA) for your business.
Solution 1
Redundant site (ISP MTG, ISP True Tower)
  • Customer has link connected to ISP at either MTG or TTW site.
  • International & Domestic Gatway is primary at MTG and backup is TTW.
  • International & Domestic Gatway at MTG consists of multiple providers
    •  International Link >> TIG, IIG, VSNL
    •  Domestic Link >> CAT-NIX, TIG-NIX, TOT-NIX and TI
  • Some of Internaltional & Domestic provider has backup root
    • TIG >> Primary link/site is at MTG and backup is at TTW (both International and Domestic as well)
  • Equipment which installed International & Domestic link is redundant Hardware for instance CPU, FAN Tray, Power Supply, Port/Interface etc. and maintenace contract also.
  • Incase of MTG, primary site is down then the backup site is automatically take over
  • UPS system & Generator backup for both site (MTG and True Tower)
Solution 2
Redundant ISP(Primary) , TI (Backup)
  • Customer’s traffic normally flow via ISP 
  • In case of ISP’s Domestic is totally down then Customer’s Domestic traffic automatically flow via TI instead
  • In case of ISP’s International is totally down then Customer’s International traffic automatically flow via TI instead
  • In case of both ISP’s Domestic and International are totally down then Customer’s traffic automatically flow via TI instead as well 
Service Level Agreement

1. Guaranteed service level

1.1 Availability
The guaranteed availability of the services of the agreement is 99.7% in any calendar month, after which the service availability is classified as “reduced availability”. If the availability of the service falls below 99% in any calendar month then there is “excessive downtime” 

1.2 Network latency
If the average network latency in any calendar month for domestic Internet traffic exceeds 50 ms. or for international traffic exceeds 350 ms. then this is a case of reduced availability. If the average network latency in any calendar month for domestic Internet traffic exceeds 80 ms. or for international traffic exceeds 500 ms. then there is excessive latency downtime.

1.3 Packet loss
If the average packet loss in any calendar month for domestic Internet traffic exceeds 1% or for international traffic exceeds 3% then this is a case of reduced availability. If average packet loss in any calendar month for domestic Internet traffic exceeds 2% or for international traffic exceeds 5% then there is excessive packet loss downtime.

2. Service level credits

2.1 Reduced availability
In case of reduced availability, ISP will credit designated service fees components up to the equivalent of the service fees during the number of days in the calendar month that the provided service level did not meet the guaranteed service levels.

2.2 Excessive downtime
In case of excessive downtime, ISP will credit designated service fees components up to 10% for every day that the provided service level did not meet the guaranteed service levels, with a maximum of the total service charge for that month.

2.3 Force mature
ISP has committed, where possible, to redundant systems and/or providers of services that are delivers to its customers. In case of service interruptions that are outside the influence of ISP, ISP reserves the right to adjust the service level credits to the level of the service credits that it receives from its suppliers, whom ISP has no control over. ISP will go through reasonable endeavors to claim any damages of its clients at its providers.
3. Service delivery information

3.1 Statistics
On request and for certain connection types, ISP can activate bandwidth utilization statistics (MRTG) that can be made available to the customer through a web interface. These statistics can provide the customer with a global indication about his bandwidth utilization. The statistics cannot be used to determine the actual service level delivered by ISP since this depends on many factors one of which is the condition and throughput of the customer premises equipment, which is outside the area of control of ISP.

3.2 SMS alert
Instead of pager alert, ISP can alert the customer by SMS. Customer agrees in that case with the non-priority that SMS services have on the network of mobile providers and will not hold ISP liable for any delays in the notification.

Tuesday, June 7, 2016

How to plan LAN/WAN Network Refresh Project: End-of-Life equipment

Basic requirements: Framing, Value Drivers, Deliverables, Definition of Success and Project plan phase 1-5 for example
Network Refresh Project
Network Refresh Framing Document
  • Domestic sites with end of life equipment 
    • LAN edge switches
    • WAN routers
    • Equipment that has been in service for 5-7 years
    • Backup power supplies
  • Telecom closet assessment/audit
  • Power over Ethernet capabilities
  • Sites with appropriate infrastructure to support power requirements
  • Deployment of a standard architecture across all sites including equipment and protocols
  • Compliance with security standards
  • Removal of end of life equipment
  • Self containing rack units for sites without a telecom closet
  • Capitalized labor for remote offices that cannot be serviced by field team
Network Refresh Value Drivers
  • Reliability of the infrastructure supporting business critical applications and processes.
    • Reduced network downtime
    • Reduced MTTR
    • Increased redundancy
    • Decreased latency, higher bandwidth
  • Increased consistency and standardization of the WAN/LAN network.
    • Reduced cost of operating infrastructure
    • Reduced variance/variability in network infrastructure
  • Network readiness and scalability to support future IT initiatives and business needs
    • Video Conferencing, IPT, PoE support
  • Cost Avoidance/Savings
    • Mitigation of costs associated with increased equipment failures
    • Reduction in hardware and maintenance costs
    • Consolidation of hardware
  • Alignment with Enterprise Architecture roadmap 
Key Business Deliverables
  • Network Infrastructure – Upgraded LAN switches with PoE capability 
  • Increased bandwidth – Ability to accommodate additional traffic and support applications such as IPT and Video Conferencing.
  • Higher reliability/redundancy – Reduction of downtime and business incidents related to the LAN infrastructure
  • PoE capabilities – Ability to support IPT infrastructure
  • Reduced complexity of the LAN infrastructure – Reduction in overall cost of maintaining the LAN environment
Definition of Success
Vision of Success:  What does success look like with the Future/Desired state?
Full replacement of all End of Support Network switches and routers, resulting in a more reliable and supportable network, that is prepared to meet the future business and IT needs of the company.
Critical Success Factors:  What factors will ensure that the vision of success is met?
  • Incident Free deployments (No Business/Safety Incidents as a result of swapping out equipment.)
  • Project Schedule and Milestones completed on time.
  • Project completed within budget.
  • Infrastructure in Telecom closets is capable of supporting the new devices.
Success Metrics
  • Results:  Project completed on schedule, within budget, and resulting in a more reliable and supportable network.  
  • Business Incident Avoidance:
  • Financial Measures:

Phase 1
  • Gather information about the current network and understand business constraints 
Phase 2
  • Identify, Develop, and Select Alternatives:
  • Identified alternatives
  • Gather pricing on each alternative
  • Conduct Technical Reviews of each alternative
  • Develop selection criteria and weights to select an alternative
  • Complete high level design 
  • Complete the business requirement with project team and stakeholder
  • Design VLAN
  • Design IP Address For LAN, Server, Network Device, etc…
  • Design and support documentation 
  • Request approval to implement the system
Phase 4
  • Wire Fiber Optic Cable, Wire CAT6 LAN Cable
  • Install Network Device, Install Set Up Network Device
  • Testing & Tuning system, Install Monitoring tool
Phase 5
  • Review development, implementation and benefits of the LAN improvement project.
  • Training, Documentation, 
Close out project: Let's plan....

catalyst 4506 replacement guide

Brief Description: Replacement of 5513 due to numerous problems which led to network degradation.  A new 4500 will take its place.
Action / description Who What is deliverable? Status
1 Prep                
1.1 Assign IP address Local-IT Fri 7 Sep 2007 ( for testing and change it back to when we completed configuration ) DONE
1.2 Drawing Regional
1.3 Pre-configure and connect to network Local-IT Monday, September 10, 2007  inform to Regional DONE
1.4 Configuration Regional Tuesday, September 11, 2007
1.5 Prepare CEMS Change Regional Tuesday, September 11, 2007 DONE
1.6 Outage announcement Local-IT Tuesday, September 11, 2007 DONE
1.7 Testing the switch before cutover Regional Friday, September 14, 2007 DONE
2 Actual Cutover Saturday, September 15, 2007
08:30 a.m. to 05:00 pm
2.1 Cabling Local-IT 8:30 am – 01:00 pm.
2.2 Physical Replace the switch Local-IT 01:00  pm – 03:00 pm.
2.3 Testing
2.3.1 Soft Test
2.3.2 Physical Test (end user point signal check)        
03:00 pm – 05:00 pm.
3 Post Install      
3.1 Documentation Regional
3.2 Config revisions Regional
3.3 CEMS enrollment Regional
Note: All times shown here is Bangkok Time.

Detail Description: Before the Cutover:
- Pre-configure the 4500 switch.  Ports should be on vlan 15(  Must follow NST guides.
- Assign as MNGT IP.
- Test DHCP of PC when connected to the port
- Burn in test.

- Shutdown 5513.
- Clear out un-necessary cables on the cabinet.
- Mount the 4500
- Check connectivity with the core switch.
- Try getting IP address from DHCP server

Impact: - No Network Connectivity to Floor 15. Users are asked to move to other floors during the activity.

Resources Impacted:  THBKKSL4-5513