2. IP/MPLS
Data connectivity technology to
securely connect sites
MPLS Service
Layer-3 (IPVPN)
Layer-2 (ELINE, ELAN)
Used in high-performance networks.
Offers a smooth, consistent
experience for mission critical
applications.
1
IP/MPLS
Network
VRF/
IPVPN
VPLS/
ELAN
VLL/
ELINE
HQ DC
SITE
SITE
BRANCHES
HQ
BRANCHES
3. IP/MPLS
PROs
• High Performance
• Reliable
• Excellent Quality of Service
• Guaranteed SLAs
• Secure Connectivity over a
private network (non-internet)
CONs
• Cost: BW is expensive – rapid
data growth demands high BW
will result in increased OPEX.
• Delivery time: Longer time of
deployment
• Not optimized for Cloud services
• Expertise: MPLS networks are
complex and require team to
expert engineers to maintain
them.
2
4. SD-WAN
Access Agnostics: Brings together all layers of connection e.g MPLS, Internet, and LTE
into a single software-controlled WAN.
Reducing the costs of WAN connectivity costs by leveraging lower-cost services such
as Internet & optimizing the use of private MPLS links.
Speeding service agility by offering provisioning in the cloud.
Using analytics to drive intelligence, dynamic traffic prioritization, and load
balancing.
Increased performance of cloud applications
Providing OpEx benefits
3
6. SD-WAN
PROs
• Reduced WAN OPEX by leveraging
economical Internet links.
• Scalability to add new sites globally
using available internet links from an
automated cloud based software defined
platform
• Quick Delivery – no wait for dedicated
MPLS links
• Ease of Traffic steering from Portal
• Increased performance for Cloud apps.
• Secure connection among sites using
IPSEC tunnels.
CONs
• Less Reliable compared to MPLS:
Internet used as primary transport
medium which inherently best-
effort.
• Performance: Considering internet
as transport medium there is
always possibility of latency, delay
& jitter
• DDoS: Service may be interrupted
by denial of service attacks
originated from Internet.
4
7. What business needs?
5
SDWAN MPLS
Enterprises are changing & rapidly embracing Cloud technologies – Cloud adoption is inevitable
“Good enough” connectivity is not sufficient. Modern businesses consider Network as a strategic cloud enabler.
Technology is constantly evolving so do the ISP networks which are now having bigger & better pipes – however
MPLS link are still fairly expensive.
The benefits of SD-WAN are hard to deny, from cost to agility/flexibility to ease of use/deployment & scalability.
However, private-based networking such as MPLS will always still be in demand for large enterprises. Particularly
in businesses or institutions that have specific connectivity requirements with stringent SLAs .
Metro Ethernet Forum (MEF) recognition of SDWAN by defining standards in MEF 70 framework will help Enterprises
in their decision making of WAN selection.
Market Trends:
Modern organizations are welcoming SDWAN with rapid adaptation.
Existing large Enterprise (having existing MPLS to their DCs) are carefully evaluating SDWAN and started using
SDWAN in selective smaller sites.
MPLS & SDWAN will coexist with gradual increase in SDWAN adaptation and decrease in MPLS use.