Post on 06-Dec-2015
description
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Agenda
• Introduction to Data Services Section• Metro Ethernet Technology• SLT Metro Ethernet Services• SLT Metro Ethernet Network
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Organizational structure
Team Leader
Eng/DS_SP Eng/DS_OP Eng/DS_Mtce
HS/DS & VoIP
HD/DN & IP Services
CEO
Team Leaders Team Leader
ServiceProvisioning
Team
Operation Teams
Maintenance Team
CMO
Eng/DS_NW
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• Local Leased Circuits [ Point to Point -PP]
• Internet Leased Line [ ILL ]
• International Private Leased Circuits [ IPLC ] –Local Extension
• Direct Inward/Outward Dialing[ DIOD ]
• IP VPN Last mile access
• Metro Ethernet
Data Services provided by SLT
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Data Networking - Typical ArchitectureSLT Managed Leased Line Network
Site-2
Site-1Site-3
Site-4
Data Node1
Data Node -2
Data Node -6
Data Node 3
Data Node -5
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Types of Networks;
1. Local Area Network (LAN)
2.Wide Area Network (WAN)
3.Metropolitan Area Network (MAN)
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• A group of computers and network communication devices interconnected within a geographically limitedarea, such as a building
• Characterized by,
• Transfer data at high speeds
• Exist in a limited geographical area
• Resources are managed by the company running the LAN.
Local Area Networks (LAN)
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• Interconnects LANs
• Characterized by,
• Transfer data at low speeds
• Exist in an unlimited geographical area
• Interconnects multiple LANs
• Connectivity and Resources are managed by a Telephone Company
Wide Area Networks (WAN)
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– High Speed Connectivity (10,20,50 Mbps….)• Point to Point Data Connectivity• Network Connectivity• Internet Connectivity
– Better Service Levels• Network availability - 99.999% (Can go out of service only
5.256 minutes per year)• Ring Access Networks• Highly available Data Nodes• Fast network resiliency
Customers say they need;
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– New and enhanced Services• LAN interconnections• Virtual Private LAN Services (VPLS)• Enhanced QoS (Quality of Service)
– Cost Effectiveness• Multiple Services on a single port• Cheap Services – particularly at higher speeds
Customers say they need;
Can we deliver these in the current Network ?
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Why Ethernet ?
- Most common Interface today- Cost effective - Supports very high Bandwidths (upto 1Gbps)- Flexible upgrades within a wide range (1Mbps to 1Gbps)
- Easy and simple to manage and maintain
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Ethernet as a Service
• Ethernet’s origins in the Enterprise– Used as a LAN connectivity technology– Just plug it in and start using it
• Ethernet’s new usage as a Service– Requires “service attributes” like other MAN /
WAN services• Ethernet UNI, Ethernet “VC”, Service Performance, etc.
Same Ethernet technology just used in a new waySame Ethernet technology just used in a new way
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Let’s look at TDM and other L2 Services
Inflexible Bandwidth Scalability• Increasing non-Ethernet service
bandwidth often requires:– New service (step function)
• T1 T3, FR ATM– New hardware
• new interface or equipment– New service provisioning
• different protocols / technologies• Often resulting in:
– Oversubscribing to meet growing bandwidth needs
OC-48
OC-12
OC-3
T3
T1
1.5M 45M 155M 622M
TDM hierarchy or L2 Service dictates
bandwidth increments and technology
Frame Relay
POS
ATM
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Ethernet Service Benefits over TDM/other L2 Services
Flexible Bandwidth Scalability• Increasing Ethernet service
bandwidth:– Requires just bandwidth provisioning– Provision only amount of BW needed
• Same protocol for LAN and MAN• Lower OpEx & CapEx with Ethernet
– 25-40% lower cost than• TDM, Frame Relay, ATM interfaces1
– 10x lower cost• than high speed SONET interfaces1
– Easier and less costly to meet growing bandwidth needs
OC-48
OC-12
OC-3
T3
T1
1.5M 45M 155M 622M
Ethernet provides flexible bandwidth
increments using same technology
Frame Relay
POS
ATM
1GbE
10/100MbE
1 Source: Network Strategy Partners, LLC
Ethernet
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Services Definition
MetroMetroEthernetEthernetNetworkNetwork
CustomerCustomerEquipmentEquipment
(CE)(CE)
User NetworkUser NetworkInterfaceInterface
(UNI)(UNI)
Service ProviderService ProviderResponsibilityResponsibility
Service Model: Services described as seen by CE, UNI to UNIService Model: Services described as seen by CE, UNI to UNI
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Ethernet Service – Basic Model defined in MEF
• Customer Equipment (CE) attaches to UNI
• CE can be – router– IEEE 802.1Q bridge (switch)
• UNI (User Network Interface)– Standard IEEE 802.3 Ethernet PHY
and MAC– 10Mbps, 100Mbps, 1Gbps or 10Gbps
• Metro Ethernet Network (MEN)– May use different transport and
service delivery technologies• SONET/SDH, WDM, RPR, MAC-in-MAC,
Q-in-Q, MPLS
CE
CE
CE
UNI
Metro Metro Ethernet Ethernet Network Network (MEN)(MEN)
UNI
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L1, L2
• Connection Oriented• Circuit Switched
Ex:-TDM, ATM, FR
• FR and ATM have a VC identifier. Therefore, we do not have to create labels.
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L2 & L3
• Traffic is switched• Control signal is routed
Ex:-IP/MPLS
• Ethernet does not have a label. Therefore, we have to create labels. We use MPLS.
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Why MPLS for Ethernet Services (EoMPLS)?
• More Scalable (Free label Space)• Sub 50msec resiliency (MPLS Fast Reroute)• Traffic Engineering (RSVP-TE)• Hierarchical QoS (HQoS)• Easy and simple to operate and maintain
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Traffic
Service
Ethernet Service Switch
Physical Network
Ethernet over MPLS over Ethernet
MPLS
Ethernet
Physical
IP
Ethernet
MPLS or GRE
.1q
GE,10GE etc.
Outer label
Service label=VC label=inner label
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Outer label 1
Ethernet
Inner label
Ethernet
Inner label
Outer label 2
Ethernet
Inner label
Outer label 3
Ethernet
Inner label
Outer label 4
EthernetEthernet
A E
D
C
B
Ethernet Ethernet
MPLS
LDP signaling session (TCP port 646)
RSVP-TE signaling
Ethernet frame: Get me to the other side
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Multiple Services on single port- IP-VPN access- Layer 2 VPN services (VPLS)- High Speed Data Links (LAN interconnections)- High Speed Internet
- Single Port
PE
CPEIP-VPN
High Speed Internet
VPLSHigh Speed Data
SLT Metro Ethernet Network
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Reliable Access
SLT Metro Ethernet Network
PE
Ethernet Connection
SiSi
Access Ring(1Gbps)
Core Ring(10Gbps)
- Customers are now seeking network availability requirements like 99.999% (5.256 minutes/year down time)
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A E
D
C
B
Primary Path
Secondary Path
Detour Path
1
23
- The switchover from the working link to the protection linkwill happen within sub 50ms to ensure that no impact onreal time applications
- MPLS (Multi Protocol Label Switching) with MPLS Fast Reroute enables this feature
High Speed Resiliency
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Enhanced Quality of Service (QoS)
Reserve 8 Mb/s
Reserve 2 Mb/s
Reserve 2 Mb/s
Reserve 4 Mb/s
16 Mb/s
Priority 01 - voice
Priority 02 - video
Priority 03 - Data
Priority 04 - Internet
• Installed SLA– Voice 2 Mb/s– Video 2 Mb/s– Data 4 Mb/s– Internet 8 Mb/s– TOTAL=16 Mb/s required
• Actual usage– Voice 1 Mb/s– Video 1 Mb/s– Data 4 Mb/s– Internet 10 Mb/s– TOTAL = 16 Mb/s used
• In SLT Metro Ethernet, the low priority traffic can burst when the high priority traffic is not available
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Ethernet Service
• MEF has defined 2 Ethernet Service Types
– Ethernet Line (E-Line) Service• Provides Point-to-Point connectivity
– Ethernet LAN (E-LAN) Service• Provides Multipoint-to-Multipoint (Any-to-Any)
connectivity
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ELINE Service Multiplexing
• In this example a single site has multiple ELINE connections to other sites multiplexed over a single UNI.
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Ethernet LAN Service (ELAN)
• Service is Multipoint-to-Multipoint fully connected
ELANELAN
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The simplicity of SLT Metro Ethernet model
Customer Router or Switch High Speed Ethernet on Fiber or Copper
SLT Metro Ethernet Network
Customer Location
SLT IP/VPN
High Speed Internet
SLT Internet Data Center
Point-to-Point
MultiPoint-to-MultiPointPoint-to-Multipoint
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• Typically required to connect;- Headquaters Building (Main Link)- Dissaster Recover Centers (DRC)
(LAN interconnections)
High Speed Data Links
Metro Ethernet
LAN interconnection
Head QuartersDRC Site
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SLT Metro Ethernet Network
Customer ALocation 1
Customer ALocation 2
Virtual Leased Line – VLL(Point–to–Point)
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Head QuartersSLT Metro Ethernet Network
Virtual Switch
Branch 1
Branch 2
Virtual Private LAN Service – VPLS(Point–to–Multipoint & Multipoint–to–Multipoint)
- Customer feels like remote offices are connected to the same LAN
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SLT Metro Ethernet Network
HQ
BR2BR1
SLTNetTelephone
Telephone
Internet FTP Server Video Server
Internet
FTP Client
Video Client
Video Client
Internet
HQBR
VLL
VPLS
Example
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VPN Access
- Metro Ethernet is used as the Access Network
Existing IP/MPLS BackboneSLT Metro Ethernet
Network
IP-VPN
SiSi
VPN Access
Edge Router
M-Agg
Branch A
Branch B
Branch C
Head Quarters
IP-VPN
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• Applications;- Web browsing- Hosting applications- Video Straeming- Multimedia- Cyber Cafe
High Speed Internet Links
SLT Metro
Ethernet Network
Internet
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Customer ALocation
Customer CLocation
Public Internet
SLT IP/VPN
Customer BLocation
SLT Metro Ethernet Network
SLT Internet Data Center
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• Available Speeds;- From 1 Mbps to 1000Mbps (1Gbps)
• Low Speeds (proposed);- 1, 1.5, 2, 3, 4, 5, 6, 8, 10Mbps
• High Speeds (proposed); - 10, 15, 20, 25, 30, 34, 40, 45, 50, 70, 100,
155, 200, 300, 400, 500, 700, 1000Mbps
Available Speeds
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SLT Metro Ethernet Network
SLT Metro Ethernet
The Provider Edge – “Metro Ethernet Switch” is installed in the customer premises to provide “Metro Ethernet services”
Ethernet Connection
Provider Edge (Metro Ethernet Switch)
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SLT Metro Ethernet
Ethernet ports are made available in the customer premises, to connect with other remote locations
Head Office
Branch Office A
Branch Office C
Branch Office BSLT Metro Ethernet Network
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Port types
• Access Port– 10/100/1000 Mbps– No IP address
• Network Port– 1/10 Gbps– Has IP address
1/1/1
1/1/10
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D
C
E A
B
10GE OPTICAL FIBER RING
GE OPTICAL FIBER RING
SLT Metro Ethernet Network architecture
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HK
MD
KPT
CEN
SI
Existing IP/MPLS Backbone
M.Agg=Metro Aggregation Switch
PE=Provider Edge
Internet Router
Internet
GE access rings
GE access rings
GE acce
ss rin
gs
GE access rings
GE access rings
10GE aggregation ring
GE
M.Acc=Metro Access Switch
GE
GE
GE
GE
GE
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MEN PROJECT IMPLEMENTATION10 G -Aggregation Ring
CEN, SI,KPT,HK, &MD
1G – Access RingsTotal No of Access Rings - 14
1. Central -052. SI -033. KPT -044. HK -015. MD -01
Total No of Buildings -90
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Summary
“SLT Metro Ethernet” brings the Network Provider Edge to the door step of the customer to deliver cost effective, high speed, scalable, reliable and multi-serviceEthernet Access to the customers through the sate-of-the-art MPLS technology