Xtera Communications

AscenLinkNo. 080515

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The Challenges

• Reliability– Single point failure of Internet is common– ISP downtime– Need to provide 7x24 uninterrupted services

• Performance– Lack of bandwidth, overloading a single connection

– Uneven distribution of traffic between multiple connections

– Bandwidth abuse

• Cost– Prevent costly line upgrade, ex. T3, T1 and E1– Provide efficient management on multiple links– Improve productivity

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Insufficient Bandwidth

Internet

ISP 1 ISP 2

0.512 Mbps

Internet

= 100 MbpsLAN

ISP

0.512 Mbps0.512 MbpsOverloading

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Risks Associated With Single Connection

T1 Leased Line

ADSL

ISP

ISP

INTERNET

ATUR

router

Router is down on server sideXLeased line loses connectionXRouter is down on ISP sideXInterior routing problems in ISPX

Instantaneous over throughputX

DSLAM is down on ISP sideX

Telephone line is brokenX

ATUR is downX

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AscenLink - The optimal WAN solution

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What is AscenLink

• WAN Link Load Balancer– Reliable network access

• WAN health detection• Fault tolerance (Inbound + Outbound)

– Maximizes network performance• Bandwidth aggregation • Intelligent routing algorithm

– Quality network services• Bandwidth management• Efficient and reliable services

– Management• Intuitive and friendly UI

2008.05.15

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Features of AscenLink

• Auto Routing (Outbound load balance)• Multihoming (Inbound load balance)• Optimum Routing• High Availability• Tunnel Routing• Bandwidth Management• High Availability of Server• Firewall• Connection Limit• Statistics• LinkReport

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Auto Routing

• Outbound Load Balance– Connection – By traffic, connection, weight,

optimal route and etc.

• Outbound Fault Tolerance– WAN health detection– Auto fail over / fail back

Internet

ISP 1 ISP 2

IdleOverloading

✕ISP Down

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Multihoming

• Inbound Load Balance– SwiftDNS

• Built-in DNS• DNS Relay

– By traffic, weight and optimum routing

• Inbound Fault Tolerance– WAN health detection– Auto fail over / fail back

• Multihoming Backup• Does not need ISP support

and BGP

Internet

ISP 1

ISP 2

ISP 4

ISP 3

IdleOverloading

✕ISP Down

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Optimum Routing

• Optimal WAN link• RTT and WAN loading• Avoids peering issues between ISPs• Provides real WAN status• Auto Routing and Multihoming

Optimum Routing

Internet20M

10M

10G

500M

ISP 3

ISP 1

ISP 2

RTT=200ms

RTT=30ms

Optimum Routing

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High Availability

• Port-Level HA– Redundant LAN Port– Redundant DMZ Port

• Support spanning tree deployment with switches

• Avoid single point of failure

Internet

ISP1ISP2 ISP3

ISP4

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Tunnel Routing

• Based on each packet• Single connection over multiple links

– Bandwidth aggregation– Load balance– Fault tolerance

• Supports:– Dynamic IP address– NAT pass through– AES Encryption Internet

123456

123456

1

12

22

33

4

1

52

6

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Headquarter Branch

Tunnel Routing (Cont.)

• App.– VPN, streaming, data synchronization– Intranet – Central routing

InternetISP 1

ISP 2

ISP 3

ISP 4

VoIP Video Conf.

Data Center

VoIP Video Conf.

Data Center

WAN = LAN

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Issues on VPN

• Transmission is always slow:– Bottlenecked by low speed connection– Line upgrade is the only method to improve

performance

• Built on single connection:– No fault tolerance

– Re-establish after line down

InternetISP 1

ISP 2VPN initialize EstablishedEstablished

2M✕3M

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Tunnel Routing on VPN

• Load balancing and fault tolerance on VPN– Bandwidth aggregation – Improves performance of VPN– Provides uninterrupted access to VPN

InternetISP 1

ISP 2

ISP 3

ISP 4

✕

AscenLink Tunnel Group

123456 1 1

2 2 2 3

1 5

2 62 4

123456

3M

2M

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Tunnel Routing on Intranet

• Intranet between HQ and branches• Easy to implement• AES Encryption• Central routing

Headquarter

Taipei Branch Office

PPPoEADSL

PPPoEADSL

DHCPADSL

London Branch Office

PPPoEADSL

Fixed IP Lease Line

PPPoEADSL

PPPoEADSL

Internet

Tunnel GroupTunnel Group

Multi-site Intranet DeploymentMulti-site Intranet Deployment

2008.05.15

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Advantages of Tunnel Routing

• Comparison with common WAN Load Balance devices– Capable of handling VPN traffic– Aggregate bandwidth for single connection

applications (VoIP, Video Conference)

• Unique Features of TR:– Support dynamic IP networks such as PPPoE or

DHCP– Split a connection into packets and redirect them

among different TR groups– Support Central Routing– Backup between AR/TR

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Bandwidth Management

• Policy based QoS• Based on L3 and L4 information• Guarantee / limit bandwidth• Prioritizes• Management by schedule

P2P & YouTube 1~3M

ERP & Oracle 10~100k

VoIP & Video Conf. 5~20kVoIP & Video Conf. 300~500k

ERP & Oracle 1~2M

P2P & YouTube 10~50k

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High Availability of Servers

• Server health detection• Fail over between servers• Allocate loading over servers• Aided with Multihoming to

achieve the realization of reliability for outbound internet service

Internet

ISP 1 ISP 2

✕Server Down

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Firewall

• Access control list• DMZ• Layer 7 protocol support

– IM (Skype / MSN / Yahoo Messenger / ICQ / QQ)– P2P (eDonkey / Bitorrent / Gnutella / WINNY)– VoIP (SIP / H323)

InternetLAN

DMZ

✕Access Deny

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Connection Limit

• Proactive detection of abnormal traffic• Limit the number of concurrent connections

from each IP address

INTERNET

detect ! VIRUS !!

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Real-time Statistics

• WAN Links• Traffic classes• Tunnel status• Tunnel traffic statistics• Virtual server status• Connection limit• Network interface information• WAN Link health detection• RIP status• DHCP lease information

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LinkReport

Powerful reporting system

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Benefits of AscenLink

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Benefits for Performance

• Auto Routing & Multihoming• Efficient usage between links • Optimal connection path• Bandwidth aggregation • Greater overall performance Internet

Trunk multiple links

Leased line

ISDN

XDSL

Cable Modem

……

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Benefits for Reliability

• WAN Health Detection System• HA deployment• Automatic Fail over / Fail back• 24 X 7 connectivity, “Always on” business

Internet

ISP 3

ISP 2

ISP 1✕

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Advantages of AscenLink• Tunnel routing

– Fast and uninterrupted for single connection applications

• Bandwidth management– Prevents bandwidth abuse– Guarantee performance of critical services

• High server availability– Non-stop servers– Prevents overloading of servers through traffic

distribution• Efficient and Continuous network services

VoIP Video ConferenceMail Servers

Web ServersData Center / ERP

/ Oracle Internet

ISP 1

ISP 2

ISP 3

2008.05.15

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Benefits for Cost• Reduce cost of WAN links

– Bandwidth aggregation– Tunnel routing

• Avoid business/financial loss– Fault tolerance mechanisms

• High productivity– Best quality of network connectivity and services to

business operation and customers

• Intuitive UI, low maintenance and low management cost

• Highly efficient and effectiveBusinessBusiness

EfficiencyEfficiencyReliabilityReliability

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29

Customers

Autoridad Portuaria de Algeciras.

Autoridad Portuaria de Bilbao. Canal Isabel II Ayto de Majalahonda Grupo Bruesa Mitsubishi España. Scheneider Electric Renta4. Telyco (Grupo Telefónica). Arascon Vias y Obras. Grupo Vasco Catalana. Tropical Turística Canarias. Hoteles Bahia Del Duque. Caritas Grupo Persan. Mutualidad de Procuradores

de Tribunales de España. Consorcio de Compensación

de Seguros. Universidad de Francisco de

Vitoria.

Fundación Felipe II. Idealista. Colegio Oficial de Arquitectos

de Cantabria. Gaiker Grupo Anuntis. Educación Corporativa. Nuracon. Lidera Networks. Acorde. Divisa IT. InterDigital. Wimax Online ODM Compolaser. HP Sysntar Computer Services. BC Sistemas. Mirai España. Icons.

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Our Success Stories

2008.05.15

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IBM Dakshwww.daksh.com

2008.05.15

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IBM Daksh call center

• Background– IBM Daksh is a the leading business processing and

outsourcing service provider. Their major call center is located in Gurgaon, in the Indian state of Haryana.

• Challenges– multiple servers on the DMZ, that needed to be load-

balanced and protected against link failure– 6000 users divided into 10-15 groups, where bandwidth

management and QOS is required for outbound traffic, and based on different policies for each group.

– With 8 E1 links

– Link failures are unacceptable

2008.05.15

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IBM Daksh call center (Cont.)

• Solution: Deploy AL800 HA in their network edge to aggregate 8 E1 from two different ISPs

• Results:– VPN connections are load

balanced and protected.– Policy based QoS can be

implemented.– HA deployment, reduces risk

of failure. – Servers operate efficiently

and traffic is fully optimized.

2008.05.15

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Groupo Bruesawww.bruesa.com

2008.05.15

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Groupo Bruesa• Background

– Groupo Bruesa is a leading construction company with branch offices located all over Spain.

• Challenges– Critical applications needed to be transmitted between HQ

and branch offices– VPN application is used between HQ and branch offices.– No back up line

2008.05.15

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Challenges

Branch Office

Lease Line

Head Quarter

Lease Line

Branch Office

• Expensive leased line

• No Fail-over and load balance

• Insufficient bandwidth

• Hard to increase bandwidth

• VPN performance Issue

VPN Box VPN Box

VPN Box

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Solution–AscenLink VPN TunnelSolution:

Install AL680 in HQ and AL320 in each

branch-offices

Benefits:

• Adding Affordable ADSL

• VPN Fault Tolerance/Load balancing

• Bandwidth Expansion

• Better Performance

Branch OfficeBranch

Office

Lease Line

Head Quarter

Tunnel Tunnel

VPN Box

VPN BoxVPN Box

Internet

Lease Line

ADSL

ADSL ADSL

ADSL

2008.05.15

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BMW/Sauber F1 Racing teamwww.bmw-sauber-f1.com

2008.05.15

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Background & Challenges• Background:

– BMW/Sauber F1 was looking for a solution to ensure WAN network connectivity as they transfer important racing data between the circuits and their Headquarter lab. In the past, they used satellite link to transfer all the data.

• The Challenges:– Satellite Link is unstable– Single connection risk– Dynamic IP

2008.05.15

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Solution: AscenLink• By using AscenLink at their Switzerland HQ and at each

racing circuit, the goal of reliability, uninterrupted connection and greater transfer speed is achieved.

• Benefits– Huge increase in bandwidth– Less latency, quick response– Lowers connection cost– 100% guarantee of connection ability.

2008.05.15

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MSC Software Corporationwww.mscsoftware.com

2008.05.15

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MSC Software

• Background– MSC Software is a leading software company with over 50

branch offices worldwide, 24 branch offices in Europe.

• Challenges– Critical applications needed to be delivered between

German and UK branches– Bandwidth expansion was vital– VPN load balancing required

2008.05.15

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MSC Software (Cont.)

• Solution: Implement AL430 at German and UK branch office to implement tunnel routing

• Results:– Bandwidth expanded on

affordable ADSL– VPN load balanced– Critical applications’ bandwidth

such as VC is guaranteed.– WAN connection is optimized.

2008.05.15

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Level 421 GmbHwww.level421.com

2008.05.15

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LEVEL 421 GmbH

• Background– Level 421 is a satellite broadband service provider with

many satellite hubs in EMEA.

• Challenges

– The need for central traffic control traffic– Avoid redundant connection on each satellite hub– Bandwidth expansion is necessary

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Level 421 GmbH (Cont.)• Solution: Implement AL430

in HQ and AL320 at regional satellite hubs

• Results:– Central routing control is

fulfilled.– Tunnels were built

between HQ and each satellite hub. Thus expanding bandwidth.

– Redundant connections eliminated.

2008.05.15

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The backhaul infrastructure of a German WISP

2008.05.15

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Background

• Overview Förderverein Bürgernetz Dresden e.V. (Dresden) provides wireless

network services in the rural area where DSL lines are unable to be deployed. A total of 80 hotspots centered in Dreden and distributed in Coswig, Radebeul, and Freital was needed to serve

thousands of users simultaneously.

• Challenges– Achieve bandwidth expansion with multiple WAN

links– Route various users to different WAN links and

avoid unavailable Internet services – Traffic management

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Förderverein Bürgernetz Dresden e.V.

• AscenLink 430 aggregate 4 DSL lines with total 30 Mbits WAN connection

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Förderverein Bürgernetz Dresden e.V.

• Benefits

– Direct traffic to different links and prevent service disruptions from WAN link failure

– WAN traffic management assure optimal performance

– Easy deployment and central management of all WAN links

– Comprehensive statistics and reports– Scalability for future expansion

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Singapore National Day Parade

2008.05.15

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Background

• Background: Singapore's National Day Parade is a yearly extravaganza with more than 50,000 participants, and over 65,000 spectators.

• Challenges:– Due to security concerns, surveillance cameras needed to

be installed in order to build a multimedia network, and provide a secure backhaul to the event.

– The NDP WLAN covers over 200 clients includes IP cameras, and VoIP phones.

– Requires high quality up / downloads such as video transmission between organizer’s headquarters to the national stadium.

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Solution: AscenLink 680 HA

• Implemented AL680 HA• NDP network used 2*AscenLink AL680 to achieve High

Availability and 30 hotspots mesh nodes, connects 50 access points, 40 cameras, 200 mobile laptops, PDAs, and Wi-Fi phones

• Benefits– Non-Stop and reliable connection was built.– Video, VoIP application quality was guaranteed.

2008.05.15

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Singapore NDP (Cont.)

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Singapore NPD WLAN

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NEXION

• Trunks multiple Internet Fiber to replace point-to-point Fiber– Achieving 90% of combined bandwidth

• Significant cost reduction• High-speed Video transmission from HQ to TV and

train stations

TV Station B

HD Decoder

TV Station A

HD Encoder

Internet TV Station E

TV Station C

TV Station D

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Shih Chien Universitywww.usc.edu.tw

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Shih Chien University

Gigabit Ethernet

INTERNET

HiNet TANet

ADSL x 10

Succeeded in Achieving:

• Multi-link Load Balance• Multi-link Multihoming• Multi-link QoS• Gigabit Ethernet

Interface• Public IP Pass-through

AL 3000

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Specification

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AscenLink™ 200

• 4 * 10/100 Base-TX

• WAN links: 4

• WAN Bandwidth: 20 Mbps

• Load Balance: Outbound only

• Fault Tolerance: Outbound only

• Limited TR function (Client only)

• No High Availability

• Desk-top

• Branch Offices, SOHO

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AscenLink™ 320

• 4 * 10/100 Base-TX

• WAN links: 4

• WAN Bandwidth: 20 Mbps

• Load Balance: Inbound / Outbound

• Fault Tolerance: Inbound / Outbound

• Full function TR (Optional)

• No High Availability

• 1U Rack Mount

• Branch Offices, SOHO

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AscenLink™ 430

• 5 * 10/100 Base-TX

• WAN links: 8

• WAN Bandwidth: 40 Mbps

• Load Balance: Inbound / Outbound

• Fault Tolerance: Inbound / Outbound

• Full function TR (Optional)

• High Availability

• 1U Rack Mount

• Small-Medium Business

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AscenLink™ 680

• 5 * 10/100 Base-TX

• WAN links: 15

• WAN Bandwidth: 60 Mbps

• Load Balance: Inbound / Outbound

• Fault Tolerance: Inbound / Outbound

• Full function TR (Optional)

• High Availability

• 1U Rack Mount

• Medium-Large Business

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AscenLink™ 800

• 8 * 10/100/1000 Base-TX

• WAN links: 30

• WAN Bandwidth: 100 Mbps

• Load Balance: Inbound / Outbound

• Fault Tolerance: Inbound / Outbound

• Full function TR (Optional)

• High Availability

• 1U Rack Mount

• Large Business

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AscenLink™ 3820

• 3 * 10/100 Base-TX

• 2 * 10/100/1000 Base-TX

• 2 * 1000 Base-SX

• WAN links: 50

• WAN Bandwidth: 400 Mbps

• Load Balance: Inbound / Outbound

• Fault Tolerance: Inbound / Outbound

• Full function TR (Optional)

• High Availability

• 2U Rack Mount

• Headquarters Large Enterprise

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Thank You!Thank You!

2008.05.15