1. Barracuda Link Balancer
Cost-Effective Network Performance and Availability
Version 2.5 | July 2014

2. Features ISP Link Management Services
Inbound and outbound link balancing
Intelligent link failover and failback
QoS/bandwidth shaping
Services
Site-to-site VPN
Authoritative DNS
DHCP

3. Common Internet Link/ISP Challenges
Increase Internet bandwidth cost effectively
Avoid link saturation or overflow during flash traffic
Protect against ISP outages and link failures
For outbound traffic to Internet
For inbound traffic to Services like Web and
Avoid traffic bottlenecks
Critical applications should respond quickly
De-prioritize bulk/non-critical traffic
ISP

4. ISP Outages: 30% of downtime
Threats
Storms
Fires
Power Outages
Hacktivists
DDoS
Cable damage
Router Failure
Backbone Failure
Business Disputes
Human Error

5. Traditional Solutions: Costly and Ineffective
Pitfalls
Add bandwidth to existing line
Expensive
No Redundancy
Bandwidth oversubscription
Add backup line to firewall / router
Limited failover and health checking
No inbound redundancy
Inefficient link utilization
Zero RoI unless backup links are used
BGP multi-homing with 2 ISPs
Expensive and complex routing
No Intelligent link routing
Long, unpredictable failover times
Needs special ASNs ($$) from ISPs
Lacking:
Automatic link monitoring
Intelligent traffic distribution
Application prioritization
They want to increase bandwidth as well as reliability without having to pay for expensive backup T1 lines and complex technology like BGP multi-homing.
Solution should intelligently balance the traffic on the links to avoid saturation of a single link, something they might have tried and failed to do by adding ISP links to their routers.

6. Solution: Barracuda Link Balancer
Provides Internet WAN and link balancing
Easily distribute traffic among multiple links to the Internet
Supports any combination of DSL, Cable, T1/T3, PPPoE and MPLS Networks
Plugs easily into existing network infrastructure
Supports up to 7 Internet links 6

7. Outbound Link Balancing
DNS
Corporate LAN
Barracuda Link Balancer
Internet
ERP, VOIP, Web,

8. Barracuda Link Balancer Main Features
Link Load Balancing
Intelligent load distribution across links from one or more ISPs
Multiple link load balancing algorithms to distribute traffic based on policies
Intelligent Link Monitoring and Failover/Failback
Continuously monitors link availability and performance using multiple criteria
Maintain traffic priorities by instantly rerouting traffic on link failure/saturation
High Availability
Ethernet Bypass and High Availability options
Traditional Firewall Functions
NAT, PAT, IP Access Lists, Port Forwarding, DHCP service

9. Differentiating Features
Inbound link load balancing using authoritative DNS
Domain services are served from multiple WAN links with link-specific IP
Failed links automatically removed from DNS tables
Application-aware bandwidth management across multiple links
Prevent abuse, optimize bandwidth
QoS policies by multiple categories
VPN failover and failback
VPNs fail over to available links and maintain traffic priorities
Automatic MPLS to VPN failback
Transparent “Drop-in” deployment mode
“Plug and Play” without changes to firewalls, VPNs, hosts and gateways
For example, VoIP and ERP traffic can be reserved for fast MPLS lines, while is shunted to slower T1 links

10. Inbound Link Balancing using ADNS
Comcast
WAN1
IP1
Verizon
WAN2
IP3
AT&T
WAN3
IP2
IP2
DNS
IP1
IP1
IP3
IP2
Barracuda Link Balancer
ERP, VOIP, Web, Services
IP3
Internet
Note to presenter:
Just click the slide once for the animation to play out.
Then talk through how the link balancer uses DNS to achieve inbound link balancing for all your services – , Web, VOIP, etc
Built-in Authoritative DNS module splits incoming load across links. Achieves inbound link load balancing as well as failover.
Ensures 24x7 services uptime

11. ROI: Replacing T1 with 2 x DSL
Original – 2 x T1
Cost 2 x $500 = $1000/mo
Bandwidth = 3 Mbps
Replace 1 x T1 with 2 x DSL (6 Mbps each)
DSL Cost = $75/mo for 6Mb
Total Cost = $ x $75 = $650/mo
Retain 1 x T1 for website & site-to-site
Save ~$350 per-month!
$$ Payback Period: 6 – 12 months
Barracuda Link Balancer
DSL T1 T1
Approx 200 users in Branch office
Pair of bonded T1’s (3Mb/sec)
Links regularly saturated
No redundancy to Internet / HQ

12. Immediate Return on Investment

13. Barracuda Link Balancer Models
Feature / Model
230
330
430
Internet Link Connections
2 x GbE
3 x GbE
7 x GbE
Throughput
150 Mbps
300 Mbps
550 Mbps
Link Balancing 
Link Health Checking
Link Failover
Network Traffic Firewall
Local DHCP and DNS
SNMP
Site-to-Site VPN
Bandwidth Management and QoS
Ethernet Bypass / HA
Live and Historical Reporting
Product Page:

14. Why Barracuda? Mature link load balancer
Easy-to-use, comprehensive feature set
Flexible deployment options
Customer support Excellence Award (SC Magazine, 2013 and 2014)
Thousand of satisfied customers worldwide

15. Benefits Summary No need to replace/reconfigure existing firewall
No longer hostage to an ISP
Guaranteed availability without delays or misrouting
Aggregate inexpensive links
Granular control for link optimization
Support for DSL, Cable, T1/T3 and MPLS
High availability of services across multiple WANs

16. Cost-Effective Network Performance and Availability
Moving Forward
Talk to us
Ask for a demo
Free 30-day evaluation
Cost-Effective Network Performance and Availability