webinar voip 2006
TRANSCRIPT
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Foundry Proprietary - Copyright 2006
Is Your Network Ready for VoIP?Gary Hemminger
Director, Product Marketing
Foundry [email protected]
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Is Your Network Ready for VoIP?
VoIP vs. Data in an IP world
VoIP Network Quality IssuesVoIP and Data Security
The Forgotten Factors
Power Management Environment Costs
Choosing Network and IP Telephony Vendors
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VoIP vs. Data in an IP World
In an IP network the default is to deliver the data in a best effort, net neutralmanner, independent of content
This means that traffic with specific delivery requirements, like VoIP, may not be deliveredsuccessfully
It also means large volumes of data traffic could swamp voice traffic and increase latency& jitter to unacceptable levels for human speech
What are latency and jitter, and why are they important to VoIP traffic?
Latency refers to a delay in packet delivery
Jitter is the variation in the time between packet arrival Both are affected by network design, quality of service, queue arch.
In the world of IP, Data is not very sensitive to latency or jitter.
Instead, data is loss sensitive. Eg. File transfer likes error free communications
But VoIP traffic is very sensitive to latency & jitter
Human voice conversations require specific delay characteristics and small variations inpacket arrival times.
How do we guarantee VoIP traffic is delivered with low latency and jitter, withhigher priority that normal data traffic, to ensure high quality voice calls?
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Quality of ServiceGuaranteed VoIP Network Call Quality
VoIPTraffic
DataTraffic
Converged TrafficCall Manager
QoS network configurations insure that VoIP traffic is delivered with guaranteed quality
QoS takes advantage of high speed buffering and prioritization in the switches/routers
to deliver traffic at high, low, medium priority (with a variety of algorithms)QoS config uses priority bits in the L2 or L3 headers to signal priority
L2 standard is IEEE 802.1p, L3 is DSCP/ToS
Configuring this across the entire network can be very tricky & hard to validate
QoS guarantees VoIP call hashighest priority
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QoS Solution Provide AutomaticHonoring of L2/L3 QoS Priorities
Layer 3 QoS Support
PoE Stackable
PoE Chassis
Cisco Mitel Avaya Siemens Nortel Shoretel
Automatic honoring of 802.1p and DSCP
Eliminates manual configuration
Insures VoIP traffic gets high quality
Simple mapping mechanismsfor L2 to L3 QoS mapping andremarking
Layer 2QoS Support
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Embedded L2/L3 Switch Security Support
Network Switches, Routers, & Access Points
Call Manager
App & Web Servers
Radius, DNS, DHCP
Multiple endpointsIEEE 802.1x + MAC Authentication
AccessPolicy
DoS attack protectionCPU protectionRate limiting
Hardware-based ACLsDHCP, ARP, IP spoof protectionRogue AP detection & suppressionAccess policy enforcementThreat control enforcementEmbedded sFlow traffic monitoring
L2/3 Network Security Concerns-Denial of Service (DoS) attacks
-Spoof attacks-Rogue wireless Foundry Integrated Security
Features
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Solution Converged Network SecuritySolutions
Network Switches, Routers, & Access Points
Call Manager
App & Web Servers
Net Mgmt
Zero-Day Anomaly IDS Signature IDS
ThreatControl
Radius, DNS, DHCP
Multiple endpointsIEEE 802.1x + MAC Authentication
AccessPolicy
sFlow-based Anomaly + Signature Defense
ClosedLoop
Security
Open SourceApplications
sFlow
sFlow
Foundry IronShield Security: sFlow based security analysis Intrusion Prevention thru Snort Zero-day anomaly detection INM security policy manager
sFlow embedded in Foundryswitches and routers
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Forgotten IssuesPower Management
UPS
RPS Call Manager
Switch
MidspanPower Injector
Providing power for each phoneis costly both in labor and in the
backend power requirements
Midspan power injectors canprovide PoE, but are anotherfailure and mgmt point
These options are too costly, donot provide resiliency, and arehard to manage
Most PoE switches requireexternal power supplies toprovide redundancy in case ofpower supply failure
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Solution Integrated, Redundant,Hot-Swappable Power
Internal, redundant, hot-swappable AC and DC power
supplies eliminates need forexternal power devices andadditional managementelements
Power upgradeability can start
without PoE and easily add itwithout system impact
Support in bothstackable/chassis products
Automatic detection of legacypower and standard (802.3af)PoE devices makes IP handsetinstallation & configuration easy
Power Management designed
for converged switching
Internal, hot-swappable, load sharing power supplies(AC and DC)
Redundant PoE Powersupplies
Redundant SystemPower supplies
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Forgotten IssueEnvironmental Costs
Foundry SX1600 Other Vendor
Similar configurations-384 ports of 10/100/1000 PoE-2 ports of 10 Gig-Redundant Power-Redundant Mgmt Modules-List Price
Comparison based on data found on public web sites
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Forgotten IssueEnvironmental Costs
Approx. $60,000 savings over 5 yearsand this is just for a single switch!
Comparison based on data found on public web sitesPage 12 / 14
Environmental Factors Costs
-
20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
Year1 Year2 Year3 Year4 Year5
US$
Cisco 6509
Foundry SX1600
Other Vendor
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Choosing Network and IP Telephony Vendors
Do you go best-of-breed or single source?
Best-of-breed strategy provides flexibility for future network and
VoIP changes & keeps costs in check
Choosing the network and VoIP vendor separately insures youhave the best solution for your environment
Single source means higher costs
Vendor network and VoIP equipment is highly interoperable now
Foundry has reference accounts with Cisco, Nortel, Avaya, Mitel,Shoretel, Siemens, Sphere, Lucent, and others
Dont forget the Forgotten Factors (Power & Environmentals)
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Foundrys Open Voice Over IP SolutionsSupporting Industrys Best-of-Breed IP Telephony Solutions
BigIron RX BackboneBigIron RX Backbone
AvayaDevConnect
Premier
Member
MitelSolutions
Partner
NortelIPTelephonySolutions
CiscoIPTelephonySolutions
SiemensHiPathPartner
ShoretelSolutionsPartner
FastIron X424-POEFastIron SuperX
with POE
SX 800 and SX 1600With POE
FastIronGS624P/GS648P
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DISCLAIMER
Although Foundry has attempted to use accurate
information, Foundry assumes no responsibility for theaccuracy of the information or any use thereof. Theinformation is provided as is and Foundry disclaimsany warranty of any kind.
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