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Nairobi, Kenya, 30 – 31 July 2010
Interoperability Challenges in ISPs’ Operations
Tamer M. Kamel,Networks Operation & Maintenance
Division, TE-DATAEgypt Manager
Regional ITU Consultation on Conformance Assessment and
Interoperability for the Africa region (Nairobi, Kenya, 30-31 July 2010 )
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Agenda
TE Data @GlanceMulti-Vendor EnvironmentInteroperability ExperienceRecommendation
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TE Data @ Glance
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TE Data MarketMarket Leader as an internet provider and data communication solutions~ 1 million home customers with 60% market share ~ 2000 enterprise customers with advanced solutions with 50% of Egypt market share~ 100 Gbps of international bandwidth capacity with 70% of total internet capacity in Egypt
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TE Data Services
Basic ServicesADSL Broadband WiFi InternetInternet Dial-up L2/L3 MPLS VPNInter-AS VPN IP Transit
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TE Data Services (Cont.)
Value Added ServicesIPTV, VoDClean Internet Video Conferencing Domain NamesVirtual Call-Center for small businessIP-SurveillanceVirtual BranchingHosting Packages, Managed Data-center
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Multi-Vendor Environment
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Multi-Vendor Environment Benefits
Minimize CostReduce RiskEnrich ServicesFlexibility That Drives Innovation
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TE Data Multi-Vendor
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Core
Access
Data Center
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Interoperability Experience(Time Bomb)
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1. LACP (IEEE 802.3ad)
Failed to establish port bundle between DSLAM uplink (Vendor-A) and the access switch (Vendor-B) due to mismatch in LACP parameters.Impact:
End customers experience instabilityAdded operational cost and resourcesLoosing redundancy feature
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2. MTU (RFC-1191)
BRAS (Vendor-X) failed to establish subscriber sessions forwarded from MSAN (Vendor-Y); due to MTU mismatchImpact:
Extra Configuration and customizationAdded operational cost and resources
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3. SELT (ITU-T Study group 15)
Couldn't perform copper line inspection by an application (Vendor-A) due to limited functionality of some DSLAM platform in SNMP and SELT test (Vendor-B) DSLAMImpact:
No access to SELT servicesDifficulties in maintenance operations
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4. xDSL (ITU G992.x)
CPEs commit support of line-codes; while some are not functioning well Impact:
Extra configuration neededDifficulties in maintenance operations
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5. MAC Address (IEEE 802)
many CPE brands use non-unique and fake MAC address during encapsulating PPP frame; causing duplicate MAC at DSLAM side and session may be dropped.Impact:
Difficulties in maintenance operationsAdded cost to replace CPEs
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6. SNMP
ATM DSLAM (Vendor-X) not supporting the standard an complete MIB tree; causing poor discovery and management through the SNMP servers Impact:
Hard to provision and to operate through management serversAdded operational costs and resources
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Recommendations
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Recommendations
Operators should share their experience and knowledge regarding interoperability through standard bodies.ITU and Standard Bodies should make a program to enhance operator skills regarding standards in technology.
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Recommendations (cont.)
Local and international standard bodies help in establishing and accrediting regional LABs.Monthly Bulletin by local countries NTRA with vendors’ problems and actions
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Recommendations (cont.)
Hardware and software suppliers should mention the certificates of the products regarding the introduced features and its interoperability with other suppliers.
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THANK YOU
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