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10 fn s47

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    10 fn s47 10 fn s47 Presentation Transcript

    • Packet Design Easing the IPv4-to-IPv6 Transition with Route Analytics Alex Henthorn-Iwane Vice-President, Product Marketing alex@packetdesign.com
    • Complex IP Network Behavior is Packet Design Unpredictable and Difficult to Manage As Applications and Services Grow More Critical • More sensitive applications • Less tolerance for How Do You Know: • Which part of the network is carrying the application traffic? • If the network is causing a problem? • Where in the network to troubleshoot? • How to accurately plan the network? Networks Become More Redundant: • Provide greater fault tolerance • But also make it very difficult to understand which routers are delivering application or service traffic at any time Harnessing the Intelligence of IP Nov 2006 1
    • Logical vs. Device-Specific Packet Design Causes of Application Degradation  Survey of 188 IT Professionals  Question: % of application degradations are caused by logical vs. device-specific issues?  Answer: 42% answered that at least half of the time, logical network issues were the root cause – Application Delivery Handbook, 2009 Harnessing the Intelligence of IP Nov 2006 2
    • Why Existing Network Management Packet Design Technologies Aren’t Sufficient Service Monitoring: • Only looks at the end points • Doesn’t understand the network SNMP Network Management: • Only understands device status • Doesn’t see how devices work together • Doesn’t understand routing Harnessing the Intelligence of IP Nov 2006 3
    • If IPv4 Networks are Challenging, Packet Design IPv6 Migration Make Them More So  Most networks won’t cut over to pure IPv6 There are important engineering questions that are difficult to answer on an ongoing basis:  Do the right routers and links have IPv6 routing enabled?  Are the right prefixes being advertised where they are intended to be?  Are IPv6 paths functioning as expected?  Is path redundancy is set up properly? Harnessing the Intelligence of IP Nov 2006 4
    • Route Analytics Technology Packet Design • Peers with and listens passively to routing Route Analytics protocols to learn their view AS 3 (EIGRP) of the network BGP • Creates 100% accurate model of the actual routed topology • Records complete routing BGP AS 1 (OSPF) event history • Understands all application traffic AS 2 (IS-IS) paths at all times • Capable of IGP Routing Adjacencies modeling network changes BGP Route Peerings Harnessing the Intelligence of IP Nov 2006 5
    • IGP Routing Analytics Packet Design  Establish adjacency with one router in each Area  Records every single routing update  Creates real-time network map • Created from routing data as up to date as routing in the network  Precise understanding of traffic paths • Paths are computed using the same procedures as routers, but on a network-wide basis Harnessing the Intelligence of IP Nov 2006 6
    • BGP Route Analytics Packet Design  Set up peerings with full I-BGP mesh • Works as Route Reflector client • Part of an RR Cluster • Or a combination • Works with BGP Confederations  Routing table visualization  Per BGP attribute routing table breakdown and visualization  Before and After analysis can highlight what is different between a known state of the network and the state in question • This was the feature used in detecting the customer that injected the extra routes  Root cause analysis can process 100,000s of BGP message to determine the cause of these events Harnessing the Intelligence of IP Nov 2006 7
    • Integrated IGP and BGP Network Map Packet Design All Routers and Links  Orange and magenta are different OSPF areas  Lines are routing adjacencies  Blue are BGP speakers  Red elements are down Path Tracing  Yellow is a forward path between two routers, green is the reverse Harnessing the Intelligence of IP Nov 2006 8
    • How Route Analytics Aids IPv6 Transition: Packet Design Network-Wide Visualization and Analysis  Engineers can see IPv4 and IPv6 routing topologies • Can display just IPv4 or IPv6 routing topology • Visual validation of expected network state  Trace precise v4 or v6 paths • Select source router and destination prefix • Route analytics shows which path will be taken through network  Network-wide prefix inventory • Ensure that v6 address blocks are allocated to the right routers Harnessing the Intelligence of IP Nov 2006 9
    • Dual-Stack IPv4/IPv6 Network Packet Design As Visualized by Route Analytics Harnessing the Intelligence of IP Packet Design, Inc. Nov 2006 10 Proprietary and Confidential
    • Real-Time Routing Details Recorded Packet Design by Route Analytics Harnessing the Intelligence of IP Packet Design, Inc. Nov 2006 11 Proprietary and Confidential
    • Drill-Down Routing Details Packet Design Harnessing the Intelligence of IP Nov 2006 12
    • Packet Design Harnessing the Intelligence of IP Packet Design, Inc. Nov 2006 13 Proprietary and Confidential
    • How Route Analytics Aids IPv6 Transition: Packet Design Re-windable Routing History  Route analytics records all routing events and changes, and stores it as a rewindable history  Engineers can rewind to a particular point in time and view the precise state of the network at that time • Before and after analysis between two points in time shows exactly what changed in routing when a network problem was occurring  All other tools available in the real-time view can be used in historical mode • Visualization • Path tracing • Prefix inventory Harnessing the Intelligence of IP Nov 2006 14
    • How Route Analytics Aids IPv6 Transition: Packet Design More Accurate Change Processes  Route analytics can model routing changes • Enabling a new IPv6 router • Adding new IPv6 prefixes • Adding new links • Downing routers or links for maintenance or to anticipate a possible disaster recovery failure scenario • Moving prefixes from one router to another  Simulate network-wide behavior that would result • Model a change and trace a critical service path to ensure that service would not be impacted  “Freeze time” and observe real-time changes • Routing summary snapshot can be “frozen” and viewed in parallel with real-time update during change window Harnessing the Intelligence of IP Nov 2006 15
    • Who’s Using Route Analytics? Packet Design  Hundreds of global organizations across many industry verticals • SPs, Mobile Operators, Cable MSOs • Fiserv, Energy, Utility, Pharma, Healthcare, Manufacturing, Retail, Media/Entertainment, etc. • Local, Municipal, State, Federal Govt, Military Agencies, Education  Dual-Stack IPv4/IPv6 Route Analytics • Major carrier, ISPs in Japan • European SPs • U.S. Military/Defense agencies Harnessing the Intelligence of IP Nov 2006 16