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Is Is Routing Protocol
Is Is Routing Protocol
Is Is Routing Protocol
Is Is Routing Protocol
Is Is Routing Protocol
Is Is Routing Protocol
Is Is Routing Protocol
Is Is Routing Protocol
Is Is Routing Protocol
Is Is Routing Protocol
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Is Is Routing Protocol

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  • 1. By SHUBHAM SAHRMA FINAL YEAR(CS) [email_address]
  • 2. IGP –&gt; IS-IS <ul><li>Distance Vector IGP’s </li></ul><ul><ul><li>RIP </li></ul></ul><ul><ul><li>RIP2 </li></ul></ul><ul><ul><li>IGRP </li></ul></ul><ul><ul><li>EIGRP </li></ul></ul><ul><li>Link State IGP’s </li></ul><ul><ul><li>OSPF </li></ul></ul><ul><ul><li>IS/IS </li></ul></ul>
  • 3. CAN’T WORK ACROSS AUTONOMOUS SYSTEM <ul><li>An autonomous system can be defined as group of router under the same administrative control. </li></ul><ul><li>Protocols like BGP can work across the autonomous system basically called as EGP(Exterior Gateway Protocol). </li></ul>
  • 4. IGP – IS/IS <ul><li>OSI Developed </li></ul><ul><li>In the magic OSI fantasy world everything is either an End System (ES) or an Intermediate System (IS.) </li></ul><ul><li>ES=Hosts </li></ul><ul><li>IS=Routers </li></ul><ul><li>IS/IS: A protocol to let Intermediate Systems talk to other Intermediate Systems. IE: Router to Router. IE: Routing </li></ul>
  • 5. <ul><li>Link state routing Protocol </li></ul><ul><li>Is-Is build a topological representation of network </li></ul><ul><li>Supports the larger network </li></ul><ul><li>Inter area router </li></ul><ul><li>Intra area router </li></ul><ul><li>It does not use the backbone area </li></ul>
  • 6. COMPARISON WITH OSPF <ul><li>Ospf network types </li></ul><ul><li>Point to point </li></ul><ul><li>Broadcast network </li></ul><ul><li>NBMA </li></ul>
  • 7. IS-IS NETWORK
  • 8. IGP – IS/IS <ul><li>It is also VERY easy to modify to carry other protocols, like IPv4 and IPv6. </li></ul><ul><li>The language is different, but the concepts are the same as in OSPF (Well, not really, but close enough.) </li></ul><ul><li>OSPF Areas=IS/IS Levels </li></ul><ul><li>OSPF Neighbors=IS/IS Adjacencies </li></ul>
  • 9. IGP – IS/IS <ul><li>Always use Wide Metrics. </li></ul><ul><li>Always set your metrics. </li></ul><ul><li>Always disable Level 1 and force Level 2. </li></ul><ul><li>OSI MTU must be &lt;= 1500. </li></ul><ul><li>You need one Unique OSI address per router. </li></ul>
  • 10. <ul><li>Questions? </li></ul>

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