O'Reilly logo

IS-IS Network Design Solutions by Scott Sturgess, Abe Martey

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

IS-IS Packet Fields (Alphabetical Order)

  • ATT— Attachment Bits (Flags attachment to other areas)

  • Checksum— Checksum of contents of LSP from source ID field to the end

  • Circuit Type— Defines whether link is Level-1 and Level-2

  • End LSP— LSP ID of last LSP in CSNP

  • Holding Time— Defines how long to wait for a hello from this system before clearing the adjacency

  • ID Length— Length of the System ID field in an NSAP(NET)

  • Intradomain Routing Protocol Discriminator— Network layer protocol identifier

  • IS Type— Defines type of router, Level-1 or Level-2

  • LAN ID— LAN Identifier, Consists of the System ID of the designated intermediate system plus a unique number

  • Length Indicator— Length of the fixed header of the packet in bytes

  • Local Circuit ID— Unique identifier for ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required