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ISIS Features

• Supports both Level 1 and Level 2 routing
• Supports IP only environments
• Supports Passive Circuits
• Supports Multiple Instances
• Supports PPP, Ethernet, ATM, and FR at the Data Link layers
• Provides support for all four routing metrics based on configuration
• Provides support for authentication at Link, Area, and Domain levels Authentication can be dynamically enabled or disabled either in Transmit and/or Receive direction.
• Implements Smart Buddy memory management for managing variable length buffers, which reduces memory fragmentation
• Supports Equal Cost Multi-Path for all the four routing metrics
• Implements Lazy-SPF. The rate at which the SPF is scheduled is configurable
• Provides support for IP Reachable addresses
• Implements an efficient mechanism for timers thereby reducing the total number of timers required by the protocol
• Provides support for dynamically enabling and disabling of Log messages
• Endian Neutral and Re-entrant code
• Provides support for Fault Tolerance via hooks to external Redundancy Manager
• Provides hooks for Distributed environments
• Completely configurable through SNMP and CLI
• Supports MIB Draft-8
• Highly portable code that uses flexible buffer and timer management libraries

Last updated : June 14, 2006