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Overview :
Aricent ISIS (Intermediate System to Intermediate System) software is an efficient and portable implementation of the OSI's ISO 10589 specifications. The implementation includes functionalities to provide IP extensions as specified by RFC 1195.
Figure 1. Aricent ISIS Architecture
RTM - Route Table Manager
FTM - Fault Tolerance Module
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 Level, Area Level and Domain Level. Authentication can be dynamically enabled or disabled either in Transmit or Receive direction or both.
- 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.
- MIB Draft-8 Support
- Conforms to Future Software Architecture for Portability (FSAP2), thus ensuring highly portable code that uses flexible buffer and timer management libraries.
Benefits :
Aricent ISIS reduces the time to market for OEMs and VARs who wish to incorporate the ISIS functionality into their routing devices.
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