Features

Some of the major IS-IS features supported by the router include:

• Optimization of route leaking from level 1 to level 2
• Equal-cost paths maximum 16 equal paths
• Adjacency and LSP overrun
• Dynamic resolution of hostnames to system IDs
• Mesh groups
• Configurable LSP transmit and throttle intervals
• Route redistribution policies based on access lists between IS-IS levels
• Three-way handshake for point-to-point adjacencies
• Simple text and HMAC MD5 authentication
• Support for bigger metric TLVs
• Domain-wide prefix distribution
• Traffic engineering for MPLS
• 32-bit (4-octet) route tags
• Table maps
• Graceful restart
• IPv6 routing