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A host name is easier to remember than a system ID. After enabling this feature on the router, you can see
the host names instead of system IDs using the display command.
BFD
Bidirectional forwarding detection (BFD) provides a single mechanism to quickly detect any link failures
between IS-IS neighbors to reduce network convergence time. For more information about BFD, see High
Availability Configuration Guide.
Protocols and standards
• ISO 10589 ISO IS-IS Routing Protocol
• ISO 9542 ES-IS Routing Protocol
• ISO 8348/Ad2 Network Services Access Points
• RFC 1195 , Use of OSI IS-IS for Routing in TCP/IP and Dual Environments
• RFC 2763, Dynamic Hostname Exchange Mechanism for IS-IS
• RFC 2966, Domain-wide Prefix Distribution with Two-Level IS-IS
• RFC 3277, IS-IS Transient Blackhole Avoidance
• RFC 3358, Optional Checksums in ISIS
• RFC 3373, Three-Way Handshake for IS-IS Point-to-Point Adjacencies
• RFC 3567, Intermediate System to Intermediate System (IS-IS) Cryptographic Authentication
• RFC 3719, Recommendations for Interoperable Networks using IS-IS
• RFC 3786, Extending the Number of IS-IS LSP Fragments Beyond the 256 Limit
• RFC 3787, Recommendations for Interoperable IP Networks using IS-IS
• RFC 3784, IS-IS extensions for Traffic Engineering
• RFC 3847, Restart signaling for IS-IS
IS-IS configuration task list
Task Remarks
Configuring IS-IS
basic functions
Enabling IS-IS Required
Configuring the IS level and circuit level Required
Configuring the network type of an interface as P2P Required
Configuring IS-IS
routing information
control
Configuring IS-IS link cost Optional
Specifying a priority for IS-IS Required
Configuring the maximum number of ECMP routes Optional
Configuring IS-IS route summarization Optional
Advertising a default route Optional
Configuring IS-IS route redistribution Optional
Configuring IS-IS route filtering Optional
Configuring IS-IS route leaking Optional
Tuning and
Specifying intervals for sending IS-IS hello and CSNP packets Optional
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