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IPv4 IS-IS Configuration
You can build an IPv4 IS-IS network to allow IS-IS to discover and calculate routes in an autonomous system (AS).
- Overview of IS-IS
- Understanding IS-IS
- Summary of IPv4 IS-IS Configuration Tasks
- Licensing Requirements and Limitations for IPv4 IS-IS
- Default Settings for IPv4 IS-IS
- Configuring Basic IS-IS Functions
- Improving IS-IS Network Security
On an IS-IS network that requires high security, configure IS-IS authentication to improve IS-IS network security. - Controlling IS-IS Route Selection
- Controlling IS-IS Route Exchange
- Configuring IS-IS Route Summarization
A large IS-IS network has a large number of routing entries. This will slow down routing table lookup and increase management complexity. You can configure route summarization to reduce the size of routing tables. - Controlling IS-IS Route Convergence
Accelerating IS-IS route convergence can improve the fault location efficiency and improve network reliability. - Configuring LSP Fragment Extension
LSP fragment extension allows an IS-IS device to generate more LSP fragments to transmit more IS-IS information. - Configuring a Mesh Group on an NBMA Network
You can configure a mesh group on an NBMA network to prevent repeated LSP flooding from causing bandwidth waste. - Configuring IS-IS Reliability
- Configuring the Overload Bit for an IS-IS Device
If an IS-IS device needs to be temporarily isolated, configure the IS-IS device to enter the overload state to prevent other devices from forwarding traffic to this IS-IS device and prevent routing black hole. - Configuring IS-IS Neighbor Relationship Flapping Suppression
IS-IS neighbor relationship flapping suppression works by delaying IS-IS neighbor relationship reestablishment or setting the link cost to the maximum value. - Maintaining IS-IS
- Configuration Examples for IPv4 IS-IS
- Troubleshooting IS-IS
- FAQ About IS-IS