Support was added for the following features: The ispf startup-delay command was removed from the Setting SPF Interval for a Single-Topology IPv4 and IPv6 Configuration. See the MPLS Label Distribution Protocol IGP Synchronization and Configuring MPLS LDP IS-IS Synchronization for more information. LDP IGP synchronization support was added for IPv4 unicast address families.
CISCO IOS XR SOFTWARE
Implementing IS-IS on Cisco IOS XR Software Configuring IS-IS Overload Bit Avoidance: Example.Redistributing IS-IS Routes Between Multiple Instances: Example.Configuring Multitopology IS-IS for IPv6: Example.Configuring Single-Topology IS-IS for IPv6: Example.Configuration Examples for Implementing IS-IS.Configuring IS-IS Overload Bit Avoidance.Configuring IP Fast Reroute Loop-free Alternate.Setting the Priority for Adding Prefixes to the RIB.Configuring MPLS LDP IS-IS Synchronization.Setting SPF Interval for a Single-Topology IPv4 and IPv6 Configuration.Configuring MPLS Traffic Engineering for IS-IS.Configuring Nonstop Forwarding for IS-IS.Placing an Interface in a Topology in IS-IS.Configuring a Global Topology and Associating It with an Interface.Information About Multitopology Routing.Restrictions for Configuring Multitopology Routing.Enabling IS-IS and Configuring Level 1 or Level 2 Routing.Label Distribution Protocol IGP Auto-configuration.MPLS LDP-IGP Synchronization Compatibility with IGP Nonstop Forwarding.MPLS LDP-IGP Synchronization Compatibility with LDP Graceful Restart.MPLS Label Distribution Protocol IGP Synchronization.
Overload Bit Configuration During Multitopology Operation.