New and Changed Information
The following table provides an overview of the significant changes to the organization and features in this guide up to this current release. The table does not provide an exhaustive list of all changes made to the guide or of the new features up to this release.
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Feature or Change |
Description |
Where Documented |
|---|---|---|
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Border Gateway Route Server |
Enables the deployment of route servers between fabrics to optimize the BGP overlay control plane, reducing the number of required BGP sessions and minimizing the control-plane route scale footprint. |
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Aggregated BUM Storm Control on ACI Border Gateway |
You can configure aggregated BUM (Broadcast, Unknown Unicast, and Multicast) storm control on ACI border gateways using a node-level policy (BgwStormCtrlPol). This policy governs all DCI links on the border gateway node and overrides any existing interface-level storm control configurations on DCI ports. |
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SR MPLS switch is stamping TTL value of 32 in the MPLS encap packet |
The SR MPLS switch would stamp a fixed TTL (Time-to-Live) value of 32 in MPLS-encapsulated packets.This behavior has been updated in Release 6.2(2), the SR MPLS switch now preserves the original IP packet's TTL value and propagates it into the MPLS encapsulation. This change aligns the SR MPLS switch's behavior with standard MPLS TTL processing. |
MPLS TTL Handling in SR‑MPLS Handoff Create a SR-MPLS TTL Policy using the GUI Associate the Logical Node Profile with a SR-MPLS TTL Policy |
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BFD over BGP prefix |
This release adds Bidirectional Forwarding Detection (BFD) support for BGP prefix peers on ACI BGP L3Outs. With this enhancement, BFD can now be used with BGP prefix peers so that ACI can scale to environments with thousands of single‑hop eBGP hosts, while still providing rapid link and path failure detection. | Bidirectional Forwarding Detection |
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Feature or Change |
Description |
Where Documented |
|---|---|---|
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BGP Graceful Restart Helper mode |
The Graceful Restart Helper mode deletes all stale routes after a specified time period, which helps routers to maintain routing stability by retaining their forwarding state while the control plane is being restarted. Graceful Restart is crucial for maintaining network reliability and performance during maintenance activities. |
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Migrate multiple ACI fabrics with existing L3Out connectivity to an ACI border gateway |
Interconnect ACI sites using the ACI Border Gateway (BGW) path. This release also adds support for connectivity to VXLAN sites. If your environment already uses ACI multi-site inter connectivity with L3Out, you can migrate to the ACI border gateway interconnect. |
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