Release Notes for SONiC on Cisco 8000 Series Routers, Release 202405cz.2.3.0
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SONiC on Cisco 8000 Series Routers, Release 202405cz.2.3.0.. 3
SONiC on Cisco 8000 Series Routers, Release 202405cz.2.3.0
Cisco SONiC Release 202405cz.2.3.0 introduces support for Support for IPv6 Virtual Tunnel End Point, Upstream Validation Support for VXLAN EVPN with Multi-Host, and Upstream Validation for Artificial Intelligence and Machine Learning Feature Set. This release enhances the SONiC platform on Cisco 8000 Series routers by improving software reliability and API integration.
New software features
Table 1. SONiC on Cisco 8000 Series Routers, Release 202405cz.2.3.0
| Product impact |
Feature |
| Upgrade |
Support for IPv6 Virtual Tunnel End Point |
| Upgrade |
EVPN-VxLAN: IPv6 underlay |
| Upgrade |
EVPN-VXLAN: Enhanced IPv6 Tunnel Support |
| Upgrade |
EVPN-VXLAN: Support for VxLAN Tunnel IPv4 and IPv6 |
| Software Reliability |
Enhanced DHCP Relay Scalability |
| Upgrade |
Support for Nvidia SuperNIC SPC-X Capability Through SuperNIC Handshake Integration |
| Upgrade |
Capability Negotiation Enhancement via Link Layer Discovery Protocol |
| Upgrade |
Support for Interface Dampening and Debounce Timer in SONiC |
| Upgrade |
Support for SONiC Ansible Facts Module |
| Upgrade |
Memory Trend Monitoring and High CPU Syslog Detection in SONiC |
| Upgrade |
OpenConfig gNMI Support for Management Information Bases |
| Upgrade |
Enhanced Manageability for OC System and Platform Models |
| Upgrade |
Multi-Homing Express Reboot Support Enhancements |
New hardware
There is no new hardware introduced in this release.
Changes in behavior
There are no changes in behavior in this release.
Resolved issues
Table 2. Resolved issues for SONiC on Cisco 8000 Series Routers, Release 202405cz.2.3.0
| Bug ID |
Description |
| DHCP packets dropped due to UDP checksum is empty. |
|
| L2 traffic not passing across fabric links between leaf switches |
|
| Traffic forwarding issues after adding static route in two switches single-homed. |
|
| Communitation lost from external network to host due to MAC sync issues after host IP address change |
|
| Hyperfabric Transceiver Linkup Fails |
|
| Fans in exhaust configuration, reporting problem with speeds, PWM and RPMs. |
|
| Local neighbor is not restored after an overlay EVPN/BGP /32 that suppressed it is withdrawn |
|
| Optics Not Detected On Hyperfabric HF6100-32D |
Open issues
Table 3. Open issues for SONiC on Cisco 8000 Series Routers, Release 202405cz.2.3.0
| Bug ID |
Description |
| Port using QSFP-40/100-SRBD in 100G mode is not coming up after image upgrade to 20260607 |
|
| Port using QSFP-100G-CUXM is not coming up between HF6100-32D and non-Hyperfabric platforms |
Known issues
Table 4. Known issues for SONiC on Cisco 8000 Series Routers, Release 202405cz.2.3.0
| Known Issues |
Description |
| Express Reboot and Log Rotation Timer Coincidence |
In an intermittent timing condition where the log rotation timer expiry exactly coincides with the Express Reboot process, the dockers may perform a cold reboot instead of an express reboot. To prevent this, restart the log rotation timer before the Express Reboot command is triggered. |
| Intermittent Traffic Loss During Express Reboot |
During express reboot, in rare scenarios, a few traffic streams may experience a loss of more than one second. This occurs just after node boots up after express reboot. The system automatically recovers these flows within a few seconds without requiring manual intervention. |
| Missing MAC in Dataplane During Route Churn |
During an intermittent condition with significant route churn, a MAC address may be present in the control plane but missing in the dataplane, causing L2 traffic to be handled as BUM traffic instead of unicast. To resolve this, execute the command vtysh -c "clear bgp l2vpn evpn <neighbor address>". |
Compatibility
This table outlines the versions of various components included in this release.
Table 5. Component version for SONiC on Cisco 8000 Series Routers, Release 202405cz.2.3.0
| Component |
Version |
| Linux Kernel |
6.1.0-11-2-amd64 |
| SAI API |
1.14.0 |
| FRR |
8.5.4 |
| LLDP |
1.0.16-1+deb12u1 |
| TeamD |
1.31-1 |
| SNMPD |
5.9.3+dfsg-2 |
| Python |
3.11.2-1+b1 |
| SYNCD |
1.0.0 |
| swss |
1.0.0 |
| Radvd |
1:2.19-1+b1 |
| ISC-DHCP |
4.4.3-P1-2 |
| sonic-gnmi version |
0.1 |
| redis-server |
5:7.0.15-1~deb12u4 |
| redis-tools version |
5:7.0.15-1~deb12u4 |
| eventd version |
|
| mgmt-framework version |
|
Supported hardware
Table of supported hardware components and the minimum required software versions.
Table 6. Supported hardware for SONiC on Cisco 8000 Series Routers, Release 202405cz.2.3.0
| Part Number |
Description |
| 8102-64H-O |
Cisco 8100 2 RU Chassis with 64x100G QSFP28 with Open Software and without HBM on Q200 Silicon. |
Related resources
Table 7. Related resources
| Resource |
Description |
| Provides documentation for installing and deploying SONiC on Cisco 8000 Series Routers.
|
|
| Introduces use-case-based documentation for SONiC through Learning Labs, offering guidance on use cases and configurations to facilitate deployment. Additionally, it enables experimentation and customization to meet specific network requirements. |
|
| Provides guidance on installing a new SONiC image on Cisco 8000 series routers, covering two installation methods: Open Network Install Environment (ONIE) and the sonic-installer command. |
|
| Provides detailed specifications and feature information for Cisco 8000 Series Routers in the Data Sheet. |
|
| Provides SONiC image download options for Cisco 8000 Series Routers. |
|
| Provides documentation for installing and deploying SONiC on Cisco 8000 Series Routers.
|
|
| Introduces use-case-based documentation for SONiC through Learning Labs, offering guidance on use cases and configurations to facilitate deployment. Additionally, it enables experimentation and customization to meet specific network requirements. |
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