Why I did it
To improve FAST reboot dataplane downtime
Work item tracking
N/A
How I did it
Updated SAI xml config file
How to verify it
Run sonic-mgmt tests of fastboot
BACKPORT: #16781
Why I did it
To enable Store-And-Forward switching mode for SN2700/SN3800/SN4600C/SN4700
Work item tracking
N/A
How I did it
Added vendor SAI config options
How to verify it
make configure PLATFORM=mellanox
make target/sonic-mellanox.bin
#### Why I did it
To add new SKU Mellanox-SN4700-O8C48 with following requirements:
| Port configuration | Value |
| ------ |--------- |
| Breakout mode for each port |**Defined in port mapping** |
| Speed of the port | **Defined in Port mapping** |
| Auto-negotiation enable/disable | **No setting required** |
| FEC mode | **No setting required** |
|Type of transceiver used | **Not needed**|
Buffer configuration | Value
------ |---------
Shared headroom | **Enabled**
Shared headroom pool factor | **2**
Dynamic Buffer | **Disable**
In static buffer scenario how many uplinks and downlinks? | **48x100G Downlinks and 8x400G uplinks**
2km cable support required? | **Yes**
Switch configuration | Value
------ |---------
Warmboot enabled? | **yes**
Should warmboot be added to SAI profile when enabled? | **yes**
Is VxLAN source port range set? | **No**
Should Vxlan source port range be added to SAI profile when set. | **No**
Is Static Policy Based Hashing enabled? | **No**
Port Mapping
| Ports | Mode |
| ------ |--------- |
| 1-12 | 2x100G |
| 13-20 | 1x400G |
| 21-32 | 2x100G |
Number of Uplinks / Downlinks:
T1 topology: **48x100G Downlinks 8x400G uplinks**.
Length of downlink: **40m**
Length of uplink: **2000m**
##### Work item tracking
- Microsoft ADO **(number only)**:
#### How I did it
Defined the SKU as per requirements
#### How to verify it
Load the SKU and verify if all links come up and traffic passes.
#### A picture of a cute animal (not mandatory but encouraged)
