272781855e
- Why I did it Current mutli-asic vs hwsku consists of 6 asics with each asic having 32 interfaces. When bringing this up, below issue was seen: When all 32 interfaces(sonic interfaces and linux interface) are set to 9100 mtu, DMA error is seen "DMA: Out of SW-IOMMU space for 4096 bytes at device 0000:06:03.0" which can be fixed by updating swiotlb=65536 in /host/grub/grub.cfg .In order to keep multi-asic VS lighter and easier to bring up and test, new hwsku 'msft_four_asic_vs' is added to represent 4-asic hwsku with 2 frontend asics and 2 backend asics and each asic having 8 interfaces interconnected by port-channels. - How I did it Add msft_four_asic_hwsku directory to have the right number of directories (4) and update port_config.ini and lanemap.ini files to include 8 ports information. Add topology.sh script to create the internal asic-asic connectivity. - How to verify it Update asic.conf with the 4 asic information as below and build sonic-vs.img: NUM_ASIC=4 DEV_ID_ASIC_0=0 DEV_ID_ASIC_1=1 DEV_ID_ASIC_2=2 DEV_ID_ASIC_3=3 Modify sonic_multiasic.xml to have 8 front panel interfaces. create virtual switch using "sudo virsh sonic_mutliasic.xml" command. Start topology service and Load config_db files for switch and each asic. Ensure that that all internal interfaces and port_channels are coming up. multi-asic vs testbed: Bring up mutli-asic VS testbed with a multi-asic image(asic.conf updated to 4 asics) and using t1-lag topology. ./testbed-cli.sh -t vtestbed.csv -m veos_vtb -k ceos add-topo vms-kvm-four-asic-t1-lag password.txt Load minigraph/config_dbs. Ensure all internal and external interfaces come up. No change on single asic vs. |
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| .. | ||
| msft_four_asic_vs | ||
| msft_multi_asic_vs | ||
| plugins | ||
| asic.conf | ||
| default_sku | ||
| installer.conf | ||
| pmon_daemon_control.json | ||