- Switch model name:
- Edgecore SONiC version:
- Port breakout fails if portchannel exists. Please remove portchannel before doing breakout.
- After doing breakout, MTU size of the first interface will be disappeared. Doing config reload after save the configuration will correct the MTU.
- After SONiC.Edgecore-SONiC_20200827_110345_ec201911_2020-aug_enhanced_178 version, dynamic port breakout fails after using default configuration file generated by sonic-cfggen and restore.sh.
- After port breakout, the admin status on port will be down.
Example : Dynamic Port Breakout
Step 1. Check IP interface and portchannel status before doing port breakout. In this example, we may take Ethernet48 to be a breakout port.
Caution: IP address has to be removed from physical interface and VLAN interface. This port has also to be removed from Vlan member. It's now allowed to do port breakout if the switch has portchannel setting.
Since there is IP address on physical interface "Ethernet48", we have to remove IP address from it.
Since there is IP address on "Vlan100" interface, we have to remove IP address from it. Don't forget to delete this port from Vlan member. In this Vlan example, remove Ethernet52 from Vlan100.
Delete ALL portchannel. This is known issue that portchannel existence may let breakout fail.
Step 2. Check breakout option availability and current breakout mode.
Step 3. Configure dynamic port breakout
Step 4. Show breakout current mode status and interface status
Since there's a known issue about the MTU, the MTU is "N/A".
Step 5. Save configuration to startup configuration. Please do config reload to get first MTU corrected (Step 4).
Step 6. Undo breakout port.
Step 7. Show current breakout mode and interface status.
Since there's a known issue about the MTU, the MTU is "N/A"
Please do config reload to get first MTU corrected.