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Update Static Port Channel Design Document.md
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skannan-sonic committed Aug 16, 2022
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|:---:|:-----------:|:------------------:|-----------------------------------|
| 0.1 | 10/31/2019 | Amitabha Sen | Initial version |
| 0.2 | 06/20/2022 | Kannan Selvaraj | Updated load-balance round-robin |
| | | | show command display as STATIC |
| | | | CONFIG_DB flag is changed from |
| | | | static to on |
| | | | show command display as NONE |

# About this Manual
This document provides details on achieving Static Port Channel functionality in SONiC.
Expand Down Expand Up @@ -136,10 +134,10 @@ A user should be able to create the Port Channel in static or dynamic mode. For
Note: Port Channels are dynamic by default in SONiC.

### 3.1.2 Team Manager
Team Manager listens to Port Channel update events from the PORTCHANNEL and PORTCHANNEL_MEMBER table in CONFIG_DB. For the Static Port Channel add event it starts Teamd with round-robin as the runner; whereas for the dynamic Port Channel Teammgr starts Teamd with lacp as the runner.
Team Manager listens to Port Channel update events from the PORTCHANNEL and PORTCHANNEL_MEMBER table in CONFIG_DB. For the Static Port Channel add event it starts Teamd with load-balance as the runner; whereas for the dynamic Port Channel Teammgr starts Teamd with lacp as the runner.

When static port-channel is configured then teammgr invokes teamd instance as follows
root 27 1 0 Jun17 ? 00:01:10 /usr/bin/teamd -r -t PortChannel0001 -c {"device":"PortChannel0001","hwaddr":"00:e0:ec:7a:88:11","runner":{"name":"roundrobin","min_ports":1}} -L /var/warmboot/teamd/ -g -d
root 27 1 0 Jun17 ? 00:01:10 /usr/bin/teamd -r -t PortChannel0001 -c {"device":"PortChannel0001","hwaddr":"00:e0:ec:7a:88:11","runner":{"name":"loadbalance","min_ports":1}} -L /var/warmboot/teamd/ -g -d

round-robin load-balancing is configured for the kernel interface port-channel.

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```
click CLI
1. config portchannel add PortChannel<number> --static=true
1. config portchannel add PortChannel<number> --on=true
Create a Static Port Channel.
```
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S - selected, D - deselected, * - not synced
No. Team Dev Protocol Ports
----- --------------- ------------- --------------
0001 PortChannel0001 STATIC(A)(Up) Ethernet112(S)
0002 PortChannel0002 STATIC(A)(Up) Ethernet116(S)
0003 PortChannel0003 STATIC(A)(Up) Ethernet120(S)
0001 PortChannel0001 NONE(A)(Up) Ethernet112(S)
0002 PortChannel0002 NONE(A)(Up) Ethernet116(S)
0003 PortChannel0003 NONE(A)(Up) Ethernet120(S)
```
### 3.6.4 Debug Commands
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