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Update fabric related CLI in HLD #1656

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Merged
arlakshm merged 4 commits into from
May 17, 2024
Merged

Update fabric related CLI in HLD #1656

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db15894
Update fabric related CLI in HLD
jfeng-arista Apr 6, 2024
eb2c7fa
update the CLI
jfeng-arista Apr 6, 2024
c3aaeec
Update "show fabric counters rate" command
jfeng-arista May 6, 2024
4cd4c34
Merge branch 'master' into master-fabric-hld-udpate
jfeng-arista May 6, 2024
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38 changes: 28 additions & 10 deletions doc/voq/fabric.md
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
| 3.1 | Mar-30 2023 | Jie Feng (Arista Networks) | Update Overview, SAI API and Configuration and management section |
| 3.2 | May-01 2023 | Jie Feng (Arista Networks) | Update Counter tables information |
| 3.3 | Oct-31 2023 | Jie Feng (Arista Networks) | Update clear fabric counter commands |
| 3.4 | May-05 2024 | Jie Feng (Arista Networks) | Update CLI |

# Scope

Expand Down Expand Up @@ -250,17 +251,35 @@ The above command sets the number of consecutive polls in which no error is dete
> config fabric port unisolate [port_id]
```

Besides the fabric link monitoring algorithm, the above two commands are added. The commands can be used to manually isolate and unisolate a fabric link ( i.e. take the link out of service and put the link back into service ). The two commands can help us debug on the system as well as force isolate a fabric link.

```
> config fabric port unisolate [port_id] --force
```

Besides the fabric link monitoring algorithm, the above two commands are added. The commands can be used to manually isolate and unisolate a fabric link ( i.e. take the link out of service and put the link back into service ). The two commands can help us debug on the system as well as a force option to unisolate a fabric link.


An additional show command is also added to show the fabric link isolation status of a system.

```
> show fabric isolation
asic0
Local Link Auto Isolated Manual Isolated Isolated
------------ --------------- ----------------- ----------
0 0 1 1
1 0 0 0
2 1 0 1
....
```

### 2.8.2 Monitor Fabric Capacity

When the fabric link monitoring feature is enabled, fabric links may not be operational in a system due to link down, or link isolation by the monitoring algorithm. As a result, the effective capacity of total fabric links may be less than required bandwidth, and lead to performance degradation. Implementing a capacity monitoring algorithm in Orchagent will be useful to alert capacity changes. This feature is for forwarding ASICs on Linecards.

#### 2.8.2.1 Cli command

```
> config fabric monitor capacity threshold <50-100>
> config fabric monitor capacity threshold <5-100>
```
The above command is used to configure a capacity threshold to trigger alerts when total fabric link capacity goes below it.

Expand Down Expand Up @@ -291,15 +310,14 @@ Monitoring traffic on fabric links is another important tool to diagnose fabric
The following proposed CLI is used to show the traffic among fabric links on both fabric ASICs and forwarding ASICs.

```
> show fabric counters rate mbps
> show fabric counters rate

Asic Link RX TX
ID
–------ ----- --------- ----------
0 1 0 36113
....
0 19 0 36107
0 20 0 36110
ASIC Link ID Rx Data Mbps Tx Data Mbps
------ --------- -------------- --------------
asic0 0 0 19.8
asic0 1 0 19.8
asic0 2 0 39.8
asic0 3 0 39.8
....
```

Expand Down