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Merge pull request sonic-net#300 from BRCM-SONIC/if_events
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Interface Down Reason
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@Prasanth-KV
Prasanth-KV authored Oct 20, 2021
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| 0.2 | 05/17/2021 | Madhukar K | Modified portchannel content |
| 0.3 | 06/22/2021 | Prasanth K V | Added REST details and DB schema |
| 0.4 | 06/28/2021 | Madhukar K | Added portchannel details |
| 0.5 | 10/18/2021 | Prasanth K V | Updates to REST and CLI output |

# About this Manual
This document provides comprehensive functional and design information about the *Interface Down Reason* feature implementation in SONiC.
Expand Down Expand Up @@ -102,6 +103,7 @@ So an interface flap affects the system in general and hence it is important to
- Incompatible transceiver
- Transceiver not present
- Port breakout in-progress
- Port breakout completed
- High BER
- PMD-CDR-lock
- PMD-signal-detected
Expand Down Expand Up @@ -195,19 +197,15 @@ For portchannels, a new field, reason, is been added to LAG_TABLE:
}
```

A new table is added for keeping track of the events IF_REASON_EVENT:
A new table IF_REASON_EVENT is added for keeping track of the events IF_REASON_EVENT:
```
"IF_REASON_EVENT": {
"Ethernet40": {
"reason": "OPER_UP",
"event": "PHY_link_up",
"timestamp": "2021-06-06 09:29:55.639018"
}
"PortChannel20": {
"reason": "OPER_UP",
"event": "Portchannel_up",
"timestamp": "2021-06-20 15:39:45.439412"
}
"IF_REASON_EVENT:Ethernet64:xcvr-status-up": {
"timestamp":"2021-06-18.10:08:13.948691",
"reason":"ERR_DISABLED"
}
"IF_REASON_EVENT:PortChannel20:portchannel-up": {
"timestamp":"2021-06-20 15:39:45.439412",
"reason":"OPER_UP"
}
```
### 3.2.3 STATE DB
Expand Down Expand Up @@ -242,19 +240,19 @@ Only existing show command outputs are updated.
#### Physical interface
- *show interface status*
A new column, "Reason", is been added in this command output. The high level reasons are
Admin-down
Err-disabled
Phy-link-down
Link-up
admin-down
err-disabled
phy-link-down
oper-up
```
sonic# show interface status
----------------------------------------------------------------------------------
Name Description Oper Reason Speed MTU Alternate Name
Name Description Oper Reason AutoNeg Speed MTU Alternate Name
----------------------------------------------------------------------------------
Eth1/1 - Down Admin-down 100000 9100 Ethernet0
Eth1/2/1 - Down Err-disabled 10000 9100 Ethernet4
Eth1/2/2 - Down PHY-link-down 10000 9100 Ethernet5
Eth1/2/3 - Up Link-up 10000 9100 Ethernet6
Eth1/1 - down admin-down off 100000 9100 Ethernet0
Eth1/2/1 - down err-disabled off 10000 9100 Ethernet4
Eth1/2/2 - down phy-link-down off 10000 9100 Ethernet5
Eth1/2/3 - up oper-up off 10000 9100 Ethernet6
```
- *show interface status <reason>*
There is an option to list the interfaces with the specified reason. The output will have more details like related events with timestamp of occurrence.
Expand All @@ -264,21 +262,25 @@ sonic# show interface status err-disabled
----------------------------------------------------------------------------------
Name Event Timestamp
----------------------------------------------------------------------------------
Eth1/2/1 STP-err-disabled 2021-04-16 10:23:29
Eth1/2/1 stp-status-up 2021-04-16 10:23:29
```
- *show interface <interface>*
show interface command to display the down reasons as shown in the below example:
```
sonic# show interface Eth 1/2/2
Eth1/2/2 is up, line protocol is down, reason PHY-link-down
Remote-fault at 2021-01-06 07:49:45.737024
Local-fault at 2021-01-06 07:49:45.737024
Eth1/2/2 is up, line protocol is down, reason phy-link-down
Hardware is Eth
Mode of IPV4 address assignment: not-set
Mode of IPV6 address assignment: not-set
Interface IPv6 oper status: Disabled
IP MTU 9100 bytes
LineSpeed 100GB, Auto-negotiation off
Events:
port-breakout-inprogress at 2021-06-19.06:56:47.199816
admin-down at 2021-06-19.06:56:47.269480
initialized at 2021-06-19.06:56:48.730481
port-breakout-completed at 2021-06-19.06:56:50.871198
xcvr-status-up at 2021-06-19.06:56:59.084914
Last clearing of "show interface" counters: never
10 seconds input rate 0 packets/sec, 0 bits/sec, 0 Bytes/sec
10 seconds output rate 0 packets/sec, 0 bits/sec, 0 Bytes/sec
Expand All @@ -293,26 +295,29 @@ Output statistics:
```

The list of events:
Admin-down
Remote-fault
Local-fault
Link-training-failed
Link-training-not-completed
Link-training-not-started
Link-tuning-failed
Link-tuning-not-started
Link-tuning-not-completed
Incompatible-transceiver
Transceiver-not-present
Port-breakout-in-progress
High-BER
PMD-CDR-lock
PMD-signal-detected
STP-err-disabled
Transceiver-err-disabled
UDLD-err-disabled
Link-flap-err-disabled
PHY-link-up
admin-down
remote-fault
local-fault
link-training-failed
link-training-not-completed
link-training-not-started
link-tuning-failed
link-tuning-not-started
link-tuning-not-completed
incompatible-transceiver
transceiver-not-present
port-breakout-in-progress
port-breakout-completed
high-ber
pmd-cdr-lock
pmd-signal-detected
stp-status-down
stp-status-up
xcvr-status-down
xcvr-status-up
udld-status-down
udld-status-up
phy-link-up


#### Port channel interface
Expand All @@ -326,18 +331,18 @@ LACP-fail

```
sonic# show interface status
Name Description Oper Reason Speed MTU Alternate Name
Name Description Oper Reason AutoNeg Speed MTU Alternate Name
----------------------------------------------------------------------------------
Eth1/1 - Down Admin-down 100000 9100 Ethernet0
Eth1/2/1 - Down Err-disabled 10000 9100 Ethernet4
Eth1/2/2 - Down Phy-link-down 10000 9100 Ethernet5
Eth1/2/3 - Up Link-up 10000 9100 Ethernet6
PortChannel1 - Down Admin-down 20000 9100 -
PortChannel3 - Down Min-links 30000 9100 -
PortChannel5 - Down Err-disabled 30000 9100 -
PortChannel7 - Down All-links-down 40000 9100 -
PortChannel8 - Down LACP-fail 40000 9100 -
PortChannel9 - Up Up 10000 9100 -
Eth1/1 - down admin-down off 100000 9100 Ethernet0
Eth1/2/1 - down err-disabled off 10000 9100 Ethernet4
Eth1/2/2 - down phy-link-down off 10000 9100 Ethernet5
Eth1/2/3 - up oper-up off 10000 9100 Ethernet6
PortChannel1 - down admin-down - 20000 9100 -
PortChannel3 - down min-links - 30000 9100 -
PortChannel5 - down err-disabled - 30000 9100 -
PortChannel7 - down all-links-down - 40000 9100 -
PortChannel8 - down lacp-fail - 40000 9100 -
PortChannel9 - up oper-up - 10000 9100 -
```

- *show interface PortChannel [id]*
Expand Down Expand Up @@ -384,17 +389,17 @@ Example response data:
}


GET /restconf/data/openconfig-interfaces:interfaces/interface={name}/openconfig-if-ethernet:ethernet/state/openconfig-interfaces-ext:reason-events
GET /restconf/data/openconfig-interfaces:interfaces/interface={name}/openconfig-if-ethernet:ethernet/openconfig-interfaces-ext:reason-events

Example response data:
```
{
"openconfig-interfaces-ext:reason-events": {
"down-reason-event": [
"reason-event": [
{
"reason-event": {
"reason": "OPER_UP",
"event": "PHY-link-up",
"event": "phy-link-up",
"timestamp": "2021-06-06 09:29:55.639018"
}
}
Expand All @@ -407,11 +412,11 @@ Example response data for link down scenario:
```
{
"openconfig-interfaces-ext:reason-events": {
"down-reason-event": [
"reason-event": [
{
"reason-event": {
"reason": "PHY_LINK_DOWN",
"event": "Remote-fault",
"event": "remote-fault",
"timestamp": "2021-06-07 04:17:13.456626"
}
}
Expand Down

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