Metrics about Azure load balancer Standard

Question

Metrics about Azure load balancer Standard

HASSAN BIN NASIR DAR 351

Hi

Can you explain me what is the difference among All Directions, all Frontent IP and All fronteng Ports?

metrics01

metrics02 It seems to me all sections have same type of data. For example

Direction 80: It shows how much HTTP traffic is coming to the load balancer.

Direction 68.158.90.23: It shows how much Traffic is hitting to the load balancer's public IP.

Direction In: It shows how much Traffic is inside the load balancer.

Direction Out: It shows how much traffic Load balancer is sending (outgoing) to the backend VMs.

Are these statements are correct? Please correct me if something is wrong. Also please explain me Frontend IP and Frontend Port portion. Thanks

HASSAN BIN NASIR DAR 351 Reputation points

2025-03-16T19:56:51.6266667+00:00

Hi

Can you explain me (frontend IPs and Frontend ports) line by line? As I did for the directions.
Abiola Akinbade 27,060 Reputation points

2025-03-17T00:04:28.9133333+00:00

Frontend IP: The IP addresses that the Azure Load Balancer listens on. These could be public or private. It measures traffic per specific IP that the load balancer is listening on.

Frontend Port: The port on which the load balancer is receiving requests.

Example: Frontend Port 80 shows HTTP traffic received on port 80.
HASSAN BIN NASIR DAR 351 Reputation points

2025-03-17T10:50:40.39+00:00

Thanks for the answer.

Can you please explain line by line.

(Frontend IP "80", frontend IP "public ip", frontend IP "IN" and frontend IP "OUT") (Frontend port "80", frontend port "public IP", frontend port "IN" and frontend port "OUT")

See the image in above message. thanks
Sai Prasanna Sinde 5,485 Reputation points Microsoft External Staff

2025-03-19T04:43:08.14+00:00
Hi @HASSAN BIN NASIR DAR

FrontEnd IP Section

FrontEnd IP 80: This seems to be incorrect. FrontEnd IPs are actual IP addresses, not port numbers like 80. It seems there's a mix-up in the labelling. It should be an IP address. If it was an IP address, then this would show the amount of traffic going to that specific Frontend IP.

FrontEnd IP 132.196.106.34: This shows the amount of traffic specifically going to the FrontEnd IP address 132.196.106.34. This is valuable for seeing the traffic distribution across different public IPs if you have multiple.

FrontEnd IP Out: This seems to be incorrect. Frontend IPs are for incoming traffic. Outgoing traffic is related to the backend resources.

FrontEnd Port Section

FrontEnd Port 80: This shows the amount of traffic going to the load balancer on port 80. This is typically HTTP traffic.

FrontEnd Port 132.196.106.34: This seems to be incorrect. Frontend Ports are port numbers, not IP addresses. It seems there is a mix up in the labelling of the data.

FrontEnd Port Out: This seems to be incorrect. Frontend Ports are for incoming traffic. Outgoing traffic is related to the backend resources.

FrontEnd IPs and FrontEnd Ports are primarily for incoming traffic to the load balancer.

We think there are some labelling errors in the image you provided and the 80 in Frontend IP and the IP in the Frontend port are switched. Also, the OUT in the frontend IP and port sections seem to be incorrect.

I hope this has been helpful!

Your feedback is important so please take a moment to accept answers.

If you still have questions, please let us know what is needed in the comments so the question can be answered.
Sai Prasanna Sinde 5,485 Reputation points Microsoft External Staff

2025-03-20T04:32:22.6+00:00

@HASSAN BIN NASIR DAR

I hope the below provided answer has been helpful!

Your feedback is important so please take a moment to accept answers.

If you still have questions, please let us know what is needed in the comments so the question can be answered.
HASSAN BIN NASIR DAR 351 Reputation points

2025-03-22T00:28:54.76+00:00

Hi

I have tried to create a new load balancer many times but I can see same interface which you are saying incorrect.
G Sree Vidya 905 Reputation points Microsoft External Staff

2025-03-25T06:21:44.6333333+00:00

Hello @Hassan Bin Nasir Dar

I wanted to follow up and check if you had the opportunity to review the information provided by Sai Prasanna Sinde in our previous post.

Kindly let us know if the above helps or you need further assistance on this issue.

2 answers

Your answer

HASSAN BIN NASIR DAR 351 Reputation points

2025-03-16T19:56:51.6266667+00:00

Hi

Can you explain me (frontend IPs and Frontend ports) line by line? As I did for the directions.
Abiola Akinbade 27,060 Reputation points

2025-03-17T00:04:28.9133333+00:00

Frontend IP: The IP addresses that the Azure Load Balancer listens on. These could be public or private. It measures traffic per specific IP that the load balancer is listening on.

Frontend Port: The port on which the load balancer is receiving requests.

Example: Frontend Port 80 shows HTTP traffic received on port 80.
HASSAN BIN NASIR DAR 351 Reputation points

2025-03-17T10:50:40.39+00:00

Thanks for the answer.

Can you please explain line by line.

(Frontend IP "80", frontend IP "public ip", frontend IP "IN" and frontend IP "OUT") (Frontend port "80", frontend port "public IP", frontend port "IN" and frontend port "OUT")

See the image in above message. thanks
Sai Prasanna Sinde 5,485 Reputation points Microsoft External Staff

2025-03-19T04:43:08.14+00:00

Hi @HASSAN BIN NASIR DAR

FrontEnd IP Section

FrontEnd IP 80: This seems to be incorrect. FrontEnd IPs are actual IP addresses, not port numbers like 80. It seems there's a mix-up in the labelling. It should be an IP address. If it was an IP address, then this would show the amount of traffic going to that specific Frontend IP.

FrontEnd IP 132.196.106.34: This shows the amount of traffic specifically going to the FrontEnd IP address 132.196.106.34. This is valuable for seeing the traffic distribution across different public IPs if you have multiple.

FrontEnd IP Out: This seems to be incorrect. Frontend IPs are for incoming traffic. Outgoing traffic is related to the backend resources.

FrontEnd Port Section

FrontEnd Port 80: This shows the amount of traffic going to the load balancer on port 80. This is typically HTTP traffic.

FrontEnd Port 132.196.106.34: This seems to be incorrect. Frontend Ports are port numbers, not IP addresses. It seems there is a mix up in the labelling of the data.

FrontEnd Port Out: This seems to be incorrect. Frontend Ports are for incoming traffic. Outgoing traffic is related to the backend resources.

FrontEnd IPs and FrontEnd Ports are primarily for incoming traffic to the load balancer.

We think there are some labelling errors in the image you provided and the 80 in Frontend IP and the IP in the Frontend port are switched. Also, the OUT in the frontend IP and port sections seem to be incorrect.

I hope this has been helpful!

Your feedback is important so please take a moment to accept answers.

If you still have questions, please let us know what is needed in the comments so the question can be answered.
Sai Prasanna Sinde 5,485 Reputation points Microsoft External Staff

2025-03-20T04:32:22.6+00:00

@HASSAN BIN NASIR DAR

I hope the below provided answer has been helpful!

Your feedback is important so please take a moment to accept answers.

If you still have questions, please let us know what is needed in the comments so the question can be answered.
HASSAN BIN NASIR DAR 351 Reputation points

2025-03-22T00:28:54.76+00:00

Hi

I have tried to create a new load balancer many times but I can see same interface which you are saying incorrect.
G Sree Vidya 905 Reputation points Microsoft External Staff

2025-03-25T06:21:44.6333333+00:00

Hello @Hassan Bin Nasir Dar

I wanted to follow up and check if you had the opportunity to review the information provided by Sai Prasanna Sinde in our previous post.

Kindly let us know if the above helps or you need further assistance on this issue.

Answer 1

Hello HASSAN BIN NASIR DAR,

Thanks for your question

Yes most of your assertions are correct.

Direction “In”: is how much traffic is received by the load balancer, not necessarily inside the load balancer. This includes requests coming from clients to the frontend IP of the load balancer.

Direction “Out”: your statement is correct but It does not measure all outgoing traffic, only traffic directed to backend resources.

See:: https://learn.microsoft.com/en-us/azure/load-balancer/load-balancer-standard-diagnostics

You can mark it 'Accept Answer' and 'Upvote' if this helped you

(Please note: If you have Priority Community support please wait for a dedicated Microsoft support representative to assist you, as they have access to the necessary backend resources. If you have not yet opened a support case, we recommend reaching out through the support channel available under your subscription level.)

Regards,

Abiola

Answer 2

Hi @HASSAN BIN NASIR DAR

You need to click on Direction, add a metric (like packet count, Byte count, Allocated SNAT Ports, etc.), then select an aggregation (Count, Min, Max, Sum, etc.). Next, click on apply splitting, and under the values field, select as per your requirement (Direction, Frontend IP, Frontend Port). Finally, mention the limit and values, and refresh.

Then go to insights of Azure Load Balancer and click on view detailed metrics, you will be able to see the values under Metrics as below:

User's image

I hope this has been helpful!

Your feedback is important so please take a moment to accept answers.

If you still have questions, please let us know what is needed in the comments so the question can be answered.

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Metrics about Azure load balancer Standard

2 answers

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