Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Update load-balancer-faqs.yml #125463

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Update load-balancer-faqs.yml #125463

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 8 additions & 0 deletions articles/load-balancer/load-balancer-faqs.yml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,14 @@ sections:
By using the nslookup command, you can send a DNS query for the name myip.opendns.com to the OpenDNS resolver. The service returns the source IP address that was used to send the query. When you run the following query from your VM, the response is the public IP used for that VM:
```nslookup myip.opendns.com resolver1.opendns.com```
- question: |
Can I ping from a backend VM behind a load balancer to a public IP?
answer: |
No, this will not work. Azure Load Balancer does not support ICMP for outbound NAT.
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Change answer to: "No, Azure Load Balancer does not support ICMP pings for outbound connectivity. If you want to ping outbound from a backend VM behind a load balancer, associate an Instance-level Public IP to the backend VM and send pings from that IP."

Only TCP and UDP are supported protocols for outbound connections.
ICMP will only function for outbound connections if the backend VM has an Instance-Level Public IP
(ILPIP). Without an ILPIP, ICMP outbound packets will be discarded.
- question: |
Can I add a VM from the same availability set to different backend pools of a load balancer?
Expand Down