Can't ping broadcast addressed in AWS VPC
I want to find all the existed IPs in my subnet on AWS. I use ping -b in my EC2. But there is no response. $ ifconfig eth0 eth0 Link encap:Ethernet HWaddr 06:8f:a3:06:38:75 inet addr:172.16.33.10 Bcast:172.16.33.255 Mask:255.255.255.0 inet6 addr: fe80::48f:a3ff:fe06:3875/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:9001 Metric:1 RX packets:54018 errors:0 dropped:0 overruns:0 frame:0 TX packets:39295 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:41673791 (41.6 MB) TX bytes:9891811 (9.8 MB) $ ping -v -b 172.16.33.255 WARNING: pinging broadcast address PING 172.16.33.255 (172.16.33.255) 56(84) bytes of data. I have modify the security group and allow all traffic. I wonder AWS forbid the ping -b.
The AWS network does not have broadcast or multicast capability. Q. Does Amazon VPC support multicast or broadcast? No. https://aws.amazon.com/vpc/faqs/ The Ethernet network you see is not what it appears -- it's a software defined network. See Another Day, Another Billion Packets (YouTube, official AWS) for some solid insights into how the network works.
The official document said "The Amazon VPC don't support multicast nor broadcast." Q. Does Amazon VPC support multicast or broadcast? No.
How can I allow multiple users to access the same amazon instance at the same time? [closed]
How to find if my Amazon EC2 instance is 32 bit or 64 bit?
Amazon EC2 Compute Unit and GCEU (Google Compute Engine Unit)
Tomcat on Amazon EC2
Jetty is not receiving http request from outside on ec2
Join performance on AWS elastic map reduce running hive
Undelete files from amazon EC2 EBS
EC2 Instance Crashes and need to restart from terminal
Amazon EC2 autoscaling down with graceful shutdown?
Rapid AWS autoscaling
AWS Elastic Load Balancer and multiple availability zones
Amazon EC2 high availability
How to install GraphicsMagick with PNG support on Amazon EC2?
How to configure Cassandra to work across multiple EC2 regions with Ec2MultiRegionSnitch
EC2 instance stopped working after creating an Image
Synchronizing Amazon EC2 with Rsync