weave net 如何进行 广播消息 和组播消息

[yytlmm]

What you expected to happen?

What happened?

How to reproduce it?

Anything else we need to know?

Versions:

$ weave version
$ docker version
$ uname -a
$ kubectl version

Logs:

$ docker logs weave

or, if using Kubernetes:

$ kubectl logs -n kube-system <weave-net-pod> weave

Network:

$ ip route
$ ip -4 -o addr
$ sudo iptables-save

[murali-reddy]

@yytlmm are you expecting to fill in more details? If not please elaborate what is the problem you are running into.

[yytlmm]

@yytlmm are you expecting to fill in more details? If not please elaborate what is the problem you are running into.
ths ,the more details is
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE
java8-test-broadcast-57cff8898b-5j4bn 1/1 Running 0 17h 10.36.0.2 server-02
java8-test-broadcast-57cff8898b-g2nfq 1/1 Running 0 17h 10.44.0.2 server-03
java8-test-broadcast-57cff8898b-jpngh 1/1 Running 0 17h 10.44.0.1 server-03

there are three pod in k8s cluster, the pod(name=jpngh) send broadcast and multicast ,the pod(name=g2nfq and name=5j4bn) recive the message(broadcast mulitcast)
I try my best to test, the result is multicast is success, but broadcast is failed，pod is reciveed message is failed.

the net info is
weave Link encap:Ethernet HWaddr e2:b6:0b:fd:4a:dd
inet addr:10.36.0.0 Bcast:10.47.255.255 Mask:255.240.0.0
inet6 addr: fe80::e0b6:bff:fefd:4add/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1376 Metric:1
RX packets:23602 errors:0 dropped:0 overruns:0 frame:0
TX packets:24160 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1322276 (1.3 MB) TX bytes:54367398 (54.3 MB)

i send multicast IP address is 224.0.1.1 ,port is 12345 is ok
i send broadcast IP address is 10.47.255.255,port is 12345 is failed, IP address is 255.255.255.255 port is 12345 is failed.
两个程序不是同时进行的，实验好了组播后再实验的广播。目前测试的结论是：不同节点上的pod可以正常收发组播消息，而无法接收广播消息，同一个节点上也无法接收广播消息。单播消息正常。
我已知道并测试了其他的网络插件 Calico Canel Flanel 由于广播风暴而屏蔽广播消息和组播消息。
Thank you for your answer.

[murali-reddy]

thanks for the details. I tried. I see only ICMP works for broadcast IP address, but UDP does not seem to work. let me check if its supposed to work and revert back.

[yytlmm]

thank you