private network between VMs

[Darkman]

Hello everyone

Am new here and come need your help .

I have two problems here .

i have three host servers as cluster in the private range 10.4.48.0/27 , with a datacenter that put it togather the servers in Ip Pool for us .

pve1 / 10.4.48.2
pve2 / 10.4.48.3
pve3 / 10.4.48.4

I can move any VM between two servers , and the private network still pinging .
any VM moved to the third server stoped pinging ,


from any VM on (pve1/pve2) , I can ping the getaway 10.4.48.1, all hosts and all Vms (ex: 10.4.48.10-20) rised on any of (pve1/pve2)
from any VM on (pve3) , I can only ping the getaway 10.4.48.1 , nothing else .

also I noticed that when I used config like this :

auto vmbr1
iface vmbr1 inet static
        address  10.4.48.2
        netmask  27
        bridge-ports eno2
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

auto vmbr1
iface vmbr1 inet static
        address  10.4.48.3
        netmask  27
        bridge-ports eno2
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

only work with pve1 and pve2 and the two see each other , the pve3 than cannot ping the range ,

the only way to work is to use :

auto vmbr1
iface vmbr1 inet static
        address  10.4.48.4
        netmask  32
        bridge-ports eno2
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

just to let it see the range .


what is the problem , I tried everything I could , with no luck

 

[readyspace]

What’s the model of the switch you are using?

 

[Darkman]

i don`t know , the whole hardware rented from A DC

 

[readyspace]

If you are using a L2 switch with VLAN features, you have to tag VLAN it to get it work as far as I know.

 

[Darkman]

If you are using a L2 switch with VLAN features, you have to tag VLAN it to get it work as far as I know.

this fix my problems


thank you so much