Bridge two ethernet interfaces in virtualbox. CentOS 7 [closed]

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I created the test environment in the VirtualBox:
Three virtual machines:

1 - like end-point host (IP static 192.168.1.2) - one ethernet interface connected to virtual lan (intnet1)

2 - like bridge host (IP 192.168.1.1) - two ethernet interfaces connected to virtual lan (intnet1 intnet2 respectively)

3 - like end-point host (IP static 192.168.1.3) - one ethernet interface connected to virtual lan (intnet2)



All machines clearly installed CentOS Linux release 7.3.1611 (Core)



configurations of network interfaces:
Machine-1: (/etc/sysconfig/network-scripts/ifcfg-enp0s3)




TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.2

NETMASK=255.255.255.0
NM_CONTROLLED=no
NAME=enp0s3
DEVICE=enp0s3
ONBOOT=yes




Machine-3: (/etc/sysconfig/network-scripts/ifcfg-enp0s3)




TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.3

NETMASK=255.255.255.0
NM_CONTROLLED=no
NAME=enp0s3
DEVICE=enp0s3
ONBOOT=yes




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-eth0)




TYPE=Ethernet
NM_CONTROLLED=no
DEVICE=enp0s3
ONBOOT=yes
BRIDGE=br0




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-eth1)




TYPE=Ethernet
NM_CONTROLLED=no
DEVICE=enp0s8
ONBOOT=yes
BRIDGE=br0




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-br0)




DEVICE=br0
TYPE=Bridge
STP=off
ONBOOT=yes
BOOTPROTO=none
IPADDR=192.168.1.1
NETMASK=255.255.255.0
NM_CONTROLLED=no




When I starts all interfaces on all machines:

Machine-1 can reach with Machine-2 via enp0s3

Machine-3 can not reach any other machine and other machine can not reach the Machine-3



How using Machine[1,3] reach any of them usign bridge?



What I doing wrong? Or may be I forgott to something else...



Thanks in advance!




centos virtualbox bridge




share|improve this question












closed as off-topic by Jeff Schaller, Wouter Verhelst, G-Man, dr01, jimmij Mar 21 at 19:13


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "Questions describing a problem that can't be reproduced and seemingly went away on its own (or went away when a typo was fixed) are off-topic as they are unlikely to help future readers." – Jeff Schaller, Wouter Verhelst, G-Man, dr01, jimmij
If this question can be reworded to fit the rules in the help center, please edit the question.












  • While trying to ping any machine I see right MAC-addresses of destinations hosts. But no packages in tcpdump
    – i.kimiko
    Mar 12 at 19:59














up vote
0
down vote

favorite












I created the test environment in the VirtualBox:
Three virtual machines:

1 - like end-point host (IP static 192.168.1.2) - one ethernet interface connected to virtual lan (intnet1)

2 - like bridge host (IP 192.168.1.1) - two ethernet interfaces connected to virtual lan (intnet1 intnet2 respectively)

3 - like end-point host (IP static 192.168.1.3) - one ethernet interface connected to virtual lan (intnet2)



All machines clearly installed CentOS Linux release 7.3.1611 (Core)



configurations of network interfaces:
Machine-1: (/etc/sysconfig/network-scripts/ifcfg-enp0s3)




TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.2

NETMASK=255.255.255.0
NM_CONTROLLED=no
NAME=enp0s3
DEVICE=enp0s3
ONBOOT=yes




Machine-3: (/etc/sysconfig/network-scripts/ifcfg-enp0s3)




TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.3

NETMASK=255.255.255.0
NM_CONTROLLED=no
NAME=enp0s3
DEVICE=enp0s3
ONBOOT=yes




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-eth0)




TYPE=Ethernet
NM_CONTROLLED=no
DEVICE=enp0s3
ONBOOT=yes
BRIDGE=br0




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-eth1)




TYPE=Ethernet
NM_CONTROLLED=no
DEVICE=enp0s8
ONBOOT=yes
BRIDGE=br0




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-br0)




DEVICE=br0
TYPE=Bridge
STP=off
ONBOOT=yes
BOOTPROTO=none
IPADDR=192.168.1.1
NETMASK=255.255.255.0
NM_CONTROLLED=no




When I starts all interfaces on all machines:

Machine-1 can reach with Machine-2 via enp0s3

Machine-3 can not reach any other machine and other machine can not reach the Machine-3



How using Machine[1,3] reach any of them usign bridge?



What I doing wrong? Or may be I forgott to something else...



Thanks in advance!




centos virtualbox bridge




share|improve this question












closed as off-topic by Jeff Schaller, Wouter Verhelst, G-Man, dr01, jimmij Mar 21 at 19:13


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "Questions describing a problem that can't be reproduced and seemingly went away on its own (or went away when a typo was fixed) are off-topic as they are unlikely to help future readers." – Jeff Schaller, Wouter Verhelst, G-Man, dr01, jimmij
If this question can be reworded to fit the rules in the help center, please edit the question.












  • While trying to ping any machine I see right MAC-addresses of destinations hosts. But no packages in tcpdump
    – i.kimiko
    Mar 12 at 19:59












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I created the test environment in the VirtualBox:
Three virtual machines:

1 - like end-point host (IP static 192.168.1.2) - one ethernet interface connected to virtual lan (intnet1)

2 - like bridge host (IP 192.168.1.1) - two ethernet interfaces connected to virtual lan (intnet1 intnet2 respectively)

3 - like end-point host (IP static 192.168.1.3) - one ethernet interface connected to virtual lan (intnet2)



All machines clearly installed CentOS Linux release 7.3.1611 (Core)



configurations of network interfaces:
Machine-1: (/etc/sysconfig/network-scripts/ifcfg-enp0s3)




TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.2

NETMASK=255.255.255.0
NM_CONTROLLED=no
NAME=enp0s3
DEVICE=enp0s3
ONBOOT=yes




Machine-3: (/etc/sysconfig/network-scripts/ifcfg-enp0s3)




TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.3

NETMASK=255.255.255.0
NM_CONTROLLED=no
NAME=enp0s3
DEVICE=enp0s3
ONBOOT=yes




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-eth0)




TYPE=Ethernet
NM_CONTROLLED=no
DEVICE=enp0s3
ONBOOT=yes
BRIDGE=br0




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-eth1)




TYPE=Ethernet
NM_CONTROLLED=no
DEVICE=enp0s8
ONBOOT=yes
BRIDGE=br0




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-br0)




DEVICE=br0
TYPE=Bridge
STP=off
ONBOOT=yes
BOOTPROTO=none
IPADDR=192.168.1.1
NETMASK=255.255.255.0
NM_CONTROLLED=no




When I starts all interfaces on all machines:

Machine-1 can reach with Machine-2 via enp0s3

Machine-3 can not reach any other machine and other machine can not reach the Machine-3



How using Machine[1,3] reach any of them usign bridge?



What I doing wrong? Or may be I forgott to something else...



Thanks in advance!




centos virtualbox bridge




share|improve this question












I created the test environment in the VirtualBox:
Three virtual machines:

1 - like end-point host (IP static 192.168.1.2) - one ethernet interface connected to virtual lan (intnet1)

2 - like bridge host (IP 192.168.1.1) - two ethernet interfaces connected to virtual lan (intnet1 intnet2 respectively)

3 - like end-point host (IP static 192.168.1.3) - one ethernet interface connected to virtual lan (intnet2)



All machines clearly installed CentOS Linux release 7.3.1611 (Core)



configurations of network interfaces:
Machine-1: (/etc/sysconfig/network-scripts/ifcfg-enp0s3)




TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.2

NETMASK=255.255.255.0
NM_CONTROLLED=no
NAME=enp0s3
DEVICE=enp0s3
ONBOOT=yes




Machine-3: (/etc/sysconfig/network-scripts/ifcfg-enp0s3)




TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.3

NETMASK=255.255.255.0
NM_CONTROLLED=no
NAME=enp0s3
DEVICE=enp0s3
ONBOOT=yes




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-eth0)




TYPE=Ethernet
NM_CONTROLLED=no
DEVICE=enp0s3
ONBOOT=yes
BRIDGE=br0




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-eth1)




TYPE=Ethernet
NM_CONTROLLED=no
DEVICE=enp0s8
ONBOOT=yes
BRIDGE=br0




Machine-2: (/etc/sysconfig/network-scripts/ifcfg-br0)




DEVICE=br0
TYPE=Bridge
STP=off
ONBOOT=yes
BOOTPROTO=none
IPADDR=192.168.1.1
NETMASK=255.255.255.0
NM_CONTROLLED=no




When I starts all interfaces on all machines:

Machine-1 can reach with Machine-2 via enp0s3

Machine-3 can not reach any other machine and other machine can not reach the Machine-3



How using Machine[1,3] reach any of them usign bridge?



What I doing wrong? Or may be I forgott to something else...



Thanks in advance!





centos virtualbox bridge





share|improve this question











share|improve this question




share|improve this question










asked Mar 7 at 16:01









i.kimiko

112




112




closed as off-topic by Jeff Schaller, Wouter Verhelst, G-Man, dr01, jimmij Mar 21 at 19:13


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "Questions describing a problem that can't be reproduced and seemingly went away on its own (or went away when a typo was fixed) are off-topic as they are unlikely to help future readers." – Jeff Schaller, Wouter Verhelst, G-Man, dr01, jimmij
If this question can be reworded to fit the rules in the help center, please edit the question.




closed as off-topic by Jeff Schaller, Wouter Verhelst, G-Man, dr01, jimmij Mar 21 at 19:13


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "Questions describing a problem that can't be reproduced and seemingly went away on its own (or went away when a typo was fixed) are off-topic as they are unlikely to help future readers." – Jeff Schaller, Wouter Verhelst, G-Man, dr01, jimmij
If this question can be reworded to fit the rules in the help center, please edit the question.











  • While trying to ping any machine I see right MAC-addresses of destinations hosts. But no packages in tcpdump
    – i.kimiko
    Mar 12 at 19:59
















  • While trying to ping any machine I see right MAC-addresses of destinations hosts. But no packages in tcpdump
    – i.kimiko
    Mar 12 at 19:59















While trying to ping any machine I see right MAC-addresses of destinations hosts. But no packages in tcpdump
– i.kimiko
Mar 12 at 19:59




While trying to ping any machine I see right MAC-addresses of destinations hosts. But no packages in tcpdump
– i.kimiko
Mar 12 at 19:59










1 Answer
1






active

oldest

votes

















up vote
1
down vote



accepted










I forgot to enable promiscuous mode for ethernet interfaces in settings for virtual machine-2. After that bridge works fine for me.






share|improve this answer



























    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    1
    down vote



    accepted










    I forgot to enable promiscuous mode for ethernet interfaces in settings for virtual machine-2. After that bridge works fine for me.






    share|improve this answer
























      up vote
      1
      down vote



      accepted










      I forgot to enable promiscuous mode for ethernet interfaces in settings for virtual machine-2. After that bridge works fine for me.






      share|improve this answer






















        up vote
        1
        down vote



        accepted







        up vote
        1
        down vote



        accepted






        I forgot to enable promiscuous mode for ethernet interfaces in settings for virtual machine-2. After that bridge works fine for me.






        share|improve this answer












        I forgot to enable promiscuous mode for ethernet interfaces in settings for virtual machine-2. After that bridge works fine for me.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Mar 13 at 12:22









        i.kimiko

        112




        112












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