2

After restarting the server, I can not ping and reach my virtual machines from the net and vice versa

[root@pc1(192.168.0.114) ~]# ping 192.168.0.63
PING 192.168.0.63 (192.168.0.63) 56(84) bytes of data.
From 192.168.0.114 icmp_seq=1 Destination Host Unreachable
From 192.168.0.114 icmp_seq=2 Destination Host Unreachable
From 192.168.0.114 icmp_seq=3 Destination Host Unreachable

But I can ping them from host server where Virtual Machines are located. This server is in the same network.

[root@vmhost]# ping 192.168.0.63
PING 192.168.0.63 (192.168.0.63) 56(84) bytes of data.
64 bytes from 192.168.0.63: icmp_seq=1 ttl=64 time=1.19 ms
64 bytes from 192.168.0.63: icmp_seq=2 ttl=64 time=0.242 ms
64 bytes from 192.168.0.63: icmp_seq=3 ttl=64 time=0.154 ms
64 bytes from 192.168.0.63: icmp_seq=4 ttl=64 time=0.230 ms

Iptables services are stopped at "vmhost" and at virtual machines.

Ifconfig command from "vmhost":

[root@vmhost network-scripts]# ifconfig

bond0
Link encap:Ethernet HWaddr D4:AE:52:64:86:77
inet6 addr: fe80::d6ae:52ff:fe64:8677/64 Scope:Link
UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
RX packets:1671 errors:0 dropped:0 overruns:0 frame:0
TX packets:569 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:146143 (142.7 KiB) TX bytes:69852 (68.2 KiB)

br0
Link encap:Ethernet HWaddr D4:AE:52:64:86:77
inet addr:192.168.0.51 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::d6ae:52ff:fe64:8677/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3225 errors:0 dropped:0 overruns:0 frame:0
TX packets:231 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:225879 (220.5 KiB) TX bytes:27689 (27.0 KiB)

br1
Link encap:Ethernet HWaddr D4:AE:52:64:86:7B
inet addr:192.168.20.132 Bcast:192.168.20.255 Mask:255.255.255.0
inet6 addr: fe80::d6ae:52ff:fe64:867b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:58 errors:0 dropped:0 overruns:0 frame:0
TX packets:56 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3769 (3.6 KiB) TX bytes:5815 (5.6 KiB)

eth0
Link encap:Ethernet HWaddr D4:AE:52:64:86:75
inet addr:192.168.0.140 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::d6ae:52ff:fe64:8675/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4312 errors:0 dropped:0 overruns:0 frame:0
TX packets:414 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:419278 (409.4 KiB) TX bytes:46874 (45.7 KiB)
eth1
Link encap:Ethernet HWaddr D4:AE:52:64:86:77
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:165 errors:0 dropped:0 overruns:0 frame:0
TX packets:486 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:26470 (25.8 KiB) TX bytes:59228 (57.8 KiB)

eth2
Link encap:Ethernet HWaddr D4:AE:52:64:86:77
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:1506 errors:0 dropped:0 overruns:0 frame:0
TX packets:83 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:119673 (116.8 KiB) TX bytes:10624 (10.3 KiB)

eth3
Link encap:Ethernet HWaddr D4:AE:52:64:86:7B
inet6 addr: fe80::d6ae:52ff:fe64:867b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:78 errors:0 dropped:0 overruns:0 frame:0
TX packets:87 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:6219 (6.0 KiB) TX bytes:9047 (8.8 KiB)

lo
Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:161324 errors:0 dropped:0 overruns:0 frame:0
TX packets:161324 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:456220429 (435.0 MiB) TX bytes:456220429 (435.0 MiB)

vnet0
Link encap:Ethernet HWaddr FE:54:00:44:71:57
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:40 errors:0 dropped:0 overruns:0 frame:0
TX packets:93 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:2072 (2.0 KiB) TX bytes:11520 (11.2 KiB)

vnet1
Link encap:Ethernet HWaddr FE:54:00:FB:E9:38
inet6 addr: fe80::fc54:ff:fefb:e938/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:75 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:352 (352.0 b) TX bytes:5147 (5.0 KiB)

vnet2
Link encap:Ethernet HWaddr FE:54:00:EA:D8:79
inet6 addr: fe80::fc54:ff:feea:d879/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:88 errors:0 dropped:0 overruns:0 frame:0
TX packets:151913 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:4636 (4.5 KiB) TX bytes:12025077 (11.4 MiB)

"ip route add" command

[root@vmhost]# ip route show
192.168.0.61 dev br0 scope link
192.168.0.63 dev br0 scope link
192.168.20.0/24 dev br1 proto kernel scope link src 192.168.20.132
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.140
192.168.0.0/24 dev br0 proto kernel scope link src 192.168.0.51
169.254.0.0/16 dev eth0 scope link metric 1002
169.254.0.0/16 dev br0 scope link metric 1040
169.254.0.0/16 dev br1 scope link metric 1044
default via 192.168.0.1 dev eth0

"brctl show" command

[root@vmhost]# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.d4ae52648677 no bond0 eth1 vnet0 vnet2
br1 8000.d4ae5264867b no eth3 vnet1

Information from Virtual guest machine:

Ifconfig command

[root@vmguest]# ifconfig eth0

Link encap:Ethernet HWaddr 52:54:00:44:71:57
inet addr:192.168.0.63 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:293 errors:0 dropped:0 overruns:0 frame:0
TX packets:77 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:38513 (37.6 KiB) TX bytes:7007 (6.8 KiB)

eth1
Link encap:Ethernet HWaddr 52:54:00:FB:E9:38
inet addr:192.168.20.130 Bcast:192.168.20.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:123 errors:0 dropped:0 overruns:0 frame:0
TX packets:21 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9541 (9.3 KiB) TX bytes:1579 (1.5 KiB)

lo
Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:14 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1488 (1.4 KiB) TX bytes:1488 (1.4 KiB)

ip route show command

[root@vmguest]# ip route show
192.168.20.0/24 dev eth1 proto kernel scope link src 192.168.20.130
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.63
169.254.0.0/16 dev eth0 scope link metric 1002
169.254.0.0/16 dev eth1 scope link metric 1003
default via 192.168.20.1 dev eth1

Have you got any suggestions?

Edit: Only ARP request are comming. Like this tcpdump -i eth1

12:28:19.232607 ARP, Request who-has 192.168.0.114 tell 192.168.0.63, length 28
12:28:19.232621 ARP, Request who-has 192.168.0.114 tell 192.168.0.63, length 28

to vnet2: Nothing


I add the STP to br0. the same situation

[root@srv01 network-scripts]# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.d4ae52648677 yes bond0 eth1 vnet0 vnet2
br1 8000.d4ae5264867b no eth3 vnet1

5
  • I assume vmhost is supposed to be receiving the echo request through eth1 and send them through vnet2, which should work since both are part of br0. Am I understanding your intention correctly? Have you looked at tcpdump output on both eth1 and vnet2 to see if the requests are both received and sent?
    – kasperd
    Jul 2, 2014 at 9:38
  • This virtual machine has one inside interface eth0 and one outside interface eth1. From outside I can reach it, but I can't reach local network. I can ping interfaces on vmhost.
    – Andrey
    Jul 2, 2014 at 10:32
  • All virtual machines ping each other. They also ping the vmhost-bridge interface and eth0. But they can not reach the local network. Maybe routing? I can not understand where and what route I need to enter.
    – Andrey
    Jul 2, 2014 at 10:54
  • More information could be provided by using ip address instead of ifconfig. Don't use ifconfig anymore, it's deprecated and useless.
    – suprjami
    Jul 2, 2014 at 10:55
  • Thanks for advice. I will note it. I am a newbie will Red Hat.
    – Andrey
    Jul 2, 2014 at 11:49

2 Answers 2

1

Your br0 has both bond0 and eth1 (a bonding slave) in it, and you have no Spanning-Tree on anything.

I suspect you have created a network loop and need to remove eth1 from the bridge.

2
  • Not working. Do you have any suggestions? I'm tried to reinizialized interfaced.I delete bond0, br0, eth1,eth2. I created br0 with IP address. After it I have created eth1 and add it to br0. When I restarted the service, it show the message, that eth1 was already in bridge with another bridge. Where can I check, how interface are used?
    – Andrey
    Jul 2, 2014 at 13:11
  • Show us each of the files in /etc/sysconfig/network-scripts/ifcfg-*, the output of ip addr instead of ifconfig, cat /proc/net/bonding/bond0, and brctl show
    – suprjami
    Jul 3, 2014 at 10:46
0

Launch in your HOST those commands:

ip -d link show type macvtap 

It will show all macvtap devices. After launch try this for each device:

sudo ip link set MACVTAP_DEVICE type macvtap mode bridge

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .