Hi all,

I have say two bridges on my machine,bridge br1 is on one network with ips 10.0.xx.xx and bridge br2 has an ip 192.168.xx.xx ,if i mount an ethernet card eth1 on br2.how can eth1 communicate with devices on br1?

do we need to add some additional route to system?


regards,
yashwanth

if your machine is directly connected to both network then it should already have a route to them..

what does the output of route -n look like ?


man route for information on manually adding routes to your system.

Thank you for your reply..

here are the ifconfig,brctl ,route -n details of my machine:

[root@localhost ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1A:A0:70:4E:0C
inet addr:172.25.148.25 Bcast:172.25.149.255 Mask:255.255.254.0
inet6 addr: fe80::21a:a0ff:fe70:4e0c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:320576 errors:0 dropped:0 overruns:0 frame:0
TX packets:9513 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:49265623 (46.9 MiB) TX bytes:1690207 (1.6 MiB)
Memory:fe9e0000-fea00000

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:7014 errors:0 dropped:0 overruns:0 frame:0
TX packets:7014 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:371679 (362.9 KiB) TX bytes:371679 (362.9 KiB)

ovirtbr0 Link encap:Ethernet HWaddr DA:69:CC:7D:8B:32
inet addr:192.168.50.1 Bcast:192.168.50.255 Mask:255.255.255.0
inet6 addr: fe80::d869:ccff:fe7d:8b32/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:5957 (5.8 KiB)

virbr0 Link encap:Ethernet HWaddr D2:40:64:77:5E:AC
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
inet6 addr: fe80::d040:64ff:fe77:5eac/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:6065 (5.9 KiB)

[root@localhost ~]# brctl show
bridge name bridge id STP enabled interfaces
ovirtbr0 8000.000000000000 no
pan0 8000.000000000000 no
virbr0 8000.000000000000 yes
[root@localhost ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.50.0 0.0.0.0 255.255.255.0 U 0 0 0 ovirtbr0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
172.25.148.0 0.0.0.0 255.255.254.0 U 0 0 0 eth0
0.0.0.0 172.25.148.1 0.0.0.0 UG 0 0 0 eth0

if eth1 is an ethernet card mounted on bridge ovirtbr0,then will that be able to ping eth0 ?