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Re: [Xen-users] SSH ping etc not working between dom0 and domU's



Ilari Mäkelä wrote:
Jeroen Torrekens wrote:
Hi,

I think you might want to check this:

Here is ifconfig from dom0:

eth0      Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
        inet addr:192.168.1.5  Bcast:192.168.1.255  Mask:255.255.255.0
        inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
        UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
        RX packets:3422 errors:0 dropped:0 overruns:0 frame:0
        TX packets:2133 errors:0 dropped:0 overruns:0 carrier:0
        collisions:0 txqueuelen:1000
        RX bytes:347388 (339.2 KiB)  TX bytes:417210 (407.4 KiB)
        Interrupt:16 Base address:0x6000

Especially the hardware address.

Jeroen
Hi,

Thanks for the reply. That is the hardware address that was setup when I installed Debian. If I try to change that hardware address in /etc/network/interface config file I can't ssh to my dom0 machine anymore from other computers in my network. I know it looks weird but if I change it my network on eth0 dies. Now I changed my configuration a bit and it looks like this now:

This is my network script at the moment, found this one from this list:

#!/bin/sh

brctl addbr xenbr0
brctl setfd xenbr0 0
brctl sethello xenbr0 0
brctl stp xenbr0 off
ifconfig eth2 0.0.0.0 down
ifconfig eth2 0.0.0.0 up
brctl addif xenbr0 eth2
ifconfig xenbr0 10.0.0.1 netmask 255.255.255.0

sleep 5

brctl addbr xenbr1
brctl setfd xenbr1 0
brctl sethello xenbr1 0
brctl stp xenbr1 off
ifconfig eth3 0.0.0.0 down
ifconfig eth3 0.0.0.0 up
brctl addif xenbr1 eth3
ifconfig xenbr1 10.0.1.2 netmask 255.255.255.0

sleep 5

ifconfig eth2 0.0.0.0
ifconfig eth3 0.0.0.0
exit 0


ifconfig on dom0:

eth0      Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         inet addr:192.168.1.5  Bcast:192.168.1.255  Mask:255.255.255.0
         inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:296 errors:0 dropped:0 overruns:0 frame:0
         TX packets:267 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:29514 (28.8 KiB)  TX bytes:33556 (32.7 KiB)
         Interrupt:16 Base address:0x6000


eth2      Link encap:Ethernet  HWaddr 00:1C:F0:5B:69:F8
         inet6 addr: fe80::21c:f0ff:fe5b:69f8/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:90 errors:0 dropped:0 overruns:0 frame:0
         TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:7356 (7.1 KiB)  TX bytes:1056 (1.0 KiB)
         Interrupt:22 Base address:0xe000

eth3      Link encap:Ethernet  HWaddr 00:1C:F0:5A:5D:72
         inet6 addr: fe80::21c:f0ff:fe5a:5d72/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:253 errors:0 dropped:0 overruns:0 frame:0
         TX packets:159 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:22429 (21.9 KiB)  TX bytes:17327 (16.9 KiB)
         Interrupt:17

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:26 errors:0 dropped:0 overruns:0 frame:0
         TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:2360 (2.3 KiB)  TX bytes:2360 (2.3 KiB)

vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
         UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
         RX packets:9 errors:0 dropped:0 overruns:0 frame:0
         TX packets:74 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:252 (252.0 b)  TX bytes:6114 (5.9 KiB)

vif2.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
         UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
         RX packets:174 errors:0 dropped:0 overruns:0 frame:0
         TX packets:242 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:14867 (14.5 KiB)  TX bytes:21373 (20.8 KiB)

xenbr0    Link encap:Ethernet  HWaddr 00:1C:F0:5B:69:F8
         inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0
         inet6 addr: fe80::21c:f0ff:fe5b:69f8/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:99 errors:0 dropped:0 overruns:0 frame:0
         TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:6348 (6.1 KiB)  TX bytes:552 (552.0 b)

xenbr1    Link encap:Ethernet  HWaddr 00:1C:F0:5A:5D:72
         inet addr:10.0.1.2  Bcast:10.0.1.255  Mask:255.255.255.0
         inet6 addr: fe80::21c:f0ff:fe5a:5d72/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:111 errors:0 dropped:0 overruns:0 frame:0
         TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:6642 (6.4 KiB)  TX bytes:594 (594.0 b)

and kernel routing table on dom0:

Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface 10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 xenbr0 10.0.1.0 0.0.0.0 255.255.255.0 U 0 0 0 xenbr1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0

Now I can ping my dom0 from domU's but everything else is still failing. Can't ping my domU's from dom0 and ssh doesn't work at all. So there is little progress because ping wasn't working at all before and now it works from domU to dom0.

Ilari Mäkelä
Could you provide me with the output of 'brctl show' ?
Thanks!

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