[Xen-users] XPC ip address on dom0 xenbr0 inaccessible from other local hosts

[Andrew Eross <eross@xxxxxxxxxxxx>]

Hi guys,

I have a hopefully simple question that I can't quite figure out.

I want to run a network service on my XCP dom0.

This is fine, I've setup the service and it's accessible from dom0 itself. 

However, if I try to connect to the service from another host on the same physical local network, I always get "unable to route to host".

In this case below, vh01 is the host with the service, and vh02 is another XCP host on the same physical switch and subnet.

[root@vh01 ~]# ifconfig

eth0      Link encap:Ethernet  HWaddr 00:13:72:1A:5F:D4  

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:12639 errors:0 dropped:0 overruns:0 frame:0

          TX packets:10968 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:2452496 (2.3 MiB)  TX bytes:7793328 (7.4 MiB)

          Interrupt:17 

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:9986 errors:0 dropped:0 overruns:0 frame:0

          TX packets:9986 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0 

          RX bytes:4963416 (4.7 MiB)  TX bytes:4963416 (4.7 MiB)

vif3.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  

          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1

          RX packets:2538 errors:0 dropped:0 overruns:0 frame:0

          TX packets:3366 errors:0 dropped:64 overruns:0 carrier:0

          collisions:0 txqueuelen:32 

          RX bytes:2583572 (2.4 MiB)  TX bytes:1504727 (1.4 MiB)

xenbr0    Link encap:Ethernet  HWaddr 00:13:72:1A:5F:D4  

          inet addr:192.168.41.21  Bcast:192.168.41.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:8693 errors:0 dropped:0 overruns:0 frame:0

          TX packets:5177 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0 

          RX bytes:883646 (862.9 KiB)  TX bytes:4931726 (4.7 MiB)

[root@vh01 ~]# telnet 192.168.41.21 3493

Trying 192.168.41.21...

Connected to 192.168.41.21.

Escape character is '^]'.

NOW trying from another host...

[root@vh02 ~]# telnet 192.168.41.21 3493

Trying 192.168.41.21...

telnet: connect to address 192.168.41.21: No route to host

Is there something basic I'm doing wrong here to be able to access my 41.21 address from another host?

Thank you,

Andrew

Andrew Eross
CTO
Locatrix Communications

eross@xxxxxxxxxxxx

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