Re: Xen vif-route + vm's interconnection
Resolved : echo 1 > /proc/sys/net/ipv4/conf/all/proxy_arp
2009/10/4 Wojciech Ziniewicz <wojciech.ziniewicz@gmail.com>:
> Hi,
> I have debian lenny with Xen + 2vms using vif-route script.
> Every machine has public IP address .
>
> Is this Xen-specific case or this is my misunderstanding of basic
> routing problems , but it seems that my machines can't reach each
> other.
>
> Here's the configuration ( ip a l & ip route for each host)
>
> Dom0 :
>
> root@dom0:~# ip a l | grep -B 2
> 1: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000
> link/ether 00:30:48:ba:25:3e brd ff:ff:ff:ff:ff:ff
> inet 23.23.195.111/24 brd 23.23.195.255 scope global eth0
> --
> 25: vif10.0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 32
> link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
> inet 23.23.195.111/32 brd 23.255.255.255 scope global vif10.0
> --
> 26: vif11.0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 32
> link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
> inet 23.23.195.111/32 brd 23.255.255.255 scope global vif11.0
> --
> 27: vif12.0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 32
> link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
> inet 23.23.195.111/32 brd 23.255.255.255 scope global vif12.0
>
> ------------------------
> root@dom0:~# ip route
> 23.23.23.147 dev vif12.0 scope link src 23.23.195.111
> 23.23.95.220 dev vif11.0 scope link src 23.23.195.111
> 23.23.23.141 dev vif10.0 scope link src 23.23.195.111
> 23.23.195.0/24 dev eth0 proto kernel scope link src 23.23.195.111
> default via 23.23.195.254 dev eth0
>
> DomU (1st host debian01):
>
> root@debian01:/etc/powerdns# ip route
> 23.23.195.111 dev eth0 scope link
> default via 23.23.195.111 dev eth0
>
> -----
>
> root@debian01:/etc/powerdns# ip a l
> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
> state UP qlen 1000
> link/ether 00:16:3e:0f:26:8c brd ff:ff:ff:ff:ff:ff
> inet 23.23.23.141/32 brd 23.255.255.255 scope global eth0
>
>
> DomU (2nd host - debian02 ):
>
> debian02:/etc/powerdns# ip route
> 23.23.195.111 dev eth0 scope link
> 23.0.0.0/8 dev eth0 proto kernel scope link src 23.23.95.220
> default via 23.23.195.111 dev eth0
>
> -----------
>
> debian02:/etc/powerdns# ip a l
> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
> state UP qlen 1000
> link/ether 00:16:3e:57:e7:0f brd ff:ff:ff:ff:ff:ff
> inet 23.23.95.220/8 brd 23.255.255.255 scope global eth0
>
>
>
>
> Am I missing something or those machines dont have a chance to see each other ?
>
> regards
> WZ
>
> --
> Wojciech Ziniewicz
> http://rfc.sunsite.dk/rfc/rfc2324.html
>
--
Wojciech Ziniewicz
http://rfc.sunsite.dk/rfc/rfc2324.html
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