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Md Mooktakim Ahmed

2006-Mar-23 23:38 UTC

[Xen-users] network-route and vif-route setup help

Hello,

I have a dedicated server with 1and1.co.uk. Worst mistake i made. But
i''ve committed to
this now.
What i have is a dedicated server with centos 4.2 installed.

I install Xen 3.0 from the redhat installer. it installs fine. I boot into xen.
But i
loose my internet connection.

It seems 1and1 drops my network whenever the switch sees a MAC address other
then my
eth0''s MAC address. So bridge network is not possible.

I did try network-route and it boots up fine. I still have my internet
connection. But
the problem is my IP''s.

It seems 1and1 won''t sell me a subnet of IP''s. When i want an
ip they will give me a
random ip. They are not continious range. So thats another problem.

The problem with network-route is that there is no documentation (atleast i
couldn''t
find any). There are some information in the mailing lists.

What i want is for each domU''s to have their own public IP''s.
i want to install a
firewall in dom0 and block everything except ssh.
I tried shorewall.

i can create an alias interface with an IP that i own.

Since there isn''t much howto''s on network-route i
don''t exactly know what should go in
each domU''s configs. I want to specify an IP for each domU. I also want
to set the
gateway.

my network is a bit strange. My IP is 82.165.27.12 for dom0. but the gateway is
10.255.255.1. the netmask is 255.255.255.255.
This works for dom0.

But when i try to add the default gatway to 10.255.255.1 on one of the domU i
get
network is unreachable.

I really don''t know what to do here.
I would like to be able to run few domU''s.
I would appreciate any help.
Thank you.


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http://lists.xensource.com/xen-users

Yura Pismerov

2006-Mar-24 00:49 UTC

head link

Re: [Xen-users] network-route and vif-route setup help

Ask them if they could give you a set of IPs from the same subnet.
It does not have to be a continuous block, but it has to be a set from
82.165.27/24 (or whatever subnet they use).
Then you could assign those IPs as alias interfaces to your primary
address (on the NIC), set up your domUs with IPs
form gray space (eg. 192.168.xxx.yyy) and try to use 1:1 NAT (via
iptables in dom0) from those internal addresses to the public ones.


Md Mooktakim Ahmed wrote:> Hello,
>
> I have a dedicated server with 1and1.co.uk. Worst mistake i made. But
i''ve committed to
> this now.
> What i have is a dedicated server with centos 4.2 installed.
>
> I install Xen 3.0 from the redhat installer. it installs fine. I boot into
xen. But i
> loose my internet connection.
>
> It seems 1and1 drops my network whenever the switch sees a MAC address
other then my
> eth0''s MAC address. So bridge network is not possible.
>
> I did try network-route and it boots up fine. I still have my internet
connection. But
> the problem is my IP''s.
>
> It seems 1and1 won''t sell me a subnet of IP''s. When i
want an ip they will give me a
> random ip. They are not continious range. So thats another problem.
>
> The problem with network-route is that there is no documentation (atleast i
couldn''t
> find any). There are some information in the mailing lists.
>
> What i want is for each domU''s to have their own public
IP''s. i want to install a
> firewall in dom0 and block everything except ssh.
> I tried shorewall.
>
> i can create an alias interface with an IP that i own.
>
> Since there isn''t much howto''s on network-route i
don''t exactly know what should go in
> each domU''s configs. I want to specify an IP for each domU. I also
want to set the
> gateway.
>
> my network is a bit strange. My IP is 82.165.27.12 for dom0. but the
gateway is
> 10.255.255.1. the netmask is 255.255.255.255.
> This works for dom0.
>
> But when i try to add the default gatway to 10.255.255.1 on one of the domU
i get
> network is unreachable.
>
> I really don''t know what to do here.
> I would like to be able to run few domU''s.
> I would appreciate any help.
> Thank you.
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>   

-- 
Yuri Pismerov, System Administrator
Armor Technologies (Canada) Inc.

P: 905 305 1946 (x.3519)
http://www.armorware.net

Privacy Protection Guaranteed!





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Jason

2006-Mar-24 02:52 UTC

head link

Re: [Xen-users] network-route and vif-route setup help

Your default route for your 82.x network is a 10.x address?  What is the subnet
mask of that 82.x
network?

-- 
Jason
The place where you made your stand never mattered,
only that you were there... and still on your feet

On Thu, 23 Mar 2006, Md Mooktakim Ahmed wrote:
> Hello,
>
> I have a dedicated server with 1and1.co.uk. Worst mistake i made. But
i''ve committed to
> this now.
> What i have is a dedicated server with centos 4.2 installed.
>
> I install Xen 3.0 from the redhat installer. it installs fine. I boot into
xen. But i
> loose my internet connection.
>
> It seems 1and1 drops my network whenever the switch sees a MAC address
other then my
> eth0''s MAC address. So bridge network is not possible.
>
> I did try network-route and it boots up fine. I still have my internet
connection. But
> the problem is my IP''s.
>
> It seems 1and1 won''t sell me a subnet of IP''s. When i
want an ip they will give me a
> random ip. They are not continious range. So thats another problem.
>
> The problem with network-route is that there is no documentation (atleast i
couldn''t
> find any). There are some information in the mailing lists.
>
> What i want is for each domU''s to have their own public
IP''s. i want to install a
> firewall in dom0 and block everything except ssh.
> I tried shorewall.
>
> i can create an alias interface with an IP that i own.
>
> Since there isn''t much howto''s on network-route i
don''t exactly know what should go in
> each domU''s configs. I want to specify an IP for each domU. I also
want to set the
> gateway.
>
> my network is a bit strange. My IP is 82.165.27.12 for dom0. but the
gateway is
> 10.255.255.1. the netmask is 255.255.255.255.
> This works for dom0.
>
> But when i try to add the default gatway to 10.255.255.1 on one of the domU
i get
> network is unreachable.
>
> I really don''t know what to do here.
> I would like to be able to run few domU''s.
> I would appreciate any help.
> Thank you.
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
_______________________________________________
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http://lists.xensource.com/xen-users

Ralf Steenbock

2006-Mar-24 09:59 UTC

head link

Re: [Xen-users] network-route and vif-route setup help

Hello,

Md Mooktakim Ahmed schrieb:
>It seems 1and1 drops my network whenever the switch sees a MAC address other
then my
>eth0''s MAC address. So bridge network is not possible.
>
>I did try network-route and it boots up fine. I still have my internet
connection. But
>the problem is my IP''s.
>  
>I had the same problems with my new provider a few days ago. For me it
is working when I set

echo 1 >/proc/sys/net/ipv4/ip_forward
echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp

in /etc/xen/scripts/network-route. /etc/xen/scripts/vif-route is
unchanged. domUs have to be configured with the public IPs you got from
your provider like the following:

vif = [ ''ip=your.public.domu.ip'' ]
ip="your.public.domu.ip"
netmask="your.domu.net.mask"
gateway="your.providers.gateway.ip"

After restarting you should see a line like the following in the output
of "ip r" in your dom0:

your.public.domu.ip dev vif1  scope link  src your.public.dom0.ip

I hope that I did not forget anything.
Good luck

Ralf

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Andreas Jellinghaus

2006-Mar-24 10:07 UTC

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[Xen-users] Re: network-route and vif-route setup help

Md Mooktakim Ahmed wrote:> I did try network-route and it boots up fine. I still have my internet
> connection. But the problem is my IP''s.
> 
> It seems 1and1 won''t sell me a subnet of IP''s. When i
want an ip they will
> give me a random ip. They are not continious range. So thats another
> problem.
why? use proxy arp, so your machine accepts the ips on the local interface,
and then use point to point configuration with your xen0 ip on all
interfaces on xen0 and point to point routes for each xenU''s domain.
the xenU would simply have it''s own ip point to point xen0 ip which
it would use as default gateway.

no need to use networks at all, only point to point stuff. I guess your
1and1 upstream is also some ip with pointopoint config.
> my network is a bit strange. My IP is 82.165.27.12 for dom0. but the
> gateway is 10.255.255.1. the netmask is 255.255.255.255.
> This works for dom0.
yes, normal hosting provider config. you only have an ip, and you have
a default gateway pointopoint''ed.
> But when i try to add the default gatway to 10.255.255.1 on one of the
> domU i get network is unreachable.
no, the domU needs to use your dem0 ip as gateway in pointopoint fashion.

Good luck!

Regards, Andreas


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Steffen Heil

2006-Mar-24 10:18 UTC

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RE: [Xen-users] network-route and vif-route setup help

Hi
> It seems 1and1 drops my network whenever the switch sees a 
> MAC address other then my eth0''s MAC address. So bridge 
> network is not possible.
Wrong.

First, it should work perfectly as long as only dom0 is up.
(dom0 should get the MAC of your peth0.)

Then you can use ebtables to rewrite packets on peth0,
so that 1and1 only sees ONE MAC.
I have done this for 3 IPs:

Bridge chain: PREROUTING, entries: 6, policy: ACCEPT
-p IPv4 -d $mac -i peth0 --ip-dst $2 -j dnat --to-dst 0:16:3e:0:16:1
-p ARP -d $mac -i peth0 --arp-ip-dst $2 -j dnat --to-dst 0:16:3e:0:16:1
-p IPv4 -d $mac -i peth0 --ip-dst $3 -j dnat --to-dst 0:16:3e:0:16:2
-p ARP -d $mac -i peth0 --arp-ip-dst $3 -j dnat --to-dst 0:16:3e:0:16:2
-p IPv4 -d $mac -i peth0 --ip-dst $4 -j dnat --to-dst 0:16:3e:0:16:3
-p ARP -d $mac -i peth0 --arp-ip-dst $4 -j dnat --to-dst 0:16:3e:0:16:3

Bridge chain: OUTPUT, entries: 0, policy: ACCEPT

Bridge chain: POSTROUTING, entries: 6, policy: ACCEPT
-p IPv4 -s 0:16:3e:0:16:1 -o peth0 --ip-src $2 -j snat --to-src $mac
-p ARP -s 0:16:3e:0:16:1 -o peth0 --arp-ip-src $2 -j snat --to-src $mac
-p IPv4 -s 0:16:3e:0:16:2 -o peth0 --ip-src $3 -j snat --to-src $mac
-p ARP -s 0:16:3e:0:16:2 -o peth0 --arp-ip-src $3 -j snat --to-src $mac
-p IPv4 -s 0:16:3e:0:16:3 -o peth0 --ip-src $4 -j snat --to-src $mac
-p ARP -s 0:16:3e:0:16:3 -o peth0 --arp-ip-src $4 -j snat --to-src $mac

And I boot my domUs with

ip = $2, mac = 00:16:3e:00:16:01
ip = $3, mac = 00:16:3e:00:16:02
ip = $4, mac = 00:16:3e:00:16:03

works perfectly.
> my network is a bit strange. My IP is 82.165.27.12 for dom0. 
> but the gateway is 10.255.255.1. the netmask is 255.255.255.255.
> This works for dom0.
this is really a bit strange, as the system should have no idea in that case
how to reach the gateway.

I have simmilar problems, as I also have IPs in different subnets.
That means, that in my original setup, every traffic between my doms is
going through the providers router. Hence nonsense.
But I am going to solve this another way:

I will give the dom0 and every domU a second IP in the same 10.x.x.x
network. Packets to and from 10.x.x.x will be dropped at peth0.
Then I will add routes manually to route the public ip of any dom over the
private ip of that dom.
The doms can then reach each other over their private AND public ips
directly.
(And I can attach an tap device using openvpn to connect my own computer to
that bridge for administration.)

Regards,
  Steffen


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Md Mooktakim Ahmed

2006-Mar-28 21:24 UTC

head link

Re: [Xen-users] network-route and vif-route setup help

Sorry about the delay everyone. I had some email troubles for the last week. its
all
back to normal now.

Jason: The subnet for all my ip''s is 255.255.255.255

Yura Pismerov: If i use 1:1 NAT, then from inside the domU''s i will
have to have a
different IP''s then outside. i would like to have the same
ip''s as outside if thats
possible.

Andreas Jellinghaus: I never heard of point to point. I don''t know what
it is. All the
information i could find in google wasn''t too helpful, lots of ppp or
PPPoE stuff. I did
find it in ifconfig man page though. Is there a howto anywhere? especially with
xen?
Or maybe you could write a small howto maybe?

Steffen Heil: with 1and1 i get disconnect when i start xend. Which means dom0
doesn''t
even get a chance to work. So all the domU''s don''t work
either. I think xend start the
bridge with FFFFFFFFFFFF as MAC and then does a transfer. I think thats what
kills the
connection. the switch drops the connection whenever it seems a different MAC. I
have
read about ebtables though. reading as many howto''s on it as i can.

Ralf Steenbock: Your reply seems promising. So I''ll paste it here
again:
> I had the same problems with my new provider a few days ago. For me it
> is working when I set
>
> echo 1 >/proc/sys/net/ipv4/ip_forward
> echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp
>
> in /etc/xen/scripts/network-route. /etc/xen/scripts/vif-route is
> unchanged. domUs have to be configured with the public IPs you got from
> your provider like the following:
>
> vif = [ ''ip=your.public.domu.ip'' ]
> ip="your.public.domu.ip"
> netmask="your.domu.net.mask"
> gateway="your.providers.gateway.ip"
>
> After restarting you should see a line like the following in the output
> of "ip r" in your dom0:
>
> your.public.domu.ip dev vif1  scope link  src your.public.dom0.ip
>
> I hope that I did not forget anything.
> Good luck
>
> Ralf
what i don''t understand is the "ip r" output. the src part.
In the config the src ip
address wasn''t specified. So does this get generated automatically? or
did you mean
public.dom0 for the ip= (not the one in vif)?

Once again, thanks to everyone who replied.
And sorry for the delay in reply, totally unintentional.

On Fri, March 24, 2006 3:52 am, Jason wrote:> Your default route for your 82.x network is a 10.x address?  What is the
subnet mask of
> that 82.x network?
>
> --
> Jason
> The place where you made your stand never mattered,
> only that you were there... and still on your feet
>
> On Thu, 23 Mar 2006, Md Mooktakim Ahmed wrote:
>
>
>> Hello,
>>
>>
>> I have a dedicated server with 1and1.co.uk. Worst mistake i made. But
i''ve committed
>> to this now. What i have is a dedicated server with centos 4.2
installed.
>>
>>
>> I install Xen 3.0 from the redhat installer. it installs fine. I boot
into xen. But i
>>  loose my internet connection.
>>
>> It seems 1and1 drops my network whenever the switch sees a MAC address
other then my
>> eth0''s MAC address. So bridge network is not possible.
>>
>> I did try network-route and it boots up fine. I still have my internet
connection.
>> But
>> the problem is my IP''s.
>>
>> It seems 1and1 won''t sell me a subnet of IP''s. When i
want an ip they will give me a
>> random ip. They are not continious range. So thats another problem.
>>
>> The problem with network-route is that there is no documentation
(atleast i couldn''t
>> find any). There are some information in the mailing lists.
>>
>> What i want is for each domU''s to have their own public
IP''s. i want to install a
>> firewall in dom0 and block everything except ssh. I tried shorewall.
>>
>>
>> i can create an alias interface with an IP that i own.
>>
>> Since there isn''t much howto''s on network-route i
don''t exactly know what should go
>> in each domU''s configs. I want to specify an IP for each domU.
I also want to set the
>> gateway.
>>
>> my network is a bit strange. My IP is 82.165.27.12 for dom0. but the
gateway is
>> 10.255.255.1. the netmask is 255.255.255.255.
>> This works for dom0.
>>
>>
>> But when i try to add the default gatway to 10.255.255.1 on one of the
domU i get
>> network is unreachable.
>>
>> I really don''t know what to do here.
>> I would like to be able to run few domU''s.
>> I would appreciate any help.
>> Thank you.
>>
>>
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@lists.xensource.com
>> http://lists.xensource.com/xen-users
>>
>>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
>
>

--
Website: http://www.mooktakim.com
email: mma@mooktakim.com


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Md Mooktakim Ahmed

2006-Mar-28 22:13 UTC

head link

Re: [Xen-users] network-route and vif-route setup help

I just tried what you said below. I''m not sure if its working though. I
tried bridging
one more time and still disconnected from the network. waiting for 1and1 to
reconnect
me.
But i can access serial console.

So what i see is this, ifconfig says:
[root@cyclops ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:40:CA:80:5B:80
          inet addr:82.165.27.12  Bcast:82.165.27.12  Mask:255.255.255.255
          inet6 addr: fe80::240:caff:fe80:5b80/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:23 Base address:0xe000

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:48 errors:0 dropped:0 overruns:0 frame:0
          TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:4360 (4.2 KiB)  TX bytes:4360 (4.2 KiB)

vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet addr:82.165.27.12  Bcast:82.165.27.12  Mask:255.255.255.255
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:10 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:5 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:588 (588.0 b)  TX bytes:0 (0.0 b)


82.165.27.12 is my main IP. vif1.0 seems to have been assigned the same ip.
which probably makes sense because of what ip r says:
[root@cyclops ~]# ip r
82.165.37.144 dev vif1.0  scope link  src 82.165.27.12
169.254.0.0/16 dev eth0  scope link
default via 10.255.255.1 dev eth0

37.144 is my domU ip. not sure exactly whats going on. but it probably means
vif1.0 is
connected on 144? no idea.

and what i have in my domU config:
vif = [ ''ip=82.165.37.144'' ]
ip = "82.165.37.144"
netmask="255.255.255.255"
gateway="10.255.255.1"
#gateway="82.165.27.12"

the question is here do i use my isp''s gateway? (10.*) the one for
dom0?
OR do i use dom0 itself? since we are routing i should use dom0?
I tried both. the ifconfig and ip r output is the same.

and lastly i used centos for domU too. so my
/etc/sysconfig/network-scripts/ifcfg-eth0 is:
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=82.165.37.144
NETMASK=255.255.255.255
GATEWAY=10.255.255.1

Is everything correct here?
I will send another email detailing if it worked when my connection was
reinstated.

Ralf Steenbock:
> I had the same problems with my new provider a few days ago. For me it
> is working when I set
>
> echo 1 >/proc/sys/net/ipv4/ip_forward
> echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp
>
> in /etc/xen/scripts/network-route. /etc/xen/scripts/vif-route is
> unchanged. domUs have to be configured with the public IPs you got from
> your provider like the following:
>
> vif = [ ''ip=your.public.domu.ip'' ]
> ip="your.public.domu.ip"
> netmask="your.domu.net.mask"
> gateway="your.providers.gateway.ip"
>
> After restarting you should see a line like the following in the output
> of "ip r" in your dom0:
>
> your.public.domu.ip dev vif1  scope link  src your.public.dom0.ip
>
> I hope that I did not forget anything.
> Good luck
>
> Ralf

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Md Mooktakim Ahmed

2006-Mar-29 00:25 UTC

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Re: [Xen-users] network-route and vif-route setup help

I got my connection back. It doesn''t work.

-bash-3.00# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:3E:7D:2B:63
          inet addr:82.165.37.144  Bcast:82.165.37.144  Mask:255.255.255.255
          inet6 addr: fe80::216:3eff:fe7d:2b63/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 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:0 (0.0 b)  TX bytes:756 (756.0 b)

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:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

and ip r:
-bash-3.00# ip r
169.254.0.0/16 dev eth0  scope link

if i try to add my own default route:
-bash-3.00# ip route replace default via 10.255.255.1
RTNETLINK answers: Network is unreachable

and even if i use dom0 as default route:
-bash-3.00# ip route replace default via 82.165.27.12
RTNETLINK answers: Network is unreachable


I just don''t know what to do now.

On Tue, March 28, 2006 11:13 pm, Md Mooktakim Ahmed
wrote:> I just tried what you said below. I''m not sure if its working
though. I tried bridging
> one more time and still disconnected from the network. waiting for 1and1 to
reconnect me.
>  But i can access serial console.
>
>
> So what i see is this, ifconfig says:
> [root@cyclops ~]# ifconfig
> eth0      Link encap:Ethernet  HWaddr 00:40:CA:80:5B:80 inet
addr:82.165.27.12
> Bcast:82.165.27.12  Mask:255.255.255.255
> inet6 addr: fe80::240:caff:fe80:5b80/64 Scope:Link UP BROADCAST MULTICAST 
MTU:1500
> Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
> Interrupt:23 Base address:0xe000
>
>
> 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:48 errors:0 dropped:0 overruns:0 frame:0
> TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:4360 (4.2 KiB)  TX bytes:4360 (4.2 KiB)
>
>
> vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF inet
addr:82.165.27.12
> Bcast:82.165.27.12  Mask:255.255.255.255
> inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING
MULTICAST
> MTU:1500  Metric:1
> RX packets:10 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:5 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:588 (588.0 b)  TX bytes:0 (0.0 b)
>
>
>
> 82.165.27.12 is my main IP. vif1.0 seems to have been assigned the same ip.
> which probably makes sense because of what ip r says: [root@cyclops ~]# ip
r
> 82.165.37.144 dev vif1.0  scope link  src 82.165.27.12
> 169.254.0.0/16 dev eth0  scope link
> default via 10.255.255.1 dev eth0
>
> 37.144 is my domU ip. not sure exactly whats going on. but it probably
means vif1.0 is
> connected on 144? no idea.
>
> and what i have in my domU config: vif = [
''ip=82.165.37.144'' ] ip = "82.165.37.144"
> netmask="255.255.255.255" gateway="10.255.255.1"
#gateway="82.165.27.12"
>
>
> the question is here do i use my isp''s gateway? (10.*) the one for
dom0? OR do i use
> dom0 itself? since we are routing i should use dom0? I tried both. the
ifconfig and ip r
> output is the same.
>
> and lastly i used centos for domU too. so my
/etc/sysconfig/network-scripts/ifcfg-eth0
> is:
> DEVICE=eth0
> ONBOOT=yes
> BOOTPROTO=static
> IPADDR=82.165.37.144
> NETMASK=255.255.255.255
> GATEWAY=10.255.255.1
>
>
> Is everything correct here?
> I will send another email detailing if it worked when my connection was
reinstated.
>
>
> Ralf Steenbock:
>
>
>> I had the same problems with my new provider a few days ago. For me it
>> is working when I set
>>
>> echo 1 >/proc/sys/net/ipv4/ip_forward echo 1 >
/proc/sys/net/ipv4/conf/eth0/proxy_arp
>>
>> in /etc/xen/scripts/network-route. /etc/xen/scripts/vif-route is
unchanged. domUs have
>> to be configured with the public IPs you got from your provider like
the following:
>>
>> vif = [ ''ip=your.public.domu.ip'' ]
ip="your.public.domu.ip"
>> netmask="your.domu.net.mask"
gateway="your.providers.gateway.ip"
>>
>> After restarting you should see a line like the following in the output
>> of "ip r" in your dom0:
>>
>> your.public.domu.ip dev vif1  scope link  src your.public.dom0.ip
>>
>> I hope that I did not forget anything.
>> Good luck
>>
>>
>> Ralf
>>
>

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Randy Thelen

2006-Mar-29 00:44 UTC

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Re: [Xen-users] network-route and vif-route setup help

Md Mooktakim Ahmed wrote:
> inet addr:82.165.27.12  Bcast:82.165.27.12  Mask:255.255.255.255
I doubt your net mask.  It''s far more likely that your mask is  
255.255.255.0, but only your network provider can specify that for sure.

You need to double check your mask.

-- Randy

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Md Mooktakim Ahmed

2006-Mar-29 06:38 UTC

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Re: [Xen-users] network-route and vif-route setup help

Thats is what the netmask they gave me when i asked.

On Wed, March 29, 2006 1:44 am, Randy Thelen wrote:> Md Mooktakim Ahmed wrote:
>
>
>> inet addr:82.165.27.12  Bcast:82.165.27.12  Mask:255.255.255.255
>
> I doubt your net mask.  It''s far more likely that your mask is
> 255.255.255.0, but only your network provider can specify that for sure.
>
>
> You need to double check your mask.
>
>
> -- Randy
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
>
>

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Ralf Steenbock

2006-Mar-29 09:43 UTC

head link

Re: [Xen-users] network-route and vif-route setup help

Hello,
>So what i see is this, ifconfig says:
>[root@cyclops ~]# ifconfig
>eth0      Link encap:Ethernet  HWaddr 00:40:CA:80:5B:80
>          inet addr:82.165.27.12  Bcast:82.165.27.12  Mask:255.255.255.255
>          inet6 addr: fe80::240:caff:fe80:5b80/64 Scope:Link
>          UP BROADCAST MULTICAST  MTU:1500  Metric:1
>          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>          Interrupt:23 Base address:0xe000
>
>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:48 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:0
>          RX bytes:4360 (4.2 KiB)  TX bytes:4360 (4.2 KiB)
>
>vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
>          inet addr:82.165.27.12  Bcast:82.165.27.12  Mask:255.255.255.255
>          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          RX packets:10 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:0 errors:0 dropped:5 overruns:0 carrier:0
>          collisions:0 txqueuelen:0
>          RX bytes:588 (588.0 b)  TX bytes:0 (0.0 b)
>
>
>82.165.27.12 is my main IP. vif1.0 seems to have been assigned the same ip.
>which probably makes sense because of what ip r says:
>[root@cyclops ~]# ip r
>82.165.37.144 dev vif1.0  scope link  src 82.165.27.12
>169.254.0.0/16 dev eth0  scope link
>default via 10.255.255.1 dev eth0
>
>37.144 is my domU ip. not sure exactly whats going on. but it probably means
vif1.0 is
>connected on 144? no idea.
>
>and what i have in my domU config:
>vif = [ ''ip=82.165.37.144'' ]
>ip = "82.165.37.144"
>netmask="255.255.255.255"
>gateway="10.255.255.1"
>#gateway="82.165.27.12"
>
>the question is here do i use my isp''s gateway? (10.*) the one for
dom0?
>OR do i use dom0 itself? since we are routing i should use dom0?
>I tried both. the ifconfig and ip r output is the same.
>
>and lastly i used centos for domU too. so my
/etc/sysconfig/network-scripts/ifcfg-eth0 is:
>DEVICE=eth0
>ONBOOT=yes
>BOOTPROTO=static
>IPADDR=82.165.37.144
>NETMASK=255.255.255.255
>GATEWAY=10.255.255.1
>
>Is everything correct here?
>This looks quite similar to my config. This way your domu mac should not
be visible to the switch.
Did you put

echo 1 >/proc/sys/net/ipv4/ip_forward
echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp

into /etc/xen/scripts/network-route ?

It is absolutely necessary, because otherwise the server will not
forward packets to domu (first line) and not answer to arp request for
the ip of domu (second line).
Try it again and play with your network settings in domu ("xm console
xxx" with xxx as id of your domu). What is the output of
"ifconfig" and
"ip r" in domu?

-- 
Dipl.-Ing. Ralf Steenbock -- EDV-Systementwicklung
Weg am Kötterberg 39, D-44807 Bochum
Tel.:  +49 (0)234 3252043 / +49 (0)177 7550868
www:   <http://www.openlogic.de>


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Md Mooktakim Ahmed

2006-Mar-29 18:06 UTC

head link

Re: [Xen-users] network-route and vif-route setup help

Here is the output of my domU:
-bash-3.00# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:3E:7D:2B:63
          inet addr:82.165.37.144  Bcast:82.165.37.144  Mask:255.255.255.255
          inet6 addr: fe80::216:3eff:fe7d:2b63/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 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:0 (0.0 b)  TX bytes:756 (756.0 b)

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:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

-bash-3.00# ip r
169.254.0.0/16 dev eth0  scope link

as you can see the route isn''t correct i don''t think. and i
can''t add my own route:
-bash-3.00# ip route replace default via 82.165.27.12
RTNETLINK answers: Network is unreachable
-bash-3.00# ip route replace default via 10.255.255.1
RTNETLINK answers: Network is unreachable


I have edited the network-route file:
[root@cyclops ~]# cat /etc/xen/scripts/network-route
#!/bin/sh
#===========================================================================#
Default Xen network start/stop script.
# Xend calls a network script when it starts.
# The script name to use is defined in /etc/xen/xend-config.sxp
# in the network-script field.
#
# Usage:
#
# network-route (start|stop|status) {VAR=VAL}*
#
# Vars:
#
# netdev     The gateway interface (default eth0).
# antispoof  Whether to use iptables to prevent spoofing (default yes).
#
#===========================================================================
echo 1 >/proc/sys/net/ipv4/ip_forward
echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp

I am out of ideas.

On Wed, March 29, 2006 10:43 am, Ralf Steenbock wrote:> Hello,
>
>
>> So what i see is this, ifconfig says:
>> [root@cyclops ~]# ifconfig
>> eth0      Link encap:Ethernet  HWaddr 00:40:CA:80:5B:80 inet
addr:82.165.27.12
>> Bcast:82.165.27.12  Mask:255.255.255.255
>> inet6 addr: fe80::240:caff:fe80:5b80/64 Scope:Link UP BROADCAST
MULTICAST  MTU:1500
>> Metric:1
>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>> Interrupt:23 Base address:0xe000
>>
>>
>> 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:48 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:0
>> RX bytes:4360 (4.2 KiB)  TX bytes:4360 (4.2 KiB)
>>
>>
>> vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF inet
addr:82.165.27.12
>> Bcast:82.165.27.12  Mask:255.255.255.255
>> inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST
RUNNING MULTICAST
>> MTU:1500  Metric:1
>> RX packets:10 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:0 errors:0 dropped:5 overruns:0 carrier:0
>> collisions:0 txqueuelen:0
>> RX bytes:588 (588.0 b)  TX bytes:0 (0.0 b)
>>
>>
>>
>> 82.165.27.12 is my main IP. vif1.0 seems to have been assigned the same
ip.
>> which probably makes sense because of what ip r says: [root@cyclops ~]#
ip r
>> 82.165.37.144 dev vif1.0  scope link  src 82.165.27.12
>> 169.254.0.0/16 dev eth0  scope link
>> default via 10.255.255.1 dev eth0
>>
>> 37.144 is my domU ip. not sure exactly whats going on. but it probably
means vif1.0
>> is connected on 144? no idea.
>>
>> and what i have in my domU config: vif = [
''ip=82.165.37.144'' ] ip = "82.165.37.144"
>> netmask="255.255.255.255" gateway="10.255.255.1"
#gateway="82.165.27.12"
>>
>>
>> the question is here do i use my isp''s gateway? (10.*) the one
for dom0? OR do i use
>> dom0 itself? since we are routing i should use dom0? I tried both. the
ifconfig and ip
>> r output is the same.
>>
>> and lastly i used centos for domU too. so my
>> /etc/sysconfig/network-scripts/ifcfg-eth0 is:
>> DEVICE=eth0
>> ONBOOT=yes
>> BOOTPROTO=static
>> IPADDR=82.165.37.144
>> NETMASK=255.255.255.255
>> GATEWAY=10.255.255.1
>>
>>
>> Is everything correct here?
>>
>>
> This looks quite similar to my config. This way your domu mac should not
> be visible to the switch. Did you put
>
>
> echo 1 >/proc/sys/net/ipv4/ip_forward echo 1 >
/proc/sys/net/ipv4/conf/eth0/proxy_arp
>
> into /etc/xen/scripts/network-route ?
>
> It is absolutely necessary, because otherwise the server will not
> forward packets to domu (first line) and not answer to arp request for the
ip of domu
> (second line).
> Try it again and play with your network settings in domu ("xm console
> xxx" with xxx as id of your domu). What is the output of
"ifconfig" and "ip r" in domu?
>
>
> --
> Dipl.-Ing. Ralf Steenbock -- EDV-Systementwicklung
> Weg am Kötterberg 39, D-44807 Bochum
> Tel.:  +49 (0)234 3252043 / +49 (0)177 7550868
> www:   <http://www.openlogic.de>
>
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
>
>

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Mooktakim Ahmed

2006-Mar-30 17:43 UTC

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Re: [Xen-users] network-route and vif-route setup help

No one has any idea how to solve this?


Md Mooktakim Ahmed wrote:> 
> Here is the output of my domU:
> -bash-3.00# ifconfig
> eth0      Link encap:Ethernet  HWaddr 00:16:3E:7D:2B:63
>           inet addr:82.165.37.144  Bcast:82.165.37.144 
> Mask:255.255.255.255
>           inet6 addr: fe80::216:3eff:fe7d:2b63/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 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:0 (0.0 b)  TX bytes:756 (756.0 b)
> 
> 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:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
> 
> -bash-3.00# ip r
> 169.254.0.0/16 dev eth0  scope link
> 
> as you can see the route isn''t correct i don''t think. and
i can''t add my
> own route:
> -bash-3.00# ip route replace default via 82.165.27.12
> RTNETLINK answers: Network is unreachable
> -bash-3.00# ip route replace default via 10.255.255.1
> RTNETLINK answers: Network is unreachable
> 
> 
> I have edited the network-route file:
> [root@cyclops ~]# cat /etc/xen/scripts/network-route
> #!/bin/sh
>
#===========================================================================>
# Default Xen network start/stop script.
> # Xend calls a network script when it starts.
> # The script name to use is defined in /etc/xen/xend-config.sxp
> # in the network-script field.
> #
> # Usage:
> #
> # network-route (start|stop|status) {VAR=VAL}*
> #
> # Vars:
> #
> # netdev     The gateway interface (default eth0).
> # antispoof  Whether to use iptables to prevent spoofing (default yes).
> #
>
#===========================================================================>
> echo 1 >/proc/sys/net/ipv4/ip_forward
> echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp
> 
> I am out of ideas.
> 
> On Wed, March 29, 2006 10:43 am, Ralf Steenbock wrote:
>> Hello,
>>
>>
>>> So what i see is this, ifconfig says:
>>> [root@cyclops ~]# ifconfig
>>> eth0      Link encap:Ethernet  HWaddr 00:40:CA:80:5B:80 inet
>>> addr:82.165.27.12
>>> Bcast:82.165.27.12  Mask:255.255.255.255
>>> inet6 addr: fe80::240:caff:fe80:5b80/64 Scope:Link UP BROADCAST
>>> MULTICAST  MTU:1500
>>> Metric:1
>>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>>> collisions:0 txqueuelen:1000
>>> RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>>> Interrupt:23 Base address:0xe000
>>>
>>>
>>> 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:48 errors:0 dropped:0 overruns:0 frame:0
>>> TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
>>> collisions:0 txqueuelen:0
>>> RX bytes:4360 (4.2 KiB)  TX bytes:4360 (4.2 KiB)
>>>
>>>
>>> vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF inet
>>> addr:82.165.27.12
>>> Bcast:82.165.27.12  Mask:255.255.255.255
>>> inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST
RUNNING
>>> MULTICAST
>>> MTU:1500  Metric:1
>>> RX packets:10 errors:0 dropped:0 overruns:0 frame:0
>>> TX packets:0 errors:0 dropped:5 overruns:0 carrier:0
>>> collisions:0 txqueuelen:0
>>> RX bytes:588 (588.0 b)  TX bytes:0 (0.0 b)
>>>
>>>
>>>
>>> 82.165.27.12 is my main IP. vif1.0 seems to have been assigned the
same
>>> ip.
>>> which probably makes sense because of what ip r says: [root@cyclops
~]#
>>> ip r
>>> 82.165.37.144 dev vif1.0  scope link  src 82.165.27.12
>>> 169.254.0.0/16 dev eth0  scope link
>>> default via 10.255.255.1 dev eth0
>>>
>>> 37.144 is my domU ip. not sure exactly whats going on. but it
probably
>>> means vif1.0
>>> is connected on 144? no idea.
>>>
>>> and what i have in my domU config: vif = [
''ip=82.165.37.144'' ] ip >>> "82.165.37.144"
>>> netmask="255.255.255.255"
gateway="10.255.255.1" #gateway="82.165.27.12"
>>>
>>>
>>> the question is here do i use my isp''s gateway? (10.*) the
one for dom0?
>>> OR do i use
>>> dom0 itself? since we are routing i should use dom0? I tried both.
the
>>> ifconfig and ip
>>> r output is the same.
>>>
>>> and lastly i used centos for domU too. so my
>>> /etc/sysconfig/network-scripts/ifcfg-eth0 is:
>>> DEVICE=eth0
>>> ONBOOT=yes
>>> BOOTPROTO=static
>>> IPADDR=82.165.37.144
>>> NETMASK=255.255.255.255
>>> GATEWAY=10.255.255.1
>>>
>>>
>>> Is everything correct here?
>>>
>>>
>> This looks quite similar to my config. This way your domu mac should
not
>> be visible to the switch. Did you put
>>
>>
>> echo 1 >/proc/sys/net/ipv4/ip_forward echo 1 >
>> /proc/sys/net/ipv4/conf/eth0/proxy_arp
>>
>> into /etc/xen/scripts/network-route ?
>>
>> It is absolutely necessary, because otherwise the server will not
>> forward packets to domu (first line) and not answer to arp request for
>> the ip of domu
>> (second line).
>> Try it again and play with your network settings in domu ("xm
console
>> xxx" with xxx as id of your domu). What is the output of
"ifconfig" and
>> "ip r" in domu?
>>
>>
>> --
>> Dipl.-Ing. Ralf Steenbock -- EDV-Systementwicklung
>> Weg am Kötterberg 39, D-44807 Bochum
>> Tel.:  +49 (0)234 3252043 / +49 (0)177 7550868
>> www:   <http://www.openlogic.de>
>>
>>
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@lists.xensource.com
>> http://lists.xensource.com/xen-users
>>
>>
>>
> 
> 
> -- 
> Website: http://www.mooktakim.com
> email: mma@mooktakim.com
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 
> --
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Molle Bestefich

2006-Mar-30 17:55 UTC

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Re: [Xen-users] network-route and vif-route setup help

Mooktakim Ahmed wrote:> No one has any idea how to solve this?
Change the subnet mask ;-).

Seriously, 255.255.255.255 sounds odd.
The smallest usable subnet is 255.255.255.252.  Seeing as the lower IP
address in the subnet designates the network itself, and the highest
IP in the subnet is per definition the broadcast address,
255.255.255.254 doesn''t seem usable, and 255.255.255.255 certainly
doesn''t.

I''m not an expert, so take it with a grain of salt.  I don''t
know what
your kernel does with it''s routing tables etc. when you choose
255.255.255.255, and I don''t know if perhaps you''re right and
you''ve
got the correct subnet mask.  But it definitely sounds very odd.

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Patrick Wolfe

2006-Mar-30 18:10 UTC

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Re: [Xen-users] network-route and vif-route setup help

On Wed, 2006-03-29 at 19:06 +0100, Md Mooktakim Ahmed
wrote:> -bash-3.00# ip route replace default via 82.165.27.12
> RTNETLINK answers: Network is unreachable
Since you are using netmask 255.255.255.255, you need to route to the
device, not to the ip address of the other end.  Try:

	ip route add default dev eth0


-- 
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Mooktakim Ahmed

2006-Mar-30 18:13 UTC

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Re: [Xen-users] network-route and vif-route setup help

i believe 255.255.255.255 means itself and thats all. No other hosts.
it would mean the broadcast is same as the IP.
I just want to be able to use some IP''s (which are not in a row) with
my
domU.

For example, i can start eth0:0 and eth0:1
Can i not assign one of these to a domU?


Molle Bestefich wrote:> 
> Mooktakim Ahmed wrote:
>> No one has any idea how to solve this?
> 
> Change the subnet mask ;-).
> 
> Seriously, 255.255.255.255 sounds odd.
> The smallest usable subnet is 255.255.255.252.  Seeing as the lower IP
> address in the subnet designates the network itself, and the highest
> IP in the subnet is per definition the broadcast address,
> 255.255.255.254 doesn''t seem usable, and 255.255.255.255 certainly
> doesn''t.
> 
> I''m not an expert, so take it with a grain of salt.  I
don''t know what
> your kernel does with it''s routing tables etc. when you choose
> 255.255.255.255, and I don''t know if perhaps you''re right
and you''ve
> got the correct subnet mask.  But it definitely sounds very odd.
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 
> --
View this message in context:
http://www.nabble.com/network-route-and-vif-route-setup-help-t1333567.html#a3675497
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Md Mooktakim Ahmed

2006-Mar-30 18:38 UTC

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Re: [Xen-users] network-route and vif-route setup help

Should i run this inside the domU? or dom0?

I''m guessing domU.

On Thu, March 30, 2006 7:10 pm, Patrick Wolfe wrote:> On Wed, 2006-03-29 at 19:06 +0100, Md Mooktakim Ahmed wrote:
>
>> -bash-3.00# ip route replace default via 82.165.27.12
>> RTNETLINK answers: Network is unreachable
>>
>
> Since you are using netmask 255.255.255.255, you need to route to the
> device, not to the ip address of the other end.  Try:
>
> ip route add default dev eth0
>
>
> --
> Patrick Wolfe  (pwolfe@employease.com)
>
>
>

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Mooktakim Ahmed

2006-Mar-30 19:08 UTC

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Re: [Xen-users] network-route and vif-route setup help

Incase the email didn''t go to the mailing list i will send it again.

Patrick Wolfe: YOU ARE A GENIUS!!> Since you are using netmask 255.255.255.255, you need to route to the
> device, not to the ip address of the other end.  Try:
>
>        ip route add default dev eth0
So thats what happened.

To summerise for everyone else.
I have a dedicated server. I can''t use bridged network becuase my ISP
drops
my network whenever the switch sees an unknown MAC.
So route is the way to go.

Here''s what i did:

modify /etc/xen/xend-config.sxp to make sure these are uncommented:
(network-script network-route)
(vif-script     vif-route)
comment our the bridge ones.

make sure you have in /etc/xen/scripts/network-route:
echo 1 >/proc/sys/net/ipv4/ip_forward
echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp

Setup your dom0 network like normal. You should set the default gateway.

My domU config looks like this (the important parts anyway):
vif = [ ''ip=domU_IP_HERE'' ]
ip = "domU_IP_HERE"
netmask="255.255.255.255"
gateway="dom0_gateway"

The gateway is the dom0 gateway. 

setup domU''s network so that it has the domU ip.
Then add default gateway:
ip route add default dev eth0

I put that line in /etc/sysconfig/network-scripts/ifcfg-eth0 for centos.

AND THATS IT!!! and it works.

Just ONE LAST question please.
If i install shorewall do i need to make any changes? like turn on routing
in shorewall.conf etc 
Please let me know. Also will it effect my domU''s if i install
shorewall in
my dom0?

Thanks to everyone for helping!!
--
View this message in context:
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Md Mooktakim Ahmed

2006-Mar-30 20:45 UTC

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Re: [Xen-users] network-route and vif-route setup help

Just have to setup shorewall now.
It seems the default 1 interface config bocks everything to the domU''s
i keep getting Destination Host Unreachable errors.

Has anyone setup shorwall with network-route before?

On Thu, March 30, 2006 8:43 pm, Ralf Steenbock wrote:> Hello,
>
>
>> Patrick Wolfe: YOU ARE A GENIUS!!
>>
>>
>>
>>> Since you are using netmask 255.255.255.255, you need to route to
the
>>> device, not to the ip address of the other end.  Try:
>>>
>>> ip route add default dev eth0
>>>
>>>
> I just came back home with exactly this idea... but Patrick was faster
> than me ;-)
>
> Congratulations!
>
>
> Cheers
>
>
> Ralf
>
>
>
>

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email: mma@mooktakim.com


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Xen users - Mar 2006 - network-route and vif-route setup help

[Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

[Xen-users] Re: network-route and vif-route setup help

RE: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help

Re: [Xen-users] network-route and vif-route setup help