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2 NICs in the frontservers to 2 dif. LANs

 

 

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nicolas.wild at pwrnet

May 28, 2002, 3:34 AM

Post #1 of 2 (1031 views)
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2 NICs in the frontservers to 2 dif. LANs

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Hi

I have a question to mod_backhand (or Wackamole?).

Mod_backhand manages that all virtual IP=B4s are attached to a running =
server. When one server fails a other takes over the IP.

In my case I have 2 NICs in the front-servers (2 front, 2 back) attached =
to diverent LANs (2 ISPs).
Each-Frontserver should only listen to one of the 2 ISP=B4s, if one =
machine crashes the alive machine should take over the IP to it=B4s =
second NIC.

Is that possible? I read that all works only with one network. Are the =
any docs about this? or perhaps a workaround?

Thanks

Nicolas

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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hi</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I have a question to mod_backhand (or =
<FONT=20
face=3D"Times New Roman" size=3D3>Wackamole</FONT>?).</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Mod_backhand manages that all virtual =
IP=B4s are=20
attached to&nbsp;a running server. When one server fails a other takes =
over the=20
IP.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>In my case I have 2 NICs in the=20
front-servers&nbsp;(2 front, 2 back)&nbsp;attached to diverent LANs (2=20
ISPs).</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Each-Frontserver should only listen to =
one of the 2=20
ISP=B4s, if one machine crashes the alive machine should take over the =
IP to it=B4s=20
second NIC.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Is that possible? I read that all works =
only with=20
one network. Are the any docs about this? or perhaps a =
workaround?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thanks</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Nicolas</FONT></DIV></BODY></HTML>

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jesus at omniti

May 28, 2002, 8:07 AM

Post #2 of 2 (971 views)
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2 NICs in the frontservers to 2 dif. LANs [In reply to]

Nicolas Wild - PWR Solutions wrote:

> Hi
>
> I have a question to mod_backhand (or Wackamole?).

Your question is about wackamole... and you should ask about it on the
wackamole user list instead of here.

> Mod_backhand manages that all virtual IPīs are attached to a running
> server. When one server fails a other takes over the IP.
>
> In my case I have 2 NICs in the front-servers (2 front, 2
> back) attached to diverent LANs (2 ISPs).
> Each-Frontserver should only listen to one of the 2 ISPīs, if one
> machine crashes the alive machine should take over the IP to itīs
> second NIC.
>
> Is that possible? I read that all works only with one network. Are the
> any docs about this? or perhaps a workaround?

The CVS version (available for download) will manage this just fine.
However, bring up and down routes needs to be addressed (not hard).

--
Theo Schlossnagle
Principal Consultant
OmniTI Computer Consulting, Inc. -- http://www.omniti.com/
Phone: +1 301 776 6376 Fax: +1 410 880 4879
1024D/82844984/95FD 30F1 489E 4613 F22E 491A 7E88 364C 8284 4984
2047R/33131B65/71 F7 95 64 49 76 5D BA 3D 90 B9 9F BE 27 24 E7

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