Re: LVS-DR, arp problem...

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: LVS-DR, arp problem...
From: Joseph Mack <mack.joseph@xxxxxxx>
Date: Mon, 19 Nov 2001 13:12:15 -0500
Christian Joelly wrote:
> Hello!
> now i have drawn my setup for easier understanding, i hope someone can
> view "png" on his system :o)

how did you do the image? I'm looking for some way to do the same thing.

> director: kernel 2.4.10 with ip_vs-0.9.6 patch

> IP Virtual Server version 0.9.6 (size=4096)
> Prot LocalAddress:Port Scheduler Flags
>   -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
> TCP  edvlvs1.knapp.intern:www wlc
>   ->            Route   1      0          1

most likely packets are not getting back from the realservers to the client.

can you see packets for the VIP arriving on the realservers and none leaving
(with tcpdump)?

the 2 NIC realserver seems to be setup correctly. I haven't done it this way
for years, so I may have forgotten all the pitfalls. Maybe you could try it with
1 NIC on the realservers first.

> mac address on the VIP device. i have read the examples that comes with
>, and there the client uses 2 NICs. in an real production
> environment, does the client have to be changed to an router connecting
> the 2 networks together?

no the arrangment I use is just so I can change easily between a 1-NIC and a 
2_NIC director.

> befor i make the first connection to the VIP?

yes. This also includes before the first arp request.


Joseph Mack PhD, Senior Systems Engineer, Lockheed Martin
contractor to the National Environmental Supercomputer Center, 
mailto:mack.joseph@xxxxxxx ph# 919-541-0007, RTP, NC, USA

<Prev in Thread] Current Thread [Next in Thread>