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Re: HELP: Arp Problem

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: HELP: Arp Problem
From: Jean Paul Piccato <j.piccato@xxxxxxxxxxxxxx>
Date: Thu, 17 Jan 2002 09:45:14 +0100
Roberto Nibali wrote:
[SNIPS]
>  > Now I've a big trouble with one of them... The problem appear also
>  > before I get up all the stuff around the LVS... Simply I power-on
>  > the real server, I make linux start and I set up the two eth  from
>  > command line.... I give them 192.168.17.10 and 192.168.10.30 as IP
>  > address. (.30 is the address for the VIP).
> 
> Which one is which?
192.168.17.10 RIP
192.168.17.30 VIP (Sorry I've written 10 instead of 17)
Netmasks are all 255.255.255.224 so 192.168.17.31 is broadcast...

>  > The eth1 is leaved floating and is not really connected to the
>  > switch/hub of the net...
> 
> Ok, so I assume, 192.168.10.30 is the VIP with netmask /32? Please, use
> netmasks when referring to IP addresses. Better even to help debugging
> is if you show an output of 'ip addr show'. I trust tools better then
> people typing ;)

[root@guinness root]# ip addr show
1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
    link/ether 00:04:76:cd:36:70 brd ff:ff:ff:ff:ff:ff
    inet 192.168.17.10/27 brd 192.168.17.31 scope global eth0
3: eth1: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
    link/ether 00:a0:24:4e:df:19 brd ff:ff:ff:ff:ff:ff
    inet 192.168.17.30/27 brd 192.168.17.31 scope global eth1

[SNIPS] 
> Neither does it to me right now. What happens if you disable ip_forward?
> I'm just asking out of curiosity.
Nothing at all... I eth0 continue to reply instead eth1...
This is the result of `arp -a` on client after two ping...

? (192.168.17.30) at 00:04:76:CD:36:70 [ether] on eth0
? (192.168.17.1) at 00:50:BA:BB:A5:68 [ether] on eth0
? (192.168.17.10) at 00:04:76:CD:36:70 [ether] on eth0

[SNIPS]
>  > Excuse me in the case this is not pertinet to the mailing list...
> 
> E la prima volta, non ti affochiamo! Salve,
;) Do you mean   E' la prima volta.... ?


Grazie per l'aiuto...
Jean Paul


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