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Paolo
I'm trying to duplicate what you've got working on your RHAS 3 machine
but without success. In /etc/sysconfig/network-scripts/ifcfg-lo:1, I
have this (VIP = 128.243.40.199):
DEVICE=lo:1
IPADDR=128.243.40.199
NETMASK=255.255.255.255
NETWORK=128.243.0.0
ONBOOT=yes
ARP=no
which appears like this in ifconfig output:
eth0 Link encap:Ethernet HWaddr 00:06:5B:8F:9D:60
inet addr:128.243.220.24 Bcast:128.243.255.255
Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
...
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING NOARP MTU:16436 Metric:1
...
lo:1 Link encap:Local Loopback
inet addr:128.243.40.199 Mask:255.255.255.255
UP LOOPBACK RUNNING NOARP MTU:16436 Metric:1
On that same machine (cache5), I can ping its VIP and check that the VIP
doesn't appear in the ARP cache. However, when I try to ping the VIP
from my desktop machine, I get replies which my ARP cache shows have
come from the MAC address of cache5's eth0. No other machine has the
VIP, so it must be cache5 which is replying. It appears to be the usual
behaviour for a 2.4 kernel, where a local address is ARPed for,
whichever interface it is on. Could you give more details of how you got
yours working, please?
thanks
David
On Wed, 2004-05-05 at 13:31, Paolo Penzo wrote:
> I'm currently using a couple of RS with the VIP on their loopback
> devices. Both servers are RHL7.3 (kernel 2.4.20-18.7).
> Moreover I've just tried the same network configuration (arp flag set to
> off) on a RHAS 3 (kernel 2.4.21-4.EL): it worked fine!
> Bye,
> Paolo.
> >Paolo Penzo wrote:
> >
> >
> >>Simply assign the VIP to the loopback device with the noarp flag (ARP=no
> >>in config file).
> >>
--
David Osborne
Central Systems & Security Team, Information Services
The University of Nottingham
http://www.nottingham.ac.uk/~cczdao/
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