From: Kenneth Modrego (Kenneth.Modrego@toyota-fs.com)
Date: Tue Oct 12 2004 - 11:19:33 EDT
Hi gents,
This more than a problem is a collection of thoughts regarding IPMP
configuration.
All the documentation I've read states that the "Test IP" addresses should
be set up as aliases, that is to say
int0 => TEST-IP0 (no failover) GROUP1
int1 => TEST-IP1 (no failover) GROUP1
int0:1 => HOST-IP (failover)
int1:1 => DUMB-IP (failover)
Taking into account this configuration, the outgoing traffic will use the
IP addresses TEST-IP0 providing Load Balancing
As I didn't like it, I configured the IPMP as follows.
int0 => TEST-IP0 (no failover)
int1 => TEST-IP1 (no failover)
int0:1 => HOST-IP (failover) GROUP1
Now all the packets are load balanced as well, but all the outgoing
traffic is marked with the HOST-IP, which is perfect.
I've checked pulling the cable and it works fine as well.
Here is my configuration "ukbhu032t" is the "virtual IP" that will switch
to the other interface,
[ukbhu032t] [~] # cat /etc/hostname.ce0
ukbhu032t-ce0-test netmask + broadcast + group v1280 deprecated -failover
up
addif ukbhu032t netmask + broadcast + failover up
[ukbhu032t] [~] # cat /etc/hostname.ce1
ukbhu032t-ce1-test netmask + broadcast + group v1280 deprecated -failover
up
This is my route table.
Routing Table: IPv4
Destination Gateway Flags Ref Use Interface
-------------------- -------------------- ----- ----- ------ ---------
192.168.0.0 192.168.0.115 U 1 3119 ce0:1
192.168.0.0 192.168.0.115 U 1 0 ce0
192.168.0.0 192.168.0.115 U 1 780 ce1
224.0.0.0 192.168.0.115 U 1 0 ce0:1
default 192.168.0.1 UG 1 4
127.0.0.1 127.0.0.1 UH 3 482091 lo0
So... I don't understand why is the first configuration is the one
recommended.
Am I missing anything? is there any reason that I fail to see?
Any comments/thought will be highly appreciated!
Best regards,
Kenneth Modrego
UNIX Systems Administrator
Europe & Africa Region
Toyota Financial Services (UK) PLC
Tel: +44 (0)1737 365509
Fax: +44 (0)1737 365520
mailto:kenneth.modrego@toyota-fs.com
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