On Linux servers, use ifconfig command when aliasing multiple clusters on the loopback device
 Technote (troubleshooting)
 
Problem(Abstract)
On Linux 2.4.x servers, when aliasing multiple clusters to the loopback device, use the ifconfig command. If the server has a cluster address configured on the loopback device using the "ip address add" command, only one cluster address can be aliased.
 
Resolving the problem
Certain considerations must be taken when using Linux kernel 2.4.x servers and Dispatcher's mac forwarding method. If the server has a cluster address configured on the loopback device using the ip address add command, only one cluster address can be aliased.

When aliasing multiple clusters to the loopback device, use the ifconfig command. For example:

ifconfig lo:<num> <cluster-address> netmask 255.255.255.255 up

Additionally, there are incompatibilities between the ifconfig method of configuring interfaces and the ip method of configuring interfaces. Best practice suggests that a site choose one method and use that method exclusively.

 
 
Cross Reference information
Segment Product Component Platform Version Edition
Application Servers WebSphere Edge Server Load Balancer Linux Edge Server 2.0 GA, Edge Server 2.0 NLV, Edge Server 2.0.x
Application Servers Runtimes for Java Technology Java SDK
 
Historical Number
83128
 
 


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > Edge Component
Operating system(s): Linux
Software version: 5.0
Software edition:
Reference #: 1082583
IBM Group: Software Group
Modified date: Nov 7, 2003