Sun Cluster System Administration Guide for Solaris OS

Dynamic Reconfiguration With Public Network Interfaces

You must consider a few issues when completing dynamic reconfiguration (DR) operations on public network interfaces in a cluster.


Caution – Caution –

For multipathing groups with two adapters, if the remaining network adapter fails while you are performing the DR remove operation on the disabled network adapter, availability is impacted. The remaining adapter has no place to fail over for the duration of the DR operation.


Complete the following procedures in the order indicated when performing DR operations on public network interfaces.

Table 7–4 Task Map: Dynamic Reconfiguration With Public Network Interfaces

Task 

Instructions 

1. Switch the IP addresses from the adapter to be removed to another adapter in the multipathing group, using the if_mpadm

if_mpadm(1M) man page.

The appropriate Solaris OS documentation: 

Solaris 9: “IP Network Multipathing Topics” in System Administration Guide: IP Services

Solaris 10:Part VI, IPMP, in System Administration Guide: IP Services

2. Remove the adapter from the multipathing group by using the ifconfig command

The appropriate Solaris documentation: 

Solaris 9: “IP Network Multipathing Topics” in System Administration Guide: IP Services

ifconfig(1M) man page

Solaris 10: Part VI, IPMP, in System Administration Guide: IP Services

3. Perform the DR operation on the public network interface 

Sun Enterprise 10000 DR Configuration Guide and the Sun Enterprise 10000 Dynamic Reconfiguration Reference Manual (from the Solaris 9 on Sun Hardware, and Solaris 10 on Sun Hardware collections)