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How to Move an Interface From One IPMP Group
to Another Group
You can place an interface in a new IPMP group when the interface belongs to an existing IPMP group. You do not need to remove the interface from the current IPMP group. When you place the interface in a new group, the interface is automatically removed from any existing IPMP group.
On the system with the IPMP group configuration, assume the Primary Administrator role or become superuser.
The Primary Administrator role includes the Primary Administrator profile. To create the role and assign the role to a user, see Chapter 2, "Working With the Solaris Management Console (Tasks)," in System Administration Guide: Basic Administration.
Move the interface to a new IPMP group.
# ifconfig interface group group-name
Placing the interface in a new group automatically removes the interface from any existing group.
Example 31-8 Moving an Interface to a Different IPMP Group
To change the IPMP group of interface hme0, you would type the following:
# ifconfig hme0 group cs-link |
This command removes the hme0 interface from IPMP group test and then puts the interface in the group cs-link.
Replacing a Failed Physical Interface on Systems That Support Dynamic Reconfiguration
This section contains procedures that relate to administering systems that support dynamic reconfiguration (DR).
Note - The tasks pertain only to IP layers that are configured by using the ifconfig command. Layers before or after the IP layer, such as ATM or other services, require specific manual steps if the layers are not automated. The steps in the next procedures are used to unconfigure interfaces during predetachment and configure interface after postattachment.
How to Remove a Physical Interface That
Has Failed (DR-Detach)
This procedure shows how to remove a physical interface on a system that supports DR. The procedure assumes that the following conditions already exist:
Physical interfaces hme0 and hme1 are the example interfaces.
Both interfaces are in the same IPMP group.
hme0 has failed.
Logical interface hme0:1 has the test address.
You are replacing the failed interface with the same physical interface name, for example, hme0 with hme0.
Note - You can skip Step 2 if the test address is plumbed by using the /etc/hostname.hme0 file.
On the system with the IPMP group configuration, assume the Primary Administrator role or become superuser.
The Primary Administrator role includes the Primary Administrator profile. To create the role and assign the role to a user, see Chapter 2, "Working With the Solaris Management Console (Tasks)," in System Administration Guide: Basic Administration.
Display the test address configuration.
# ifconfig hme0:1 hme0:1: flags=9040842<BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 3 inet 192.168.233.250 netmask ffffff00 broadcast 192.168.233.255
You need this information to replumb the test address when replacing the physical interface.
Remove the physical interface.
Refer to the following sources for a complete description of how to remove the physical interface:
cfgadm(1M) man page
Sun Enterprise 6x00, 5x00, 4x00, and 3x00 Systems Dynamic Reconfiguration User's Guide
Sun Enterprise 10000 DR Configuration Guide
How to Replace a Physical Interface That
Has Failed (DR-Attach)
This procedure shows how to replace a physical interface on a system that supports DR.
On the system with the IPMP group configuration, assume the Primary Administrator role or become superuser.
The Primary Administrator role includes the Primary Administrator profile. To create the role and assign the role to a user, see Chapter 2, "Working With the Solaris Management Console (Tasks)," in System Administration Guide: Basic Administration.
Replace the physical interface.
Refer to the instructions in the following sources:
cfgadm(1M) man page
Sun Enterprise 6x00, 5x00, 4x00, and 3x00 Systems Dynamic Reconfiguration User's Guide
Sun Enterprise 10000 DR Configuration Guide, or Sun Fire 880 Dynamic Reconfiguration User's Guide
Plumb and bring up the test address.
# ifconfig hme0 test-address-configuration
Use the same test address configuration that was configured in the /etc/hostname.hme0 file. The test configuration is the same configuration that is displayed in Step 2 in the procedure How to Remove a Physical Interface That Has Failed (DR-Detach).
This configuration triggers the in.mpathd daemon to resume probing. As a result of this probing, in.mpathd detects the repair. Consequently, in.mpathd causes the original IP address to fail back from hme1.
See Test Addresses for more details about test addresses.
Note - The failback of IP addresses during the recovery of a failed physical interface takes up to three minutes. This time might vary, depending on network traffic. The time also depends on the stability of the incoming interface to fail back the failed-over interfaces by the in.mpathd daemon.