ATM Configuration and Troubleshooting Guide

Conﬁguring EMS High Availability over ATM

Conﬁguring EMS HA-ATM for Remote Recovery (Using MC/ServiceGuard)

Chapter 6 133

Verifying the Remote Recovery Conﬁguration

NOTE This veriﬁcation assumes that you have already conﬁgured and veriﬁed

EMS HA-ATM for local recovery.

To verify the remote recovery conﬁguration, follow these steps:

Step 1. From another system that is on the same ELAN as the one you are

verifying, open a connection to the primary ELAN interface by using this

command:

ping ﬂoating_IP_address_of_ELAN

Step 2. Unplug the ATM cables on all the ATM adapters in the original system.

If remote failover has occurred correctly, the following things are true:

• ping resumes (after some delay) after the package starts on the

adoptive system.

Note that you can check to see if hatmmon is running on the adoptive

system, by using this command:

ps -ef | grep resource_name

The output should show the following:

/opt/hatmmon/sbin/hatmmon resource_name

• The netstat -in command shows that only one IP address is

assigned to the primary ELAN interfaces on the original system. The

ﬂoating IP addresses will have been assigned to ELAN interfaces on

the adoptive system.

For example, running HP-UX 10.20, if ela0 has failed and the IP

addresses have been transferred to elb0, the netstat -in display

after local recovery has occurred could look like this (25.128.10.194

and 25.128.20.194 are the ﬂoating IP addresses):

Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll

...

atm 09360 none none 0 0 0 0 0

ipa0* 9180 1.2.3.0 1.2.3.4 0 0 292324 0 0

ela0* 1500 none none 2 0 6 0 0