HP Auto Port Aggregation Administrator's Guide for HP-UX 11i v1 and 11i v2 September 2008
2. After you identify the host with the problem, do the following:
a. Confirm that the NIC is properly configured. Verify that the
broadcast address and address mask for the local host are
correct.
b. Make sure the local host's /etc/hosts file has the correct
IP address for the local host.
c. Make sure the cabling from the local host to the network is
intact and properly connected.
d. If connected over a local area network (LAN), verify that the
Address Resolution Protocol (ARP) entries are correct and
that the system is properly connected to the LAN.
e. Check the /var/adm/nettl.LOG000 file to see if there are
any errors (for example, cable disconnection messages).
Format the nettl.LOG000 file using the following command:
# netfmt -N nettl.LOG000
Problem still exists?
Report your problem to
HP. See “Reporting
Problems ” (page 92).
Solving Link Aggregate Problems (LACP Mode)
Link partner
configured?
NO
YES
Verify that the switch is configured correctly with the appropriate
ports enabled and autonegotiation set to ON. See the appropriate
switch documentation to determine if the switch ports connected to
the server are configured correctly for link aggregation (trunking) and
support LACP.
Link aggregate
configured?
NO
YES
Verify that the link aggregate is configured by issuing the lanscan
command. Link aggregate names begin with LinkAgg.
If the link aggregate is not configured, use SAM to configure it. See
“Configuring a Link Aggregate” (page 36) for more information.
Link aggregate
enabled?
NO
YES
Verify that the link aggregate is enabled by issuing the following
command:
If the aggregate is enabled, the Link Aggregation Mode is
LACP_AUTO. This also indicates that any LACP automatic protocol
negotiation was successful.
If the aggregate is not enabled, do the following:
1. Check the cabling between the NIC and the switch.
2. Verify that the link partner is configured to run the IEEE 802.3ad
LACP protocol. Make any changes, if necessary, and wait 10
seconds. Then, verify that the link aggregate is enabled.
3. Verify that all ports in the aggregate are set to the same mode by
using the following command for each port:
If they are not, use the SAM to modify the link aggregate.
Correct ports in
link aggregate?
NO
YES
Verify the ports in the link aggregate by issuing the following
command:
# lanadmin -x -i linkAggPPA
74 Troubleshooting HP APA