HP UX Auto Port Aggregation (APA) Software manual Solving Link Aggregate Problems Lacp Mode

Problem still exists? Report your problem to HP. See “Reporting Problems ” (page 92).

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

Solving Link Aggregate Problems (LACP Mode)

Link partner configured?

YES

Link aggregate configured?

YES

Link aggregate enabled?

YES

Correct ports in link aggregate?

YES

Verify that the switch is configured correctly with the appropriate NO 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.

Verify that the link aggregate is configured by issuing the lanscan NO 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.

Verify that the link aggregate is enabled by issuing the following NO 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.

Verify the ports in the link aggregate by issuing the following NO command:

# lanadmin -x -i linkAggPPA

74 Troubleshooting HP APA