Verifying Common Mobile IPv6 Functions

The information in the following sections describe the procedures for verifying common Mobile IPv6 functions. Refer to the previous sections in this chapter for general information about troubleshooting HP-UX Mobile IPv6.

Verifying Binding Updates Sent to Home Agents

Use the following procedure to verify the Binding Update messages sent from a Mobile Node to the Home Agent:

Attach a Mobile Node to a foreign network.
Allow the Mobile Node to send a Binding Update message to the Home Agent and register from the foreign network.
Use mip6admin -bindings [-l mobile node home address] to verify the Mobile Node’s binding cache entry in mip6mod.

Verifying Binding Updates Sent to Correspondent Nodes

Use the following procedure to verify the Binding Update messages sent from a Mobile Node to Mobile IPv6 Correspondent Nodes:

Attach a Mobile Node to a foreign network.
Allow the Mobile Node to send a Binding Update message to the Home Agent and register from the foreign network.
Use a Correspondent Node to ping the Mobile Node and generate traffic.
Use mip6admin -bindings [-l mobile node home address] to verify the Mobile Node’s binding cache entry in mip6mod.

Verifying the Return Routability Procedure

Use the following procedure to verify the Return Routability procedure between a Mobile Node and Correspondent Node:

Attach a Mobile Node to a foreign network.
Allow the Mobile Node to send a Binding Update message to the Home Agent and register from the foreign network.
Use a Correspondent Node to ping the Mobile Node and start the Return Routability procedure.
Use the nettl tool on the Home Agent to verify:
- the Mobile Node reverse-tunneled the Home Test Init message to the Home Agent
- the Home Agent forwarded the Home Test Init message to the Correspondent Node
- the Home Agent received the Home Test message sent from the Correspondent Node to the Mobile Node’s Home Address
- the Home Agent tunnelled the Home Test message to the Mobile Node’s Care-of Address
Use the nettl tool on the Correspondent Node to verify:
- the Home Test Init message arrived from the Mobile Node’s Home Address
- the Care-of Test Init message arrived from the Mobile Node’s Care-of Address
- the Correspondent Node sent the Home Test message to the Mobile Node’s Home Address
- the Correspondent Node sent the Care-of Test message to the Mobile Node’s Care-of Address

Verifying Route Optimization

Use the following procedure to verify Route Optimization:

Perform the steps in “Verifying the Return Routability Procedure”.
Use mip6admin -bindings [-l mobile node home address] to verify the Mobile Node’s binding cache entry on the Correspondent Node.
- If the Mobile Node’s binding cache entry is on the Correspondent Node, proceed to Step 3.
- If the Mobile Node’s binding cache entry is not on the Correspondent Node, troubleshoot the Mobile Node’s Binding Update message using mip6admin or nettl.
Use the nettl tool to verify the Correspondent Node is communicating directly with the Mobile Node and by passing the Home Agent.

Verifying Reverse-Tunneling Between Mobile Nodes and Home Agents

Use the following procedure to verify the reverse-tunneling procedure between a Home Agent and Mobile Node.

Attach a Mobile Node to a foreign network.
Allow the Mobile Node to send a Binding Update message to the Home Agent and register from the foreign network.

Use a Correspondent Node to ping the Mobile Node and generate traffic after the Mobile Node sends the Binding Update to the Home Agent.




	NOTE: Be sure the Correspondent Node is not running Mobile IPv6. If the Correspondent Node is running Mobile IPv6, Route Optimization might be used and the Mobile Node might send the data-packets directly to the Correspondent Node.

Use the nettl tool on the Home Agent to verify the data-packets sent to the Mobile Node from the Correspondent Node are reverse-tunneled through the Home Agent.

Verifying Common Mobile IPv6 Functions

Technical documentation

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Verifying Binding Updates Sent to Home Agents

Verifying Binding Updates Sent to Correspondent Nodes

Verifying the Return Routability Procedure

Verifying Route Optimization

Verifying Reverse-Tunneling Between Mobile Nodes and Home Agents