Combining Dynamic And Static Ip Tunnels In The Same Chassis; Changing And Removing Existing Dynamic Ip Tunnels; Platform Considerations - Juniper IP SERVICES - CONFIGURATION GUIDE V 11.1.X Configuration Manual

For more information about configuring Mobile IP using GRE or DVMRP tunnels, see
"Configuring the Mobile IP Home Agent" on page 315 .

Combining Dynamic and Static IP Tunnels in the Same Chassis

You can configure both dynamic and static IP tunnels in the same chassis.
A tunnel pair consists of two endpoints; one side encapsulates and the other side
decapsulates. You can create a tunnel pair with two statically configured endpoints,
two dynamically created endpoints, or with one static and one dynamic endpoint.
When configuring IP tunnels, you must consider that a tunnel is uniquely defined by
its tunnel source, tunnel destination, transport virtual router, and mode (GRE or
DVMRP). The system does not allow multiple tunnels with the same parameters. For
example, when you configure a static tunnel with the same parameters as an existing
dynamic IP tunnel, the system does not create the dynamic IP tunnel.

Changing and Removing Existing Dynamic IP Tunnels

You can modify the parameters in a destination profile referenced by existing dynamic
IP tunnels. The changes only affect new dynamic IP tunnels that reference the
destination profile.
You can relocate a dynamic IP tunnel for the Mobile IP application.
You cannot relocate a dynamic IP tunnel for the data MDT application because it is
created using a profile. The system deletes dynamic IP tunnels that are relocated.
Connections between a static tunnel endpoint and a dynamic tunnel endpoint can
fail if the dynamic tunnel endpoint is deleted.
The client application removes dynamic IP tunnel interfaces when one of the following
situations occur:

Platform Considerations

For information about modules that support IP tunnels on the ERX7xx models,
ERX14xx models, and the ERX310 Broadband Services Router:
For information about modules that support IP tunnels on the E120 and E320
Broadband Services Routers:
The transport virtual router is removed.
The tunnel interface relocates and the tunnel had an IP interfaced stacked on it.
The tunnel interface indicates that setup is complete when the system is warm
started, but it has no upper IP interface.
See ERX Module Guide, Table 1, Module Combinations for detailed module
specifications.
See ERX Module Guide, Appendix A, Module Protocol Support for information about
the modules that support IP tunnels.
Chapter 10: Configuring Dynamic IP Tunnels
Platform Considerations
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