Cisco Cisco Packet Data Gateway (PDG)
HA Service Configuration Mode Commands
▀ reverse-tunnel
▄ Command Line Interface Reference, StarOS Release 16
6096
reverse-tunnel
Enables use of reverse tunneling for Mobile IP session. Use no reverse-tunnel command to disable. If disabled, mobile
node (MN) packets are not tunneled to the HA in the reverse direction.
node (MN) packets are not tunneled to the HA in the reverse direction.
Product
HA
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > Context Configuration > HA Service Configuration
configure > context context_name > ha-service service_name
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-ha-service)#
Syntax
reverse-tunnel
{ default | no } reverse-tunnel
no
Indicates the reverse tunnel option is to be disabled. When omitted, the reverse tunnel option is enabled.
default
Indicates the reverse tunnel option is to be set to the default. When omitted, the reverse tunnel option is
enabled.
enabled.
Usage
Reverse tunneling involves tunneling datagrams originated by the mobile node to the HA service via the FA.
When an MN arrives at a foreign network, it listens for agent advertisements and selects an FA that supports
reverse tunnels. The MN requests this service when it registers through the selected FA. At this time, the MN
may also specify a delivery technique such as Direct or the Encapsulating Delivery Style.
Among the advantages of using reverse-tunneling are that:
When an MN arrives at a foreign network, it listens for agent advertisements and selects an FA that supports
reverse tunnels. The MN requests this service when it registers through the selected FA. At this time, the MN
may also specify a delivery technique such as Direct or the Encapsulating Delivery Style.
Among the advantages of using reverse-tunneling are that:
All datagrams from the mobile node seem to originate from its home network
The FA can keep track of the HA to which the mobile node is registered and tunnel all datagrams from
the mobile node to its HA
Use the
no
version of this command to disable reverse tunneling. If reverse tunneling is disabled, and the
mobile node does not request it, triangular routing will be performed.
Routing will be used.
The default setting is reverse tunnel enabled.
Routing will be used.
The default setting is reverse tunnel enabled.
Important:
If reverse tunneling is disabled on the system and a mobile node requests it, the call will be rejected
with a reply code of 74H (reverse-tunneling unavailable).