
Tunnel Path MTU 125
For cases in which reverse tunneling is a known requirement, for example, in domains where
ingress filtering is deployed, the FA can be configured to force all Mobile Nodess connected
through an interface to use reverse tunneling with the following command:
ip mobile foreign-service reverse-tunnel mandatory
Tunnel Path MTU
Although not specific to Mobile IP, it makes sense to discuss path maximum transmission unit
(MTU), because it has implications on the tunnel soft state and encapsulation methods. This is
especially significant in the metro mobility model, because the tunnel path can traverse multiple
autonomous systems with v ...