From: John Neiberger (neiby@xxxxxxxxxx)
Date: Sat Mar 30 2002 - 13:58:45 GMT-3
I'm not sure about the differences between Mobile IP and Local
Area Mobility. Without the two commands "ip mobile home-agent"
and "ip mobile foreign-agent" this would be a working LAM
config.
What do those two commands add to this configuration? And, why
would we classify this as Mobile IP instead of LAM?
Back to your config, if this is working correctly you should
see /32 routes for users who have moved to R8. The tricky
thing I noticed is that you can't initiate communication with
them because this is ARP-based. The /32 routes won't be
entered into the config until one of those devices issues an
ARP request.
John
---- On Fri, 29 Mar 2002, Dustin.Yates@ercgroup.com
(Dustin.Yates@ercgroup.com) wrote:
> I'm trying to ensure I've got the basic understanding of
Mobile IP
> down...
> I've got a network that is running OSPF between all of the
routers,
> which
> I've verified end-to-end IP connectivity. Here's the highly
simplified
> network:
>
> E0/0 - Router1 ----- OSPF NETWORK ----- Router 8 - E0/0
>
> Now, here's the requirement:
>
> Task: Support users who relocate from Router 1 to Router 8
without
> requiring them to change their IP addresses. Ensure only the
users from
> E0/0 (network 10.1.1.0/24) are allowed to roam on Router 8's
E0/0
> interface.
>
> Assuming all routing is working correctly before making any
changes
> (e.g.,
> Router 1 can ping Router 8's E0/0 address and vice versa), I
believe the
> following provides the minimum mobile IP commands required to
meet this
> task.
>
> Router 1:
> interface Ethernet0/0
> ip address 10.1.1.1 255.255.255.0
> !
> router mobile
> !
> router ospf 1
> redistribute mobile metric 100 subnets
> !
> ip mobile home-agent
>
> Router 8:
> interface Ethernet0/0
> ip address 172.16.1.1 255.255.255.0
> ip mobile arp access-group 1
> !
> router mobile
> !
> router ospf 1
> redistribute mobile metric 100 subnets
> !
> ip mobile foreign-agent
> !
> access-list 1 permit 10.1.1.0 0.0.0.255
>
> So, would this be enough to meet the requirement as stated?
If I
> attached a
> PC to Router 8's Ethernet0/0 interface with IP address of
10.1.1.2,
> should I
> expect this PC to be able to ping 10.1.1.1? What changes in
the routing
> tables should one see if this is working correctly?
>
> TIA!!!
>
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