RE: Mobile IP vs. LAM

From: Haohong Lin (hhlin@xxxxxxxxxx)
Date: Thu Apr 05 2001 - 23:54:23 GMT-3


   
Thank you for showing me the alternative direction.

    I have read the white paper and practised in my lab. I move my
laptop(10.1.1.195) to another subnet and change default-gateway
(192.168.1.250). I telnet to R2 sucessfully. In R2 routing table,
 there is an entry of 10.1.1.195 with M code. It seems fine, hmm.
Then I found my problem -- I can't ping my laptop through R2,
although I have telneted to it. There is an entry of my laptop's
MAC address, when I "show arp" on R2. In R1's routing table,
there is not a host route of 10.1.1.195(My laptop's IP address).

    Can you tell me what 's the matter?

Topo & conf as follows:
                           |10.1.1.250/16
                           |-------R1--------/ |
                           | -----------R2----- |
192.168.1.250/24

|

 R1:
int e0
 ip add 10.1.1.250 255.255.0.0
 ip mobile arp
int s0
 ip add 192.168.2.1 255.255.255.0

router mobile

router ospf 10
 net 10.1.1.250 0.0.0.0 are 0
 net 192.168.2.1 0.0.0.0 are 0
 redist mobile
 default-metric 10

R2:
 int e0
 ip add 192.168.1.250 255.255.255.0

int s0
 ip add 192.168.2.2 255.255.255.0

router ospf 10
 net 192.168.1.250 0.0.0.0 are 0
 net 192.168.2.2 0.0.0.0 are 0

Regards,

    Haohong Lin
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Michael E. Flannagan
Sent: Friday, April 06, 2001 3:14 AM
To: Hebert, Cory J (cory.hebert@wcom.com); ccielab@groupstudy.com
Subject: RE: Mobile IP vs. LAM

http://www.cisco.com/warp/partner/synchronicd/cc/pd/iosw/ioft/lam/tech/la
mso_wp.htm

Search for "Mobile IP" - it does a reasonable job explaining the
difference.

---------------------------------------------------------
  C i s c o S y s t e m s Michael E. Flannagan
       | | Network Consulting Engineer
      ||| ||| Research Triangle Park, NC
    ||||||| ||||||| (919) 392-4550
.:|||||||||||:.:|||||||||||:. mflannag@cisco.com
---------------------------------------------------------

> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Hebert, Cory J (cory.hebert@wcom.com)
> Sent: Thursday, April 05, 2001 2:51 PM
> To: 'ccielab@groupstudy.com'
> Subject: Mobile IP vs. LAM
>
>
> Here's one I posted about a week ago, but didn't get any
> feedback, so here's
> another try:
>
> How do you know when you're supposed to use Mobile IP or
> Local-area mobility
> (LAM)?
>
> Thanks,
> Cory



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