From: Mannan Venkatesan (mv_lab@xxxxxxxxxxx)
Date: Wed Feb 20 2002 - 10:43:10 GMT-3
----- Original Message -----
From: "Mannan Venkatesan" <mv_lab@hotmail.com>
To: "Bob Sinclair" <bsin@erols.com>
Cc: <Sandeepkulkarni@firstusa.com>
Sent: Wednesday, February 20, 2002 8:41 AM
Subject: Re: Local Area Mobility
> Bob,
> It is working without changing the default-gateway. Problem was iwth OSPF.
> The router which was connected to the mobile host was not learning the
> mobile host subnet.
>
> Thanks a lot,
> Mannan
>
> ----- Original Message -----
> From: "Bob Sinclair" <bsin@erols.com>
> To: "Mannan Venkatesan" <mv_lab@hotmail.com>
> Sent: Tuesday, February 19, 2002 3:20 PM
> Subject: Re: Local Area Mobility
>
>
> I am not sure what the problem is. Here are the steps that worked for me:
>
> 1. ip mobile arp on each of the ethernets I use for PC
> 2. redistribute mobile under ospf
>
> Do not change default gateway on PC/router. Maker sure to clean out the
arp
> table after move. All subnets connecting the two areas must be subnets of
> the same major net. You must redistribute mobile into a classless
protocol
> (EIGRP or OSPF)
>
> Let me know how it goes.
>
> ----- Original Message -----
> From: "Mannan Venkatesan" <mv_lab@hotmail.com>
> To: "Bob Sinclair" <bsin@erols.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Tuesday, February 19, 2002 2:29 PM
> Subject: Re: Local Area Mobility
>
>
> > Bob,
> > I tried it again and it didn't work even I enabled proxy arp. When I
> changed
> > the default gateway on the host pointing to the new router interface,
then
> > it worked. And the host ip address appeared as 'M' route. Any help?
> >
> > PS : I used a router as the host with 'no ip routing'
> >
> > Thanks,
> > Mannan
> >
> > ----- Original Message -----
> > From: "Bob Sinclair" <bsin@erols.com>
> > To: "Mannan Venkatesan" <mv_lab@hotmail.com>
> > Cc: <ccielab@groupstudy.com>
> > Sent: Monday, February 18, 2002 8:43 PM
> > Subject: Re: Local Area Mobility
> >
> >
> > Mannan,
> >
> > Local Area Mobility relies on proxy arp. It requires the host to reboot
> or
> > otherwise clean out its arp table after the move. One of the
requirements
> > of LAM is that all of the networks in the local area (the area in which
> LAM
> > is effective) be subnets of the same major network.
> >
> > When the pc arps for the gateway, proxy arp on the router recognizes
that
> > this pc is on the wrong subnet and tries to fix the problem for the pc
by
> > responding with his own MAC address. The PC thinks he has the mac
address
> > of his configured default gateway, but in fact has the local router
> > interface mac address. With regular proxy arp, the router gets the data
> > packet and passes it on to the destination. LAM adds the ability to
> > distribute host routes for stations on the "wrong" subnet, so all
routers
> > know that this particular PC is not located with the rest of the hosts
> with
> > the same subnet address.
> >
> > One confusing thing: LAM is similar to but much simpler than IP
Mobility.
> > IP Mobility is quite complex, does not require rebooting, and relies on
> > tunneling rather than proxy arp and host routes.
> >
> > I just tried it and it works for me, without bridging.
> >
> > -Bob
> >
> >
> > ----- Original Message -----
> > From: "Mannan Venkatesan" <mv_lab@hotmail.com>
> > To: "Sandro Ciffali" <sandyccie@yahoo.com>; <ccielab@groupstudy.com>
> > Sent: Monday, February 18, 2002 10:34 AM
> > Subject: Re: Local Area Mobility
> >
> >
> > > Ok, if you move the mobile host to e0/0, don't you have to change the
> > > default gateway on the host to 10.10.40.3??? And then, routing for
your
> > > mobile host is done by LAM. If you do that, why do you need bridging?
> > What
> > > if you move the host to different router? You can also use IRDP.
> > >
> > > HTHs,
> > > Mannan
> > >
> > > ----- Original Message -----
> > > From: "Sandro Ciffali" <sandyccie@yahoo.com>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Sunday, February 17, 2002 10:50 PM
> > > Subject: Local Area Mobility
> > >
> > >
> > > > Group,
> > > > Here is what i am trying to do.
> > > >
> > > > R3 has two ethernet ports, E0/0 and E0/1. E0/0 has ip
> > > > address 10.10.40.3/24, E0/1 has ip address
> > > > 10.10.70.2/24. I have a mobile host on this network
> > > > which i want to keep mobile from E0/0 to E0/1, The
> > > > mobile host has a ip 10.10.70.1/24.
> > > > I configred mobile arp timers for the two ethernet
> > > > ports fine. Did a redistribute mobile under my Eigrp
> > > > routing protocol,
> > > > This sims to be working fine. I have following
> > > > question.
> > > > If this host moves to E0/0, Now he is on 10.10.40.0/24
> > > > network, So how can the reply from 10.10.70.1/24 host
> > > > be replied?
> > > > To salve this issue i configured transparent bridging
> > > > between two ethernet ports and it worked fine. Is this
> > > > right way of doing it??? If yes then let us say we
> > > > have a mobile host that is not in either of above two
> > > > networks how will the reply from this host be routed
> > > > back to the originator?
> > > >
> > > > Can some one pls. reply to the above question?
> > > >
> > > > Thanks
> > > > Sandro
> > > >
This archive was generated by hypermail 2.1.4 : Thu Jun 20 2002 - 13:46:28 GMT-3