From: Doug Calton (dcalton@fuse.net)
Date: Thu Feb 13 2003 - 10:12:50 GMT-3
Well, I got it to work today. My testing shows that you need the following
configured on the remote router where the roaming host will appear on :
config-if->ip mobile arp access-group ???
config->router mobile
config-router->redistribute mobile subnets (I used OSPF for my classless
routing protocol)
You do not need anything configured on the roaming host's home router - just
the remote routers providing this mobile service.
I got clobbered by a couple of things along the way. First, removing
"router mobile" deletes the configured "redistribute mobile" command.
Second, the interface to the router subnet MUST be isolated by a hub or
switch from the host. Silly of me, but I tried to save cables at one point
by using a crossover direct between the router and the workstation. Of
course, OSPF would not recognize the subnet until the interface was up, so
there was no route to establish mobile arp with, and if the PC was up before
there WAS a route, mobile arp failed. Oh well.
Thanks again to all for the feedback and suggestions!
----- Original Message -----
From: "P729" <p729@cox.net>
To: "Doug Calton" <dcalton@fuse.net>; "ccielab" <ccielab@groupstudy.com>
Sent: Wednesday, February 12, 2003 5:26 PM
Subject: Re: Problem getting local mobility to work
> IIRC, when you enable LAM, host routes will begin to populate the RT as
"M"
> derived routes. It is these routes that you would redistribute into an IGP
> to extend "mobility area". (Please let me know if I'm all wet on this)
>
> Are you able to test with wireless? Essentially, wireless roaming is a
> layer-2 handoff; LAM uses ARP/RARP as a sort of registration/heartbeat
> process. It'd be interesting to see how the two interact... My guess would
> be it would support "nomadic" roaming (stop, move, start) and not
seamless,
> non-stop roaming (say for VoIP). MIP clients are supposed to be able to
hand
> off seamlessly, ostensibly through interaction with the agents and perhaps
> some preemptive or anticipatory measures. Then again, some of the latter
is
> being incorporated directly into some access points...
>
> In case you want to pursue it, Birdstep (www.birdstep.com) is the only MIP
> client I know of.
>
> Regards,
>
> Mas Kato
> https://ecardfile.com/id/mkato
>
> ----- Original Message -----
> From: "Doug Calton" <dcalton@fuse.net>
> To: "P729" <p729@cox.net>; "ccielab" <ccielab@groupstudy.com>
> Sent: Wednesday, February 12, 2003 4:40 AM
> Subject: Re: Problem getting local mobility to work
>
>
> Thanks - I am trying LAM, not MIP. AFAIK, there are no clients for MIP
> available, so I have never been able to really test MIP. Anyway, as to
your
> note that with LAM, I need to configure the ip mobile arp and redistribute
> commands on the home network as well, I am surprized, but I will try it.
As
> for the ip route mobile, I am unclear if this is needed for LAM or not.
If
> it is not required, I wonder what the redistribute is distributing.
Again,
> I will test out later today and post results on the newsgroup. Thanks for
> the explanation.
>
> ----- Original Message -----
> From: "P729" <p729@cox.net>
> To: "DougAtHome" <dcalton@fuse.net>; "ccielab" <ccielab@groupstudy.com>
> Sent: Tuesday, February 11, 2003 9:06 PM
> Subject: Re: Problem getting local mobility to work
>
>
> > First of all, you may want to sort out what you're really trying to
> > accomplish: Local Area Mobility (LAM) or Mobile IP (MIP). There appears
to
> > be fragments of each in your sample config.
> >
> > The 'ip mobile arp' interface command and the 'redistribute mobile'
> routing
> > process command in Rtr5 enable LAM on Rtr5. You'll need complementary
> > commands on Rtr2 and I believe you'll need to make the subnets
contiguous
> > (change to /24 masks or re-address one or the other).
> >
> > The 'router mobile' global command enables MIP, but the rest of a MIP
> > configuration appears to be missing (home and foreign agents, etc.).
You'd
> > also need a MIP client on your host(s) or transparent proxies (like
> Aironet
> > 350s with the latest code).
> >
> > Regards,
> >
> > Mas Kato
> > https://ecardfile.com/id/mkato
> >
> > ----- Original Message -----
> > From: "DougAtHome" <dcalton@fuse.net>
> > To: "ccielab" <ccielab@groupstudy.com>
> > Sent: Tuesday, February 11, 2003 5:33 AM
> > Subject: Problem getting local mobility to work
> >
> >
> > I have been trying to get mobile IP to work in a local network. For
> > purposes
> > of this discussion, the topology is like so:
> >
> > VLAN11 (170.10.11.0/26) -- Rtr2 -----Frame Relay --Rtr5 -- VLAN34
> > (170.10.10.1/26)
> >
> > Rtr2's VLAN I/F is EIGRP, which redistributes into OSPF (and OSPF into
> > EIGRP),
> > while the FR ntwk is Area 0 OSPF. VLAN 34 is in area 2.
> >
> > Full routing in the network is available, no bugs or issues.
> >
> > I configured a PC with an IP addr of 170.10.11.5/26 (gateway
170.10.11.1,
> > which is the Rtr2 I/F), and move it to VLAN 34, but it does not start up
> > Router Mobile, nor can I ping anywhere out of the PC. I have installed
> the
> > commands as I understand from Cisco documentation, but no soap. Does
any
> > one
> > have a working config or a link showing this with an example?
> >
> > Following is my current config of Rtr5, if needed. TIA!
> >
> > hostname Rtr5
> > enable secret 5 $1$16B7$XA9fx4lFw2T3sLiXSzjqy1
> > clock timezone EST -5
> > clock summer-time EDT recurring
> > ip subnet-zero
> > no ip domain-lookup
> > ip audit notify log
> > ip audit po max-events 100
> > ip ssh time-out 120
> > ip ssh authentication-retries 3
> > call rsvp-sync
> > interface Loopback0
> > ip address 170.10.5.1 255.255.255.0
> > ip ospf network point-to-point
> > interface Ethernet0/0
> > ip address 170.10.10.2 255.255.255.192
> > ip mobile arp access-group 10
> > ip ospf authentication
> > ip ospf authentication-key xxxxxx
> > ip ospf message-digest-key 1 md5 xxxxxxxx
> > half-duplex
> > interface Serial0/0
> > ip address 170.10.8.5 255.255.255.240
> > encapsulation frame-relay
> > ip ospf message-digest-key 1 md5 xxxxxxx
> > ip ospf network point-to-multipoint
> > no fair-queue
> > frame-relay interface-dlci 52
> > frame-relay interface-dlci 53
> > no frame-relay inverse-arp
> > interface Ethernet0/1
> > no ip address
> > shutdown
> > half-duplex
> > router mobile
> > distance 80
> > router ospf 1
> > log-adjacency-changes
> > area 0 authentication message-digest
> > area 0 range 170.10.8.0 255.255.255.0
> > area 2 range 170.10.10.0 255.255.255.0 cost 54
> > area 2 virtual-link 170.10.7.1 message-digest-key 1 md5 xxxxxxx
> > redistribute mobile metric 54 subnets
> > network 170.10.5.1 0.0.0.0 area 2
> > network 170.10.8.5 0.0.0.0 area 0
> > network 170.10.10.2 0.0.0.0 area 2
> > ip classless
> > ip http server
> > access-list 10 permit 170.10.11.0 0.0.0.192
> > dial-peer cor custom
> > line con 0
> > session-timeout 60
> > exec-timeout 60 0
> > password xxxxx
> > login
> > line aux 0
> > line vty 0 4
> > session-timeout 60
> > exec-timeout 60 0
> > password xxxxx
> > login
> > line vty 5 15
> > login
> > ntp authentication-key 1 md5 xxxxxxxx
> > ntp authenticate
> > ntp trusted-key 1
> > ntp clock-period 17208130
> > ntp server 170.10.9.1
> > end
> > .
.
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