From: Scott Morris (swm@emanon.com)
Date: Mon Nov 08 2004 - 19:23:14 GMT-3
IRDP is how the mobile node realizes that it has roamed to a new
router/tower... So it's only on the foreign side of things.
The care-of-acccess list sets up restrictions where the MN can or cannot
roam (deny = no, permit = yes)
The roam-access list sets up restrictions about who can roam. The "ip
mobile host" line sets up a range of Ips allowed to roam, but perhaps you
really didn't want that whole range to roam. Again, deny = no, permit =
yes. By default, everything is permitted.
HTH,
Scott Morris, MCSE, CCDP, CCIE4 (R&S/ISP-Dial/Security/Service Provider)
#4713, JNCIP, CCNA-WAN Switching, CCSP, Cable Communications Specialist, IP
Telephony Support Specialist, IP Telephony Design Specialist, CISSP
CCSI #21903
swm@emanon.com
-----Original Message-----
From: Matt Mullen [mailto:mullenm@gmail.com]
Sent: Monday, November 08, 2004 2:21 PM
To: joshua lauer User
Cc: Scott Morris; ccie2be; PB W-wa; Jesse Loggins; Tomasz Siwiarek;
ccielab@groupstudy.com
Subject: Re: Material about Mobile IP
Mmmmmmm beer. Anyway.
Below I have posted the example configuration from the Doc CD:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr
_c/ipcprt1/1cfmobip.htm
I am trying to gain a better understanding of what this config is doing.
Here is what I have gathered so far: If an MN with IP address
10.0.0.1 roamed to E1 of the FA, the MN will solicit or will receive agent
advertisements from the FA. The MN will then receive the care-of address,
68.0.0.31 and use this to register with the HA. The HA then adds a mapping
for the MN home ip address 10.0.0.1 to the current care-of ip address
68.0.0.31 in its mobility binding table.
The HA advertises reachability to the IP subnet of the MN (10.0.0.0), and
when packets are received for the MN the HA tunnels them to the
care-of address. The FA then extracts the packets from the tunnel
and forwards them to the MN. Am I missing or mis-stating anything
here?
A few things in the doc go unexplained; the doc shows IRDP configured on E1
of the FA. Why is this configured and is it necessary for Mobile IP? Or,
to put it another way would it be necessary to get the points? Also, what
are the roam-access 1 and the care-of -access 2 lists doing?
------------------------ Home Agent
--------------------------------------------------
router mobile
!
! Define which hosts are permitted to roam ip mobile home-agent broadcast
roam-access 1 !
! Define a virtual network
ip mobile virtual-network 10.0.0.0 255.0.0.0 !
! Define which hosts are on the virtual network, and the care-of access list
ip mobile host 10.0.0.1 10.0.0.10 virtual-network 10.0.0.0 255.0.0.0
care-of-access 2 !
! Define which hosts are on Ethernet 1, with lifetime of one hour ip mobile
host 11.0.0.1 11.0.0.5 interface Ethernet1 lifetime 3600 !
! The next ten lines specify security associations for mobile hosts ! on
virtual network 10.0.0.0 !
ip mobile secure host 10.0.0.1 spi 100 key hex
12345678123456781234567812345678 ip mobile secure host 10.0.0.2 spi 200 key
hex 87654321876543218765432187654321 ip mobile secure host 10.0.0.3 spi 300
key hex 31323334353637383930313233343536 ip mobile secure host 10.0.0.4 spi
100 key hex 45678332353637383930313233343536 ip mobile secure host 10.0.0.5
spi 200 key hex 33343536313233343536373839303132 ip mobile secure host
10.0.0.6 spi 300 key hex 73839303313233343536313233343536 ip mobile secure
host 10.0.0.7 spi 100 key hex 83930313233343536313233343536373 ip mobile
secure host 10.0.0.8 spi 200 key hex 43536373839313233330313233343536 ip
mobile secure host 10.0.0.9 spi 300 key hex 23334353631323334353637383930313
ip mobile secure host 10.0.0.10 spi 100 key hex
63738393132333435330313233343536
!
! The next five lines specify security associations for mobile hosts ! on
Ethernet1 !
ip mobile secure host 11.0.0.1 spi 100 key hex
73839303313233343536313233343536 ip mobile secure host 11.0.0.2 spi 200 key
hex 83930313233343536313233343536373 ip mobile secure host 11.0.0.3 spi 300
key hex 43536373839313233330313233343536 ip mobile secure host 11.0.0.4 spi
100 key hex 23334353631323334353637383930313 ip mobile secure host 11.0.0.5
spi 200 key hex 63738393132333435330313233343536 !
! Deny access for this host
access-list 1 deny 11.0.0.5
!
! Deny access to anyone on network 13.0.0.0 trying to register access-list 2
deny 13.0.0.0
------------------------------ Foreign Agent
----------------------------------------
interface Ethernet0
ip address 68.0.0.31 255.0.0.0
interface Ethernet1
ip address 67.0.0.31 255.0.0.0
ip irdp
ip irdp maxadvertinterval 10
ip irdp minadvertinterval 7
ip mobile foreign-service
ip mobile registration-lifetime 3600
!
router mobile
!
ip mobile foreign-agent care-of Ethernet0
On Sun, 07 Nov 2004 19:47:44 -0500, joshua lauer User <jslauer@hotmail.com>
wrote:
> After the lab beer will be my new best friend!
>
>
>
>
> jl
>
> on 11/7/04 7:45 PM, Scott Morris at swm@emanon.com wrote:
>
> > DocCD is your friend!
> >
> > Remember that anything given to you on the lab should exist on the
DocCD.
> > Sometimes, it isn't located in an obvious place, but it's all there!
> >
> > Scott
> >
> > -----Original Message-----
> > From: joshua lauer User [mailto:jslauer@hotmail.com]
> > Sent: Sunday, November 07, 2004 7:40 PM
> > To: Scott Morris; 'ccie2be'; 'PB W-wa'; 'Jesse Loggins'; 'Tomasz
Siwiarek'
> > Cc: ccielab@groupstudy.com
> > Subject: Re: Material about Mobile IP
> >
> > Just one more thing I don't know, I just figgered out how to do LAM
> > and now Mobile ip :) I'll add it to the bottom of my list of things
> > that seems to be getting larger not smaller....oh well, at least I
> > can find it on the doccd
> > :)
> >
> > jl
> >
> >
> > on 11/7/04 6:28 PM, Scott Morris at swm@emanon.com wrote:
> >
> >> Unfortunately, that's correct. It has specifically beed added onto
> >> the R&S lab, but NOT onto the SP lab. *shrug*
> >>
> >> IMHO, if you have it, you'll be setting up a router as the Home
> >> Agent to point to an FA on the backbone someplace. At least that
> >> is how I would implement it when designing a lab!
> >>
> >>
> >> Scott Morris, MCSE, CCDP, CCIE4 (R&S/ISP-Dial/Security/Service
> >> Provider) #4713, JNCIP, CCNA-WAN Switching, CCSP, Cable
> >> Communications Specialist, IP Telephony Support Specialist, IP
> >> Telephony Design Specialist, CISSP CCSI #21903 swm@emanon.com
> >>
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> >> Behalf Of ccie2be
> >> Sent: Sunday, November 07, 2004 5:00 PM
> >> To: PB W-wa; Jesse Loggins; Tomasz Siwiarek
> >> Cc: ccielab@groupstudy.com
> >> Subject: Re: Material about Mobile IP
> >>
> >> Off-list
> >>
> >> Peter, Tomasz,
> >>
> >> I can tell you that Mobile IP is definately fair game on the lab. I
> >> can't say if it will be on the particular lab you get but it's
> >> absolutely on some of them.
> >>
> >> So, my advice is to know how to configure it and practice doing so.
> >> It's not something that's easy to figure out during the lab.
> >>
> >> HTH, Tim
> >> ----- Original Message -----
> >> From: "PB W-wa" <pbubienczyk@szczesliwice.pl>
> >> To: "Jesse Loggins" <jlogginsccie@san.rr.com>;
> >> <ccielab@groupstudy.com>; "Tomasz Siwiarek"
> >> <siwiarek@poczta.onet.pl>
> >> Cc: <ccielab@groupstudy.com>
> >> Sent: Sunday, November 07, 2004 4:47 PM
> >> Subject: Re: Material about Mobile IP
> >>
> >>
> >>> Tomasz
> >>> I dont't think that you'll need to study mobile ip unless you're
> >>> doing sp track
> >>>
> >>> if your're study fo r&s your're probably asking for documantation
> >>> for
> >> local
> >>> area mobility which is straightforward topic comparing to mobile
> >>> ip
> >>>
> >>> just do ip mobile arp (with subparameters if necessary) on the
> >>> interface which will be hosting hosts from other subnets, and then
> >>> router mobile,
> >> and
> >>> under your main routing process (for example ospf) redist mobile
> >>>
> >>> ip mobile arp will register host route in your route table, and
> >>> redist mobile will redistribute it into your main routing process
> >>> - and than this host will be reachable througout routing domain
> >>>
> >>> http://www.cisco.com/warp/public/cc/pd/iosw/ioft/lam/tech/lamso_wp
> >>> .ht
> >>> m
> >>>
> >>>
> >> http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/c
> >> s/c
> >> sprtn1
> >>> /csipadr.htm#xtocid2736526
> >>>
> >>> rgds - peter
> >>>
> >>> ----- Original Message -----
> >>> From: "Jesse Loggins" <jlogginsccie@san.rr.com>
> >>> To: <ccielab@groupstudy.com>; "Tomasz Siwiarek"
> >>> <siwiarek@poczta.onet.pl>
> >>> Cc: <ccielab@groupstudy.com>
> >>> Sent: Sunday, November 07, 2004 11:22 PM
> >>> Subject: Re: Material about Mobile IP
> >>>
> >>>
> >>>> The doccd has a very good and extensive explanation. Here is a link:
> >>>>
> >>>
> >> http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122
> >> cgc
> >> r/fipr
> >>> _c/ipcprt1/1cfmobip.htm
> >>>>
> >>>>
> >>>> On Sunday 07 November 2004 11:47, Tomasz Siwiarek wrote:
> >>>>> Hello,
> >>>>> where can I found good explanation of Mobile IP technology - to
> >>>>> prepare to CCIE lab?
> >>>>> Thank you
> >>>>> Tomasz Siwiarek
> >>>>>
> >>>>>
> >> ___________________________________________________________________
> >> ___
> >> _
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> >>>>
> >>>> _________________________________________________________________
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> >>>
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> >>
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