From: John Matus (john_matus@hotmail.com)
Date: Wed Jun 01 2005 - 19:42:11 GMT-3
ok, so the virtual-metwork is the pseudo-network that would be assigned to
the MN on the HA side, or, it is the local-address assigned to the
MN...................but, is this allocated from internal address space or
external address space? does the virtual network need to be a routable ip
address? if a client wanted to send an email from pda to pda, how would
they know what address to send to? hmmm......perhaps there is a nat'ing
feature involved in with the virtual-networks.
>From: "ccie2be" <ccie2be@nyc.rr.com>
>To: "'John Matus'" <john_matus@hotmail.com>, <ccielab@groupstudy.com>
>Subject: RE: ip mobile virtual-network
>Date: Wed, 1 Jun 2005 18:33:30 -0400
>
>John,
>
>I didn't really understand the idea behind virtual networks either after
>having read the Doc-CD several times. But, after reading the new book on
>Mobile IP, I now understand it perfectly.
>
>It's actually not a difficult concept.
>
>Suppose your network provide connectivity for devices like laptops, pda's,
>ip cell phones that never actually physically connect to your network.
>
>Since these devices never physically connect to your network, there's
>really
>no reason to allocate a physical interface for these devices just so you
>can
>assign ip subnet.
>
>So, instead of allocating a physical interface and assigning an ip subnet
>to
>this interface, what you do instead is create a virtual network. From this
>virtual network, you allocate ip addresses to all these devices.
>
>Now, when these devices are away from their home network which is all the
>time, pkts sent to these devices will go to the HA router. From there, the
>HA will create a tunnel to the FA when these device actually attach to the
>network.
>
>For pkts to these MN to get to the HA in the first place, keep in mind,
>that
>this virtual network must be know throughout the entire network. This
>means
>that this virtual network must be included in the routing process.
>
>In the Mobile IP book, they talk about redist this network into the IGP,
>but
>I suspect that if you configure your IGP to cover this virtual network,
>that
>might also work. But, on this last point, I'm not sure.
>
>HTH, Tim
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>John
>Matus
>Sent: Wednesday, June 01, 2005 6:08 PM
>To: ccielab@groupstudy.com
>Subject: ip mobile virtual-network
>
>what is the virtual network? is it an arbitrary address assigned for the
>tunneling of the traffic from the HA to the FA? i think it's safe to
>assume
>
>that is is not the home network or the network associated with the FA......
>
>_________________________________________________________________
>Express yourself instantly with MSN Messenger! Download today - it's FREE!
>http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
>
>_______________________________________________________________________
>Subscription information may be found at:
>http://www.groupstudy.com/list/CCIELab.html
>
This archive was generated by hypermail 2.1.4 : Wed Jul 06 2005 - 14:43:40 GMT-3