Re: [alto] FW: I-D Action:draft-stiemerling-alto-deployments-05.txt
Martin Stiemerling <Martin.Stiemerling@neclab.eu> Wed, 03 November 2010 12:43 UTC
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From: Martin Stiemerling <Martin.Stiemerling@neclab.eu>
To: "Schmidt, Christian 1. (NSN - DE/Munich)" <christian.1.schmidt@nsn.com>, "alto@ietf.org" <alto@ietf.org>
Thread-Topic: [alto] FW: I-D Action:draft-stiemerling-alto-deployments-05.txt
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Date: Wed, 03 Nov 2010 12:42:54 +0000
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Subject: Re: [alto] FW: I-D Action:draft-stiemerling-alto-deployments-05.txt
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Hi Christian, You're right in the case of the network operator also operating the ALTO server. The operator can feed this information to the ALTO server. Martin martin.stiemerling@neclab.eu NEC Laboratories Europe - Network Research Division NEC Europe Limited | Registered Office: NEC House, 1 Victoria Road, London W3 6BL | Registered in England 2832014 > -----Original Message----- > From: Schmidt, Christian 1. (NSN - DE/Munich) > [mailto:christian.1.schmidt@nsn.com] > Sent: Friday, October 29, 2010 12:43 PM > To: Martin Stiemerling; alto@ietf.org > Subject: RE: [alto] FW: I-D Action:draft-stiemerling-alto-deployments- > 05.txt > > Hi Martin, > > am I right, that mobile peers can be identified by the Alto Server? > If yes, perhaps the Alto Server can make something like a fast check of > the mobile peer position in the map - before offering him as source > peer. > The result of this check must not be perfect, the result should be > valid > in a majority of cases. > > Br > Christian > > > > > > > > > -----Original Message----- > From: ext Martin Stiemerling [mailto:Martin.Stiemerling@neclab.eu] > Sent: Friday, October 29, 2010 9:48 AM > To: Schmidt, Christian 1. (NSN - DE/Munich); alto@ietf.org > Subject: RE: [alto] FW: I-D > Action:draft-stiemerling-alto-deployments-05.txt > > Hi Christian, > > You are raising a good point, which is not covered by the deployments > draft. > > Mobile peers will also challenge the map-based approach, unless the > preference information always indicates to turn away from these types > of > peers. This could be the most likely case, i.e., the ISP will configure > to rank those mobile peers really bad, so that other peers will not > pick > them. > > The challenge is in the case where there is more specific configuration > needed. For instance, static mobile peers (e.g., UMTS stick in home > gateway), might get a slightly better rating, as well as, mobile peers > on HDSPA. > > However, the rating for such a mobile peer may change rapidly, if the > peer starts moving and even changes the access technology (e.g. HSDPA > to > EDGE). The IP address of the peer will remain the same but the rating > will dramatically change. > > I guess this is hard to manage with the map-based approaches. > > Thanks and Cheers to Munich > > Martin > > > > -----Original Message----- > > From: Schmidt, Christian 1. (NSN - DE/Munich) > > [mailto:christian.1.schmidt@nsn.com] > > Sent: Friday, October 29, 2010 9:18 AM > > To: Martin Stiemerling; alto@ietf.org > > Subject: RE: [alto] FW: I-D Action:draft-stiemerling-alto- > deployments- > > 05.txt > > > > Hi Martin, > > > > a short question concerning the map-based approach: > > > > "The main assumption for map-based approaches is that the information > > provided in these maps is static for a longer period of time, where > > this > > period of time refers to days, but not hours or even minutes. This > > assumption is fine, as long as the network operator does not change > any > > parameter, e.g., routing within the network and to the upstream > peers, > > IP address assignment stays stable (and thus the mapping to the > > partitions). However, there are several cases where this assumption > is > > not valid, as: > > 1. ISPs reallocate IPv4 subnets from time to time; > > 2. ISPs reallocate IPv4 subnets on short notice; > > 3. IP prefix blocks may be assigned to a single DSLAM which > serves > > a > > variety of access networks." > > > > What about mobile peers? How do they fit into a map-based approach? > > > > Christian > > > > > > > > > > > > > > > > > > -----Original Message----- > > From: alto-bounces@ietf.org [mailto:alto-bounces@ietf.org] On Behalf > Of > > ext Martin Stiemerling > > Sent: Friday, October 29, 2010 8:37 AM > > To: alto@ietf.org > > Subject: [alto] FW: I-D Action:draft-stiemerling-alto-deployments- > > 05.txt > > > > Dear all, > > > > There is a slightly updated version of the deployment considerations > > draft. > > > > Rich Alimi, Richard Yang, Xianghui Sun, Sebastian and me will come up > > with a joint proposal how to evolve the document at the next IETF. > > > > Any comments are appreciated! > > > > Martin > > > > > martin.stiemerling@neclab.eu > > NEC Laboratories Europe - Network Research Division > NEC Europe Limited | Registered Office: NEC House, 1 Victoria Road, > London W3 6BL | Registered in England 2832014
- [alto] FW: I-D Action:draft-stiemerling-alto-depl… Martin Stiemerling
- Re: [alto] FW: I-D Action:draft-stiemerling-alto-… Schmidt, Christian 1. (NSN - DE/Munich)
- Re: [alto] FW: I-D Action:draft-stiemerling-alto-… Martin Stiemerling
- Re: [alto] FW: I-D Action:draft-stiemerling-alto-… Schmidt, Christian 1. (NSN - DE/Munich)
- Re: [alto] FW: I-D Action:draft-stiemerling-alto-… Martin Stiemerling