Re: [netext] Review of I-D: draft-ietf-netext-pd-pmip6-06
Basavaraj Patil <bpatil1@gmail.com> Thu, 23 May 2013 14:16 UTC
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Date: Thu, 23 May 2013 09:16:28 -0500
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From: Basavaraj Patil <bpatil1@gmail.com>
To: "Sri Gundavelli (sgundave)" <sgundave@cisco.com>
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Cc: "netext@ietf.org" <netext@ietf.org>, "draft-ietf-netext-pd-pmip@tools.ietf.org" <draft-ietf-netext-pd-pmip@tools.ietf.org>
Subject: Re: [netext] Review of I-D: draft-ietf-netext-pd-pmip6-06
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Inline: On Wed, May 22, 2013 at 4:01 PM, Sri Gundavelli (sgundave) < sgundave@cisco.com> wrote: > Hi Raj, > > Inline … > > Inline: > > > On Mon, May 20, 2013 at 10:26 AM, Sri Gundavelli (sgundave) < > sgundave@cisco.com> wrote: > >> Hi Raj, >> >> >> Adding to what carlos said. Just one clarification. >> >> >> >> On 5/20/13 8:04 AM, "Carlos Jesús Bernardos Cano" <cjbc@it.uc3m.es> >> wrote: >> >> >> >> >> 5. In Sec 4.4.1, step 4: >> >> "If the mobile access >> >> gateway does not know the delegated prefix(es), then the >> >> delegated mobile network prefix in the DMNP option(s) MUST be >> >> set to the unspecified IPv6 address "::", " >> >> >> >> >> >> How would the MAG know the delegated prefix(es)? Unless it is >> >> just renewing the assigned prefix(es)? >> >> >> The prefixes can be statically configured in the policy profile. >> Typically >> mobile networks are statically configured (but registered with the LMA) as >> we don't want the prefixes to disappear if the egress link goes down and >> that will result in local communication between the hosts to break. So, >> the prefixes are statically provisioned in the mobile network. But, >> mobility support comes up only when there is active session with LMA >> enabling the forwarding. >> >> If the MAG knows the prefixes, it can indicate them in the DMNP option. >> If the MAG does not know the prefixes, it will carry a NULL value. >> LMA assigns them based on what is in the BCE state. >> >> This is consistent with how the home address (IPv4 HoA, HNP) options are >> carried in PMIP signaling messages. >> >> > Raj> What does this mean: "Typically > mobile networks are statically configured (but registered with the > LMA)...."? > > Also: "So, > the prefixes are statically provisioned in the mobile network." > > Would be good if you can clarify since you have a view or interpretation > that I am not sure everyone is in sync with. > > > [Sri] I'm just saying, the subnets (DMNP's) are configured manually in > the mobile network. But, those subnets belong to the LMA from routing point > of view. This is almost like a static IP configuration. > There is also the other approach, every thing happens dynamically, the > prefix is obtained from the LMA/MAG and then gets configured in the mobile > network. > In most deployments, IMO, static configuration is preferred as they don't > want the networks/prefixes to disappear, if the LMA is not reachable and > the PMIP tunnel goes down. There won't be IP mobility or external > reachability, but there will be internal node to node communication. > > Regards > Sri > Raj> Well, okay. I get that. But from reading the text in the I-D it is not very clear. Would recommend reworking the text to explain the above. -Raj -- Basavaraj Patil
- [netext] Review of I-D: draft-ietf-netext-pd-pmip… Basavaraj Patil
- Re: [netext] Review of I-D: draft-ietf-netext-pd-… zhou.xingyue
- Re: [netext] Review of I-D: draft-ietf-netext-pd-… Carlos Jesús Bernardos Cano
- Re: [netext] Review of I-D: draft-ietf-netext-pd-… Sri Gundavelli (sgundave)
- Re: [netext] Review of I-D: draft-ietf-netext-pd-… Basavaraj Patil
- Re: [netext] Review of I-D: draft-ietf-netext-pd-… Basavaraj Patil
- Re: [netext] Review of I-D: draft-ietf-netext-pd-… Sri Gundavelli (sgundave)
- Re: [netext] Review of I-D: draft-ietf-netext-pd-… Basavaraj Patil
- Re: [netext] Review of I-D: draft-ietf-netext-pd-… Carlos Jesús Bernardos Cano
- Re: [netext] Review of I-D: draft-ietf-netext-pd-… Basavaraj Patil