Hi Lee, good thought. If we enable 5 tuple on BR for IPv4, required DA+P shall meet DA+P requirement. Using SA+P from 5-tuple should help to correlate with user IP based on DHCP assignment.
Key here is on BR to do 5-tuple after de-encapsulation of IPv6. Rajiv, pls check if we can do this on ASR9k as BNG. Regds Ramesh From: Lee, Yiu [mailto:[email protected]] Sent: 09 May 2018 08:35 To: Rajiv Asati (rajiva); Ramesh R Chandra Cc: [email protected]; [email protected]; [email protected] Subject: Re: [EXTERNAL] Re: [Softwires] ISP CGN logging inc. Destination ?? Let’s me be precise. This regulation must exist today. So there must exist a way to log the five-IPv4-tuple. If Ramesh combines the dhcpv6 logs with the current five-IPv4-tuple logs, will this be enough? From: "Rajiv Asati (rajiva)" <[email protected]<mailto:[email protected]>> Date: Tuesday, May 8, 2018 at 5:42 PM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>, "Lee, Yiu" <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [EXTERNAL] Re: [Softwires] ISP CGN logging inc. Destination ?? Agree with Ramesh. DHCP(v6) helps with logging source IP assignment, but that’s it. The requirement here is about keeping track of not only source IP+port, but also destination IP+port per connection. DHCP(v6) doesn’t apply here. -- Cheers, Rajiv From: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: Tuesday, May 8, 2018 at 1:15 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>, Rajiv Asati <[email protected]<mailto:[email protected]>>, Softwires-wg list <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: RE: [EXTERNAL] Re: [Softwires] ISP CGN logging inc. Destination ?? Not really. Need IPv4 because desitination IP is on IPv4. Regds ramesh chandra M#: +91 90829 61303 O#: +91 22 7965 9762 -----Original Message----- From: Lee, Yiu [mailto:[email protected]] Sent: 07 May 2018 16:46 To: Ramesh R Chandra Cc: [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]> Subject: Re: [EXTERNAL] Re: [Softwires] ISP CGN logging inc. Destination ?? Just a quick thought. Will the dhcpv6 logs help? Sent from mobile device, pardon possible typo. On May 7, 2018, at 7:06 AM, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> wrote: Dear Ian, thanks for clarifications. Regulator in India mandated to preserve the following details for each flow. 1. Source IP + Port (private for end subscriber device) 2. Destination IP + Port (public) 3. Translated IP + port (public) 4. Date and time There is no brainer and all this is available in NAT44. MAP being stateless, no such data available from MAP-BR. We are exploring alternate option on BR to create this data in MAP. Pls advise. Regds ramesh -----Original Message----- From: [email protected]<mailto:[email protected]> [mailto:[email protected]] Sent: 04 May 2018 17:28 To: Rajiv Asati (rajiva) Cc: Softwires-wg list; [email protected]<mailto:[email protected]>; Ramesh R Chandra Subject: Re: [Softwires] ISP CGN logging inc. Destination ?? Hi Rajiv, Please see inline. Cheers, Ian On 4. May 2018, at 12:01, Rajiv Asati (rajiva) <[email protected]<mailto:[email protected]>> wrote: Ian, Thanks for sharing the URL. While not explicit, “all metadata” would include both source and destination A+P. Is that the right interpretation? [if - My understanding is that per-flow logging is necessary to meet the requirement, but I’m not familiar enough with the legislation to know what exactly needs to be stored.] If an ISP were to use “binding” mode on the BR, then without using net flow/IPFIX, How could the compliance be achieved ? [if - If there’s address sharing and the requirement is to provide an exact match to a data retention request (in some countries, a list of e.g. 16 users is OK), then AFAICS, you have to use IPFIX. The implementation problem for this is compounded by the lack of state table on most BR implementations (e.g. how do you know when a UDP session has completed without state for that flow?)] "Confidentiality Warning: This message and any attachments are intended only for the use of the intended recipient(s). are confidential and may be privileged. 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