[IPsec] SPI Collision

2012-04-05 Thread Daniel Migault
Hi, I am wondering how SPI collision is considered by IKEv2, and have not found any documentation on it, so if there are some, please let me know. My current understanding is that when an CREATE_CHILD_SA exchange is performed the Initiator and Responder announce the SPI in the SA payload. If the

Re: [IPsec] SPI Collision

2012-04-05 Thread Yoav Nir
Hi Daniel On Apr 5, 2012, at 9:22 PM, Daniel Migault wrote: Hi, I am wondering how SPI collision is considered by IKEv2, and have not found any documentation on it, so if there are some, please let me know. My current understanding is that when an CREATE_CHILD_SA exchange is

Re: [IPsec] draft-zhang-ipsecme-multi-path-ipsec

2012-04-05 Thread Stephen Kent
At 1:12 AM + 4/3/12, Xiangyang zhang wrote: A new version of I-D, draft-zhang-ipsecme-multi-path-ipsec-00.txt has been successfully submitted by Xiangyang Zhang and posted to the IETF repository. Filename:draft-zhang-ipsecme-multi-path-ipsec Revision:00 Title:Multiple Path

Re: [IPsec] [IPSec]: Multiple path IP Security for draft-zhang-ipsecme-multi-path-ipsec-00

2012-04-05 Thread Xiangyang zhang
Dharmanandana, 1. SA bundle is the ordered list of SAs. For SA cluster, it contains a set of SA. Which SA is used for traffic protection is purely implementation dependent. The SA cluster means only one SA is used while SA bundle means all SAs are used. Single SA can be viewed as cluster

Re: [IPsec] draft-zhang-ipsecme-multi-path-ipsec

2012-04-05 Thread Xiangyang zhang
Steve, Your understanding is partially right. Only that anti-replay window could possibly be bigger if two paths go along the different routes. If two paths go along the same route, it is no difference from the traditional single SA. But the attacker does not know two paths carry the same