Hi, Shishio, Thanks for your reply and clarification.
Best Regards! Jiang Dong Tsinghua University 2012-03-27 From: Shishio Tsuchiya Date: 2012-03-26 22:19 To: jiangdong345 CC: cai.lei3; jacni; softwires; cuiyong Subject: Re: [Softwires]Comments about 6rd MIB Jiang Thanks for comments. I will do presentation this draft at Friday,and I will ask which idea is better to the audience and chairs. If IP tunnel MIB extended is better than 6rdMIB,so we would update and define extension of IP tunnel MIB. [DJ] I think RFC4087 is designed for common information about tunnels. So extra information that can not be included in RFC4087 need to be contained in specialized MIB such as 6rd, softwire mesh. BTW, since 6rd can perform encapsulation in a stateless way, there is no need to maintain an encapsulation table. AFBRs in softwire mesh scenario need to perform I-IP encapsulation with E-IP prefix information, a we defined an Encapsulation Table in the softwire mesh MIB. Comments are welcome : ) 6rd MIB is completely reflecting to 6rd configuration. http://tools.ietf.org/html/rfc5969#section-7 "sixRdIpv4MaskLen " is same function as IPv4MaskLen. IPv4MaskLen The number of high-order bits that are identical across all CE IPv4 addresses within a given 6rd domain. For example, if there are no identical bits, IPv4MaskLen is 0 and the entire CE IPv4 address is used to create the 6rd delegated prefix. If there are 8 identical bits (e.g., the Private IPv4 address range 10.0.0.0/8 is being used), IPv4MaskLen is equal to 8 and IPv4MaskLen high-order bits are stripped from the IPv4 address before constructing the corresponding 6rd delegated prefix. Regards, -Shishio (2012/03/26 15:59), Jiang Dong wrote: > Hi,authors of 6rd MIB, > I get some comments about 6rd MIB draft. > 1) You mentioned the "tunnelIfXTable" in section 5.2. I think it is a good > idea to extend the tunnel MIB, some scenario cannot be included in RFC4087, > such as point to multi-point tunnel like softwire mesh. > 2) It seems you miss the conformance part in the definition. > 3) I'm not quite sure what's the "sixRdIpv4MaskLen " used for, can you > explain it? > Regards! > ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ > Jiang Dong > Tsinghua University >
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