> -----邮件原件----- > 发件人: Peter Psenak [mailto:[email protected]] > 发送时间: 2014年1月29日 17:11 > 收件人: Xuxiaohu > 抄送: [email protected]; [email protected] > 主题: Re: [spring] [OSPF] fwd: New Version Notification for > draft-xu-ospf-global-label-sid-adv-00.txt > > Xiaohu, > > On 1/29/14 09:53 , Xuxiaohu wrote: > > For example, assume a label block {1000, 1999} is allocated for prefix > segments by almost all SR routers and a global label 1005 is allocated to a > given > prefix segment, for a given seldom SR router which couldn't preserve the above > label block and allocates a different label block (e.g., {2000, 2999}) > instead, a > local label corresponding to that global label (or that prefix segment) could > be > calculated through offsetting, i.e., the result is 1005+ (2000-1000)=2005. In > this > way, there is no need for introducing the Index concept anymore and therefore > the architecture becomes much easy to understand. More importantly, > compared to the index binding advertisement, the label binding advertised by > the IGP is exactly the same as that in the label forwarding table for those > most SR > routers which have allocated the above common label block, which is much > beneficial when doing troubleshooting. This approach does not violate the > strongest MPLS dogma (i.e., labels MUST be local) while! > taking in > to account the actual situation, IMHO > > above would require the "seldom SR router" to know the offset from the SRGB > used by other routers. How do you envision that to be learned?
Hi Peter, I don't think it's a big problem. The common SRGB could either be manually configured on the seldom SR router or advertised by the MS. Best regards, Xiaohu > regards, > Peter > > > > > Best regards, > > Xiaohu _______________________________________________ OSPF mailing list [email protected] https://www.ietf.org/mailman/listinfo/ospf
