Yiu, > The way to set up the tunnel is similar to ds-lite. The CPE will learn the > TC's v6 address, then encap v4 packets into v6 to the TC. To create the > v4-v6 mapping in the TC's routing table. This could be done by the TC to > look at the dhcp message or by keepalive packets from the cpe. We haven't > decided which way is preferred. But the tunnel itself is stateless.
since we have tended to classify mechanisms into 'stateless' and 'stateful'. I think we need a common understanding of what mean by these terms. simply stated, if the mechanism scales by the number of subscribers/tunnels then it is stateful. if it scales by the amount of packets/traffic then it is stateless. if you agree with that definition I would think 4over6 is stateful, since it suggests to integrate the tunnel state into the RIB. i.e. you allocate a piece of memory per subscriber and you have to snoop on DHCP messages to refresh this state. cheers, Ole _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
