On Thu, Mar 1, 2012 at 9:02 AM, Ole Trøan <[email protected]> wrote: >> What is the expected behavior when that address becomes unavailable? > > reliability is achieved through anycast. there are multiple BRs advertising > the same address into the IGP. > did that address your question? >
Sorry, i have not really been able to find this out on my own. But, i thought there was tight coupling of the BR address resources and CPE address assignments. Meaning BR1 has for me (the subscriber) the public address 1.1.1.1 with ports 2000-3000 and that is communicated to CPE1 BR1 goes has a fault, goes off line. BR2 is now the closest anycast path to CPE1 My CPE is sending packets to BR2 (as anycast) assuming BR2 owns 1.1.1.1 and port set 2000-3000. But, how does BR2 know anything about 1.1.1.1? Does BR2 now announce in BGP to the world it owns 1.1.1.1? Is that going to work? If so, where is it documented? Or, does the CPE have to reboot and get some new config assignment based on BR2 now being the closest? How does this oscillating load (BR failure, shortest path changes, ... ) associated with anycast bode for the IPv4 address reserves ? Seems like the public IPv4 address pool on each BR would have to be over-provisioned to handle some N*X level of load. Sorry if i am missing something obvious. Cameron _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
