Opening the thread again. In my server I have #19 vlans configured on 10Gb Ethernet card. I don't know on which vlan the destination link-local address is.
1. As a user am I supposed to do ping6 on all of them one by one? 2. How does the TCP will work? Open #19 connections to the destination link-local address with different scope id?? How does the application running on top of TCP stack know about the physical interfaces of the system? Regards, Parav Pandit --- On Wed, 4/14/10, Mohacsi Janos <[email protected]> wrote: > From: Mohacsi Janos <[email protected]> > Subject: Re: which interface to choose to send to destination link-local > address - any RFC? > To: "Parav Pandit" <[email protected]> > Cc: [email protected] > Date: Wednesday, April 14, 2010, 3:01 PM > > > > On Wed, 14 Apr 2010, Parav Pandit wrote: > > > Hi, > > > > In IPv6 stack implementation, > > > > How IPv6 stack should select the outgoing interface to > choose (when multiple interfaces) are available? > > Typically when the destination is the link-local > address which may be on-link on both the interfaces (before > > the neighbor discovery) is done? > > > > Should IPv6 stack do Neighbor discovery on all > multiple interfaces in the host? > > > > Which RFC defines this behavior? I referred RFC 3484 > (Default Address Selection for IPv6) but doesn't seem to > > define this. > > > > I hope I am asking on the right mailing list. If not > please divert me to the correct one. > > > The application should know which interface/link to choose > in case of link-local address. The link-local is relevant to > a specific link only. > > e.g. > > ping6 -I bge0 fe80::21b:63ff:fe9f:4527 > PING6(56=40+8+8 bytes) fe80::206:5bff:fef2:41c1%bge0 --> > fe80::21b:63ff:fe9f:4527 > 16 bytes from fe80::21b:63ff:fe9f:4527%bge0, icmp_seq=0 > hlim=64 time=7.292 ms > 16 bytes from fe80::21b:63ff:fe9f:4527%bge0, icmp_seq=1 > hlim=64 time=0.656 ms > ^C > --- fe80::21b:63ff:fe9f:4527 ping6 statistics --- > 2 packets transmitted, 2 packets received, 0.0% packet > loss > round-trip min/avg/max/std-dev = 0.656/3.974/7.292/3.318 > ms > > > ping6 fe80::21b:63ff:fe9f:4527 > ping6: UDP connect: Network is unreachable > > If the application knows which link to use then IPv6 > protocol stack might use ND to dicover/reach the node. > > Best Regards, > Janos Mohacsi > -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
