From: Yasmin Lara (ylara@sunsetlearning.com)
Date: Mon Jun 11 2007 - 01:33:16 ART
When you ping any link local address you have to specify an interface
because the router does not know which interface to use to send the echo
requests out, as link local addresses, as the name say, have local
significance. Furthermore, the prefix used for link local addresses
(FE80::/10) will be used on all interfaces. If you check the routing
table you will find an entry for FE80::/10 pointing to null 0 (as the
prefix is not on an specific interface but on all of them).
On a PC, running XP for example, it's the same thing. If you ping
FE80::something the computer doesn't know which interface to use (could
be the wireless interface, the teredo interface, etc) so again, you have
to specify which interface. The way you indicate the interface you want
is by entering %Idx (or zone id). You can find the number for a specific
interface under netsh>interface ipv6 show interface.
HTH
Yasmin.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
John Jones
Sent: Sunday, June 10, 2007 1:49 AM
To: ccielab@groupstudy.com
Subject: IPv6 Interface IDs
I'm going through the IPv6 stuff and in the OSPFv3 output for show ipv6
ospf
neighbors it shows an Interface ID. I know M$ OSs have a %number ater
the
IPv6 addresses as well. What is the significance and why is it used? I
know
when I have to ping link-local addresses I have to specify an interface.
Why?
Thanks everyone.
John
This archive was generated by hypermail 2.1.4 : Sun Jul 01 2007 - 17:24:48 ART