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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: IPv6 questions
And unless you are on only certain particular devices (e.g. L3 switches) then the end device won't necessarily have any relevant clue what VLAN it's on. I have never seen/heard of an RFC for it either and would certainly wonder "WHY?". :) Scott -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Erik Nordmark Sent: Tuesday, January 29, 2008 1:44 PM To: snort bsd Cc: [email protected]; juniper-nsp Subject: Re: IPv6 questions snort bsd wrote: > Never mind > > it is the VLAN number. But which RFC define this? I've never seen an IPv6 RFC specify to put the VLAN number in the link-local address. Thus this must be an (odd) choice made by some implementation. Perhaps the implementation somehow requires that all the link-local addresses for all its (sub)interfaces be unique, even though the RFCs assume that the implementation should be able to deal with multiple interfaces with same same link-local address. Erik > Thanks all > > Dave > > ----- Original Message ---- > From: snort bsd <[email protected]> > To: [email protected]; juniper-nsp <[email protected]> > Sent: Monday, 28 January, 2008 3:05:59 PM > Subject: IPv6 questions > > > Hi All: > > With link-local IPv6 address, the converting from MAC-48 to EDU-64 > address format (FF FE stuffing). How does the VLAN tags affect the > conversion? > > With the rule of FF FE stuffing, I can see clearly work on the ptp > interfaces. But on those Ethernet based VLANs, it doesn't seem to > follow that pattern: > > Current address: 00:90:69:4a:b9:5d, Hardware address: > 00:90:69:4a:b9:5d > > well, i assume the link-local should be fe80::290:69ff:fe4a:b95d/64. > actually, it shows: > > Destination: fe80::/64, Local: fe80::290:6903:94a:b95d > > how does the router get this 03 09 instead of ff fe? > > Thanks all > > > > > > > > > Make the switch to the world's best email. Get the new Yahoo!7 > Mail now. www.yahoo7.com.au/worldsbestemail > > > > > > > > Make the switch to the world's best email. Get the new Yahoo!7 > Mail now. www.yahoo7.com.au/worldsbestemail > >
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