thats true spirit of GS... On Wed, Feb 10, 2010 at 11:03 PM, nicholas golden <[email protected]>wrote:
> Mustafa, > Don't take offense, I realize I may have come off a bit snappy. > I was simply pointing out some information in case you didn't get a chance > to see it. I really was helping out. > > From what I understand: > > Maybe IPV6 just got set up - it goes INCOMPLETE if the link layer data as > still forming. > > Reachable - You can get to it, ping it and everyone is happy. > > Stale could mean the neighbor IS reachable, maybe it was a minute ago but > now it's not. Maybe due to the link not being used etc, so it goes STALE. > > Until someone else tries to communicate the state might change to REACHABLE > > > ...or if there is physical problem or other it might go to INCOMPLETE if > the link layer data is still forming...but never does goes to STALE > > he tricky thing is determining if STALE means you can't get to it and no > traffic should go to it until it's declared REACHABLE. However, if it's not > reachable, but traffic was recently sent then it could hit DELAY. > > If you can't get to it then it goes into PROBE which sends out the > solicitations, but if it doesn't hear back.......it could go back to STALE? > > Confusing yes, but is it fun? Yes it is :) I'm sure I am wrong somewhere > and someone will tell me. > > IPv6 = fun times to be had for the whole family! > > References: > > Under section 5.1 > RFC2461 - Neighbor Discovery for IP Version 6 (IPv6) > > The Neighbor Cache contains information maintained by the Neighbor > Unreachability Detection algorithm. A key piece of information is a > neighbor's reachability state, which is one of five possible values. The > following definitions are informal; precise definitions can be found in > Section 7.3.2. > > INCOMPLETE Address resolution is in progress and the link-layer address of > the neighbor has not yet been determined. > > REACHABLE Roughly speaking, the neighbor is known to have been reachable > recently (within tens of seconds ago). > > STALE The neighbor is no longer known to be reachable but until traffic is > sent to the neighbor, no attempt should be made to verify its reachability. > > DELAY The neighbor is no longer known to be reachable, and traffic has > recently been sent to the neighbor. Rather than probe the neighbor > immediately, however, delay sending probes for a short while in order to > give upper layer protocols a chance to provide reachability confirmation. > > PROBE The neighbor is no longer known to be reachable, and unicast Neighbor > Solicitation probes are being sent to verify reachability. > > Read more: http://www.faqs.org/rfcs/rfc2461.html#ixzz0fAFmWT5d > > > --- On *Wed, 2/10/10, Mustafa Yadav <[email protected]>* wrote: > > > From: Mustafa Yadav <[email protected]> > Subject: Re: [OSL | CCIE_RS] stale stands for whart > To: "nicholas golden" <[email protected]> > Cc: "ccie_rs" <[email protected]> > Date: Wednesday, February 10, 2010, 10:57 AM > > > good for you nick.but I hope you understand me why I am asking > here.Sometimes even very basic quesiton be answered very good and > there will be very trciky answer on it.I can google as well as you > can:) > even I know your videos on youtube.Google is good but asking you gurus > is better than google.. > good day. > > On 2/10/10, nicholas golden > <[email protected]<http://us.mc630.mail.yahoo.com/mc/[email protected]>> > wrote: > > Did you read the RFC? > > > > http://www.faqs.org/rfcs/rfc2461.html > > > > Here is a piece of it > > > > IPV6 Neighbor discovery protocol RFC 2461. I looked for it in 2460 but > did > > not see it, took me all of about 20 seconds. I would really look these > > things up on the RFC that's the bible of how things work. > > > > Here you go. > > > > " > > STALE The neighbor is no longer known to be reachable but until traffic > is > > sent to the neighbor, no attempt should be made to verify its > reachability. > > > > Read more: http://www.faqs.org/rfcs/rfc2461.html#ixzz0f9rsyGI3"; > > > > > > > > I'm just another student here, but google and RFC-editor.org are my > buddies! > > > > -Nick > > --- On Wed, 2/10/10, Mustafa Yadav > > <[email protected]<http://us.mc630.mail.yahoo.com/mc/[email protected]>> > wrote: > > > > > > From: Mustafa Yadav > > <[email protected]<http://us.mc630.mail.yahoo.com/mc/[email protected]> > > > > Subject: [OSL | CCIE_RS] stale stands for whart > > To: "ccie_rs" > > <[email protected]<http://us.mc630.mail.yahoo.com/mc/[email protected]> > > > > Date: Wednesday, February 10, 2010, 9:58 AM > > > > > > hi guys, > > > > in ipv6 what does stale stands for exactly? > > please help > > _______________________________________________ > > For more information regarding industry leading CCIE Lab training, please > > visit www.ipexpert.com > > > > > > > > > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
