Jimmy wrote: > > You mentioned that the GUI will automatically choose the best > path and build > the cross-connect. So how does it build the link? What is the > criteria for > choosing it? Could you explain it to me. (Link from A to C). > The problem is > i am veri curious on how the link is chosen. For example, > shortest delay, > BW, etc? > > Cheers !
Again, it's entirely up to you or the proprietary code behind that GUI. As far as I know, the issue isn't addressed in any standard. In most cases, it's safe to assume the GUI will choose least number of intermediate hops. In your example, given that the number of hops would be the same via either direction, there is likely some arbitrary toss of the coin. All clockwise or all counterclockwise...something along those lines. What's important to remember is that there is no one-size-fits-all anwser in a production network. To illustrate, say you could sell your protection bandwidth to a customer with low-priority needs. Say that the customer has facilities geographically in the neighborhood of nodes A & B. In that case, you'd put your working A - C traffic via the A, D, C route. In the case of a fiber break between A & D or D & C, traffic would wrap back around the ring and kick off the low-priority A - B traffic that was "re-sold." See what I mean? There isn't a firm answer to your question. Regards, Scott > > > ""s vermill"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Jimmy wrote: > > > > > > Hi, > > > Sorry if the following question sound stupid to you. let > say i > > > have 4 nodes. > > > > > > B > > > / \ > > > A C > > > \ / > > > D > > > > > > If BLSR is employed, how do i know in which direction is the > > > packet flow > > > from A to C. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=58198&t=58082 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
