Zsombor Papp wrote: > At 10:21 PM 6/24/2003 +0000, MADMAN wrote: > >> The spokes only connect via the hub if you don't have a PVC between >> the spokes. It doesn't matter if your uni or bi, > > > You can actually buy unidirectional PVC service? What do people do with > that? > > Curious, > > Zsombor
No you can't buy unidirectional, at least I have never heard of any such thing and we have over 100,000 frame ports in service. I made that comment based on the posters use of the terms, I didn't try to imply they existed. Dave > >> you have 2 DLCI's per >> PVC, one on each end. In our frame network we using local addressing of >> DLCI's, DLCI 16 could be on both ends of a PVC. Some carries use what >> is called global which I think you may be refering to. The users don't >> have control of the DLCI numbering if connecting to the public frame >> network but can request DLCI's which we can usually accomodate. I have >> no idea what a "forward" and "return" DLCI is!?! >> >> Dave >> >> annlee wrote: >> > Even if it is "switched from spoke-to-spoke", at Layer 1 the spokes >> connect >> > via the hub. And to do anything with the traffic, Layer 2 must be >> > consulted -- which gives us Priscilla's DLCI switching table. And, >> unless >> > the traffic is unidirectional, you will need DLCIs for the opposite >> > direction, as well. I don't know Cisco FR that well, but in at least >> some >> > vendors' FR implementations, the "return" DLCIs do not have to have the >> same >> > numbers as the "forward" ones. That actually enables you to number >> according >> > to a pattern which indicates connectionality. And it also makes the >> DLCI >> > switching table twice the size that Priscilla showed. >> > >> > Annlee >> > >> > ""Larry Letterman"" wrote in message >> > news:[EMAIL PROTECTED] >> > >> >>My opinion is that it will go to the hub site since it's a point to >> >>point network.. >> >>If the hub were to be a multi-point connection to the spokes, which >> >>would be one network, >> >>Then the traffic could be switched from spoke to spoke... >> >> >> >> >> >>Larry Letterman >> >>Cisco Systems >> >> >> >> >> >> >> >> >> >>-----Original Message----- >> >>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of >> >>Aaron Ajello >> >>Sent: Tuesday, June 24, 2003 10:06 AM >> >>To: [EMAIL PROTECTED] >> >>Subject: FR concept question [7:71263] >> >> >> >> >> >>This is probably a very simple concept question, but I've asked a >> couple >> >>people and haven't gotten a solid answer. >> >> >> >>If I've got two frame relay spoke sites connected point to point with a >> >>hub site and a server in one spoke site copies a file to a server in >> the >> >>other spoke site, does all the traffic pass through the hub site, or is >> >>it switched within the frame cloud? >> >> >> >>I guess what I'm wondering is does a frame cloud act somewhat like a >> >>lan, where initially packets will go through the default gateway and be >> >>routed and then the following packets will be switched? >> >> >> >>thanks. >> -- >> David Madland >> CCIE# 2016 >> Sr. Network Engineer >> Qwest Communications >> 612-664-3367 >> >> "Government can do something for the people only in proportion as it >> can do something to the people." -- Thomas Jefferson -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 "Government can do something for the people only in proportion as it can do something to the people." -- Thomas Jefferson Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71346&t=71263 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
