I've done a bit of reading and it seems that they are half duplex when configured as a daisy-chained stack, but autonegotiate to full duplex when used for example in a star configuration (at either 1Gb or 2Gb (one cable or two)). (I know they are full duplex in this configuration - tried it)
But... I still can't find the answer to the original question. I think tomorrow I will have the bits available to try it out. Only got two Gigastack modules at the moment, so can't try it. Cheers, Gaz ""MADMAN"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > They are. I learned that the hard way!!! > > Dave > > Jeffrey Reed wrote: > > > > I'm not sure, but I thought I read somewhere that the GigaStack GBICs are > > half duplex. I think I read somewhere that you shouldn't use them in an > > environment that requires QOS. If this is true, your throughput would be > > better with 1000B-T GBICs or Fiber GBICs running at full duplex. > > > > Jeffrey Reed > > Classic Networking, Inc. > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Gaz > > Sent: Thursday, March 21, 2002 10:16 AM > > To: [EMAIL PROTECTED] > > Subject: Gigastack Etherchannel [7:39033] > > > > Hi all, > > > > Been searching all over CCO for this info....anybody know for sure? > > > > Using Gigastack, can both slots be used as "Gigastack Etherchannel" (ie all > > four ports (two on each module)) to provide 4Gb link. > > > > Scenario would be a 3508 with two Gigastack modules and 3548 with two > > Gigastack modules - connected with four gigastack cables. > > Various web pages show 2Gb full duplex using Gigastack and also mention 4Gb > > Full Duplex using Gigabit Ethernet. Even though the latter was on a > > Gigastack data sheet, it was worded as though (or could mean) an > alternative > > was to use Gigabit Ethernet at 4Gb. > > > > Hopefully I've got the question over - Basically, I know 4Gb is possible > > with fibre SX/LX etc, but what about Gigastack? > > > > Thanks, > > > > Gaz > -- > David Madland > Sr. Network Engineer > CCIE# 2016 > Qwest Communications Int. Inc. > [EMAIL PROTECTED] > 612-664-3367 > > "Emotion should reflect reason not guide it" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=39053&t=39033 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
