Ya I hear ya!!  Ole pointed it out well also.  

  Never stop learning that's for sure!!

  Dave

Gaz wrote:
> 
> Dave,
> 
> You're losing it....You're lucky we know how good you are normally :-)
> 
> Quotes from your URL:
> A point-to-point connection operates in full-duplex mode. Figure 2-7 shows
> an example of supporting switches with point-to-point connections.
> 
> You can connect from three to nine switches in a cascaded stack
> configuration. The cascaded stack operates in half-duplex mode. Figure 2-8
> shows the connections on some supporting switches.
> 
> Gaz
> 
> ""MADMAN""  wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Not according to this:
> >
> >
>
http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/gbic/ig_gbic/mam
> oins.htm#xtocid357913
> >
> >   I changed a stack from half to full thinking that made more sense and
> > it took the stack down a while back.
> >
> >   Dave
> >
> > Ole Drews Jensen wrote:
> > >
> > > GigaStack GBIC's are Full Duplex:
> > >
> > > ELVIS#show int gigabitEthernet 0/1
> > > GigabitEthernet0/1 is up, line protocol is up
> > >   Hardware is Gigabit Ethernet, address is 0002.fd13.52f1 (bia
> > > 0002.fd13.52f1)
> > >   MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
> > >      reliability 255/255, txload 1/255, rxload 1/255
> > >   Encapsulation ARPA, loopback not set
> > >   Keepalive not set
> > >   Auto-duplex (Full), link type is autonegotiation, media type is
> > > CX_GIGASTACK
> > >   output flow-control is off, input flow-control is off
> > >   ARP type: ARPA, ARP Timeout 04:00:00
> > >   GigaStack module(0.2) in GBIC slot. link1 is up, link2 is down
> > >   Last input 00:00:06, output 00:00:01, output hang never
> > >   Last clearing of "show interface" counters 11w1d
> > >   Queueing strategy: fifo
> > >   Output queue 0/40, 0 drops; input queue 0/75, 0 drops
> > >   5 minute input rate 107000 bits/sec, 15 packets/sec
> > >   5 minute output rate 91000 bits/sec, 16 packets/sec
> > >      122086095 packets input, 1719966070 bytes, 0 no buffer
> > >      Received 3149732 broadcasts, 0 runts, 0 giants, 0 throttles
> > >      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> > >      0 watchdog, 163799 multicast, 0 pause input
> > >      165588418 packets output, 149633091 bytes, 0 underruns
> > >      0 output errors, 0 collisions, 0 interface resets
> > >      0 babbles, 0 late collision, 0 deferred
> > >      0 lost carrier, 0 no carrier, 0 pause output
> > >      0 output buffer failures, 0 output buffers swapped out
> > >
> > > Hth,
> > >
> > > Ole
> > >
> > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > >  Ole Drews Jensen
> > >  Systems Network Manager
> > >  CCNP, MCSE, MCP+I
> > >  RWR Enterprises, Inc.
> > >  [EMAIL PROTECTED]
> > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > >  http://www.RouterChief.com
> > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > >  Need a Job?
> > >  http://www.OleDrews.com/job
> > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > >
> > > -----Original Message-----
> > > From: Jeffrey Reed [mailto:[EMAIL PROTECTED]]
> > > Sent: Thursday, March 21, 2002 10:22 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: RE: Gigastack Etherchannel [7:39033]
> > >
> > > 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"
-- 
David Madland
Sr. Network Engineer
CCIE# 2016
Qwest Communications Int. Inc.
[EMAIL PROTECTED]
612-664-3367

"Emotion should reflect reason not guide it"




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