Thanks for the clarification Ole! Dave
Ole Drews Jensen wrote: > > Yes and No. > > To the original question where only two switches are connected to each > other, the connection will be point-to-point, and a Full Duplex will work, > just like it does between my two 3548's (where the output in my previous > e-mail came from). > > If more than two switches are stacked, they will work in Half Duplex. > > As for the question if you can use two GigaStack Modules and connect both > port in both modules so you have 4 connections between the to switches to > give you a 4Gbps, I am not sure what the answer is to that. > > 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: MADMAN [mailto:[EMAIL PROTECTED]] > Sent: Thursday, March 21, 2002 12:08 PM > To: Ole Drews Jensen > Cc: [EMAIL PROTECTED] > Subject: Re: Gigastack Etherchannel [7:39033] > > 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" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=39071&t=39033 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
