[ale] Slow connection on Cisco Switch

Christopher Fowler cfowler at outpostsentinel.com
Fri Oct 14 10:15:11 EDT 2005


This problem fixed.

Apparently there was a problem in negotiating duplex.  The RH box was
running at full and the switch at half.   I forced the port on the
switch to be full and a 10m file transfer went from 4m to 1s.

On Fri, 2005-10-14 at 10:03, Christopher Fowler wrote:
> Okay.
> 
> I'm connected to the switch.
> 
> 6w2d: %LINK-4-ERROR: FastEthernet0/8 is experiencing errors
> Switch#show interface FastEthernet0/8
> FastEthernet0/8 is up, line protocol is up 
>   Hardware is Fast Ethernet, address is 0006.531f.8908 (bia
> 0006.531f.8908)
>   MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, 
>      reliability 253/255, txload 1/255, rxload 1/255
>   Encapsulation ARPA, loopback not set
>   Keepalive not set
>   Auto-duplex (Half), Auto Speed (100), 100BaseTX/FX
>   ARP type: ARPA, ARP Timeout 04:00:00
>   Last input never, output 00:00:00, output hang never
>   Last clearing of "show interface" counters never
>   Queueing strategy: fifo
>   Output queue 0/40, 0 drops; input queue 0/75, 0 drops
>   5 minute input rate 5000 bits/sec, 6 packets/sec
>   5 minute output rate 0 bits/sec, 0 packets/sec
>      3793529 packets input, 3007993828 bytes
>      Received 24356 broadcasts, 0 runts, 0 giants, 0 throttles
>      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
>      0 watchdog, 0 multicast
>      0 input packets with dribble condition detected
>      4792645 packets output, 649608952 bytes, 0 underruns
>      11682 output errors, 84298 collisions, 1 interface resets
>      0 babbles, 11694 late collision, 19773 deferred
>      0 lost carrier, 0 no carrier
>      0 output buffer failures, 0 output buffers swapped out
> 
> It looks like the port is set for half.  I've changed ports and I've
> changed cables.  Is there a way to set the port to FD and see if that
> helps?  Maybe the RH box is running at FD?
> 
> 
> 
> On Fri, 2005-10-14 at 09:36, Christopher Fowler wrote:
> > Its a 2900 XL.  I've not even attempted to configure it.  I purchased
> > off eBay.  
> > 
> > All other computers work well and this thing is fast.  I assuming it is
> > a problem where the switch wants to do FD but the adapter on the RH 7.2
> > box is failing at that.  I had this problem in the past and we had to
> > tell the Cisco to force HD on that port.  I don't know how to do that on
> > a Cisco.  I don't even have the password to the switch.  I'm hoping that
> > the password is not set.  I'm building a console cable now to connect to
> > the console of the Cisco.
> > 
> > 
> > On Fri, 2005-10-14 at 09:31, James P. Kinney III wrote:
> > > On Fri, 2005-10-14 at 09:14 -0400, Christopher Fowler wrote:
> > > > I have a RH box attached to a Cisco Switch.  The connection seems to
> > > > work okay when using ssh and protocols that do not send a lot of data. 
> > > > The LED is green indicating 100m connection.  The problem is when I
> > > > scp.  When I scp it takes almost 3 minutes to transfer 10m. The LED on
> > > > the switch is blinking orange and green when this happens.  Can anyone
> > > > tell me what is going on?
> > > 
> > > Collisions? Does the switch support full duplex or only half? I ran into
> > > a switch that was collision city until I turned full-duplex to
> > > half-duplex. Then it sped up quite nicely.
> > > 
> > > > 
> > > > Thanks,
> > > > Chris
> > > >  
> > > > 
> > > > _______________________________________________
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> > > > Ale at ale.org
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> > 
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