RE: (Long) Network Slow

From: Murali Rao (muralig19@xxxxxxxxx)
Date: Tue May 07 2002 - 05:53:24 GMT-3


   
had faced a similar problem..there was a duplex mismatch.
corrected it and it was fine.

Murali.

--- "Abraham, Ajith" <Ajith.Abraham@FLHOSP.ORG> wrote:
> You may want to check the if there is any duplex mismatch
> with the server
> and the switchport etc.
>
> -----Original Message-----
> From: Scott Morris [mailto:swm@emanon.com]
> Sent: Monday, May 06, 2002 11:28 AM
> To: 'Jeff Szeto'; ccielab@groupstudy.com
> Subject: RE: (Long) Network Slow
>
>
> Being that you're connected to a switch and all.. And
> with the input
> errors you are receiving (mostly CRC's), I would hazard a
> guess that it
> is cable-related. Check the physical layer! You didn't
> include any
> details about that topology in your e-mail, but there are
> a myriad of
> things that can cause intermittant problems on a physical
> link,
> particularly when it begins to be saturated (like opening
> attachments).
> Get a cable scanner!
>
> The next likely problem would be the NIC itself on the
> server, but this
> isn't nearly as likely as the physical cable.
>
> Scott
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> Jeff Szeto
> Sent: Monday, May 06, 2002 12:30 AM
> To: ccielab@groupstudy.com
> Subject: OT: (Long) Network Slow
>
>
> Hi Group,
>
> Sorry for this OT thread, but I need help.
>
> My friend's network has a novell file server and an email
> server. Users
> complain sometimes it takes a long time to open a file or
> an email
> attachment. All the PCs and servers are connected via two
> 3500 switches
> which are interconnected via gigabit module.
>
> I check the switches and see the port that connecting to
> novell server
> has many errors (see the show interface below), while the
> other ports
> seems OK.
>
> FastEthernet0/35 is up, line protocol is up
> Hardware is Fast Ethernet, address is 0008.a3d0.f863
> (bia
> 0008.a3d0.f863)
> MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation ARPA, loopback not set
> Keepalive not set
> Full-duplex, 100Mb/s, 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 1d01h
> Queueing strategy: fifo
> Output queue 0/40, 0 drops; input queue 0/75, 0 drops
> 5 minute input rate 225000 bits/sec, 64 packets/sec
> 5 minute output rate 68000 bits/sec, 61 packets/sec
> 4839382 packets input, 1992532408 bytes
> Received 21073 broadcasts, 0 runts, 0 giants, 0
> throttles
> 24545 input errors, 24545 CRC, 0 frame, 302 overrun,
> 302 ignored
> 0 watchdog, 236 multicast
> 0 input packets with dribble condition detected
> 7751432 packets output, 3144451132 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 output buffer failures, 0 output buffers swapped
> out
>
>
> I also use a sniffer to see what is happening. Although
> not much was
> found, I list the major finding below. They appear from
> time to time and
> my lead to the problem. There is no loop on the switches
> and users have
> the permissions for the files.
>
> Source ---> Destination ----- Summary
> PC Netware Loops on same
> request
> Netware PC Request Denied
> PC Email Ser Ack Too Long
> PC Email Ser Window Frozen
>
> Any suggestions are welcome and appreciated.
> Thank you in advance
>
> Jeff
>



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