What trunking encapsulation is your network using?
> > I was curious if anyone else had seen this.
> > We have a 2600 with 2 T1's going to other sights. The
> > ethernet port connects it to a Bay 450 10/100 switch.
> > Both switch and router ports are set to 10 / half, but
> > we're still seeing a collision rate of about 19% This seems
> > pretty high to me. Anyone have any thoughts?
If you have a 2620, or a 26xx with a FastEthernet interface, I would create
vlans with 802.1q encapsulation on the 2600. Without a 100mb ethernet
interface, I don't think you can do this, additionally IP plus is required.
Besides that, my only suggestion would be to go to full duplex.
Chris
>From: "Scott Nelson" <[EMAIL PROTECTED]>
>Reply-To: "Scott Nelson" <[EMAIL PROTECTED]>
>To: "Cisco -L post" <[EMAIL PROTECTED]>
>CC: [EMAIL PROTECTED], "Bartlett, DS1" <[EMAIL PROTECTED]>
>Subject: Re: High collision rate on 2600 ethernet port
>Date: Wed, 24 May 2000 08:24:52 -0400
>
>I have 6 Bay Accelars and 190 Baystack 450's into both a Cisco 7507 and
>6509
>Switch with W/RSM and don't see this behavior with the exception of one LAN
>that turned out to be two bad NICs, in a client machine and one in the main
>Novell server. Once those were replaced all was well again.
>
>Time to get real close to your sniffer. <g>
>
>Scott
>
>
>
>
> > I have seen this before when connecting Bay Switches (BlackBox) into our
> > network. We had a packet loss rate of about 30%. When we moved to all
> > Cisco we reduced our loss to about .8% (much better). I was not able to
> > resolve why this happened except to hypothesize that the timing signals
> > between would not synchronize and therefore packet loss occurred.
> >
> > My suggestion is to go with Cisco throughout.
> >
> > -----Original Message-----
> > From: Ed [SMTP:[EMAIL PROTECTED]]
> > Sent: Tuesday, May 16, 2000 12:53 PM
> > To: [EMAIL PROTECTED]
> > Subject: High collision rate on 2600 ethernet port
> >
> > I was curious if anyone else had seen this.
> > We have a 2600 with 2 T1's going to other sights. The
> > ethernet port connects it to a Bay 450 10/100 switch.
> > Both switch and router ports are set to 10 / half, but
> > we're still seeing a collision rate of about 19% This seems
> > pretty high to me. Anyone have any thoughts?
> >
> > Here's the port info...
> >
> > show int e 0/0
> > Ethernet0/0 is up, line protocol is up
> > Hardware is AmdP2, address is 0030.1922.5340 (bia 0030.1922.5340)
> > Internet address is 10.15.28.2/24
> > MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load
> > 34/255
> > Encapsulation ARPA, loopback not set, keepalive not set
> > ARP type: ARPA, ARP Timeout 04:00:00
> > Last input 00:00:00, output 00:00:00, output hang never
> > Last clearing of "show interface" counters 00:49:19
> > Queueing strategy: fifo
> > Output queue 0/40, 0 drops; input queue 0/75, 0 drops
> > 5 minute input rate 2044000 bits/sec, 356 packets/sec
> > 5 minute output rate 1365000 bits/sec, 334 packets/sec
> > 1091341 packets input, 848224944 bytes, 0 no buffer
> > Received 16001 broadcasts, 0 runts, 0 giants, 0 throttles
> > 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> > 0 input packets with dribble condition detected
> > 965919 packets output, 314732326 bytes, 0 underruns
> > 0 output errors, 183580 collisions, 0 interface resets
> > 0 babbles, 0 late collision, 69923 deferred
> > 0 lost carrier, 0 no carrier
> > 0 output buffer failures, 0 output buffers swapped out
> >
> > Ed
> >
> >
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>
>----------------------------------------------------------
>Scott Nelson - Network Engineer
>Wash DC +1202-270-8968
>Los Angeles +1310-367-6646
>mailto:[EMAIL PROTECTED]
>http://www.bnmnetworks.net
>http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=scottnelson@bnmnetwork
>s.net
>----------------------------------------------
>
>"UPIC's (Uninformed People In Charge) reading about the "latest and
>Greatest" bell or whistle but no thought at all to how it integrates,
>what it costs, what it takes to support it, or how it is supported."
>
>-- Donald N. Gallagher
>----------------------------------------------
>
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