Kwame,
Make sure you have the correct cable type (normal or crossover). Otherwise,
try swapping it out for another that you know is good. Given your config,
its probably not a duplex issue. You should do a "show int" on the affected
ports to double check that the ports are actually functioning in full
duplex. 6509's in native IOS mode are notorious for troubleshooting problems.
FYI - its a bad idea to enable portfast on any port that connects to a
multiport device (hub, router, or switch). It can cause problems with
spanning tree and routing loops. It seems to me that I've seen it interfere
with trunking too.
HTH,
Karen
*********** REPLY SEPARATOR ***********
On 7/19/2001 at 5:36 PM Kwame wrote:
>The counters won't clear. I used the ff command:
>
>CLEAR COUNTERS VLAN1
>
>I'm still seeing the same number of collisions on vlan1. Here's my trunk
>configuration. What am I missing?
>
>6509: interface fa2/10
> no ip address
> duplex full
> switchport
> switchport trunk encapsulation isl
> switchport trunk allowed vlan 1,206,207,1002-1005
> switchport mode trunk
> !
>
>2905: interface FastEthernet0/1
> duplex full
> speed 100
> switchport trunk allowed vlan 1,206,207,1002-1005
> switchport mode trunk
> spanning-tree portfast
> !
>
>""Hire, Ejay"" wrote in message
>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>> You need to clear the counters and establish a time frame for this. 19
>> million collisions isn't a lot in a well loaded switch that has been up
>for
>> a long time.
>>
>> If you clear the counters and the number increases quickly, you may have a
>> speed or duplex issue or a bad cable. You said this was an ISL trunk so
>you
>> should manually set both ends at 100 mbps
>> (or 1000mbps if you've got the special card for the 2924 and a good port
>on
>> the 6500) and also manually set the link to full duplex.
>>
>>
>> -----Original Message-----
>> From: Kwame [mailto:[EMAIL PROTECTED]]
>> Sent: Thursday, July 19, 2001 12:25 PM
>> To: [EMAIL PROTECTED]
>> Subject: Large Collisions on Vlan1 [7:12961]
>>
>>
>> What does it mean when the "sh int vlan1" output shows large collisions?
>For
>> example on a 2924 XL with an ISL trunk to a 6509 I go the ff output upon
>> issuing the SH INT VLAN1 command:
>>
>> 0 output errors, 19108404 collisions, 0 interface resets
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