Have you tried hard coding duplex and speed settings on all devices
involved?
Josh wrote:
>
> i currently have a 6506 with a 48 port 10/100 blade and a 8 port gigabit
> blade. connected via gigabit i have 3548xls and connected
> to the 48port i have a IBM router that has a ethernet (10) and a TR(16)
> interface. the ethernet network is 10.0.12.0 the token ring is
> 10.0.8.0.
>
> Problems:
>
> 1) today i connect to one of the 3548s only to see messages of the
> interfaces "flapping" going up and down like 10 times per minuit. this
> happens for only some of the ports. why i dont know. also one of the
> ports shows many collisions. this is odd to me because there is
> only a workstation connected to it and it doesnt transfer much data.
> why the collisions? the only idea i have is bad cable or NIC.
>
> 2) the router connected to the 6506 shows ~3 million collisions per
> day. i dont know why. the only thing i can think of is i had
> autonegotition set. i set the speed of the port to 10mb and still
> am recieving colisions. i had to leave so i could see if it was
> as many.
>
> 3) from the token ring network i am able to ping all interfaces on the
> router and all devices on the ethernet except for the 6506 and the 3548
> s. why is this. i cant ping any devices on the token ring from the
> switches either. i can ping them from a workstation though. also
> the 6506 returns error=0 when i try to ping a TR station.
>
> if anyone has any ideas about these problems i would appreciate it.
>
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