I dont see you specify ISL encapsulation on the 35XX
> -----Original Message-----
> From: Rick Thompson [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, December 19, 2000 7:49 AM
> To: [EMAIL PROTECTED]
> Subject: trunking problem
>
> Let's see if anyone can figure this one out:
>
> Running into an interesting problem with trunking. We
> have multiple setups running this configuration and
> running into CRC's on the trunk ports, and slow
> transfer and corrupted files sent inbetween the vlans.
> Currently we have had 2 ccie from cisco look at it
> with no help, and TAC has been working it for 5 days
> with no luck so far. We have 50 locations with this
> setup and 6 of them are reporting corrupted files.
> There is a 3640 router with 2FE and the switch is
> either a 3524xl or 3548XL, all code, cards, memory and
> flash are identical.
> The 3640 is setup as follows:
>
> interface FastEthernet0/1
> no ip address
> no cdp enable
> speed 100
> duplex full
> no ip directed-broadcast
>
> interface FastEthernet0/1.1
> description Trusted Network
> encapsulation isl 1
> no ip directed-broadcast
> no ip redirects
> ip address x.x.x.1 255.255.255.128
>
> interface FastEthernet0/1.2
> description Display Network
> encapsulation isl 2
> no ip directed-broadcast
> no ip redirects
> ip address x.x.x.129 255.255.255.192
>
> interface FastEthernet0/1.3
> description untrusted Network
> encapsulation isl 3
> no ip directed-broadcast
> no ip redirects
> ip address x.x.x.193 255.255.255.192
>
> The 3524XL or 3548XL is configured as follows:
>
> interface fast ethernet 0/24
> description router
> speed 100
> duplex full
> switchport mode trunk
>
>
> The CRC increment atleast 1 every 7 secs. The more
> data that gets transfere, the worse it gets. We also
> see CRC's on port 23 which is the server. I tried
> switching from isl trunking to dotq and that appeared
> to slow down the CRC, but that is it.
>
> Anybody have any ideas?
>
> Rick Thompson
> CCNA, MCSE
>
>
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