there isn`t a mistake as such .......spanning tree cisco version PVST does 
NOT work with other variants..ie ieee spanning tree...
what you need to do is
1 either use a cisco router for trunking OR use PVST+ which is compatible 
with non cisco eqiupment


check cisco.com for more info


steve

>From: Piatnitchi Cristian <[EMAIL PROTECTED]>
>Reply-To: Piatnitchi Cristian <[EMAIL PROTECTED]>
>To: "'" <[EMAIL PROTECTED]>
>Subject: Cat5000, BayStack350 and 802.1q trunking
>Date: Mon, 13 Nov 2000 17:15:41 +0200
>
>Hi all
>
>I am trying to connect a Catalyst 5505 and a BayStack350 using a 802.1q
>trunk.
>My setting are the following. It doesn't work . The only configuration 
>which
>works is when
>I put Disable on STP Learning (see below) in BayStack config. I really need
>STP for both of them.
>I cannot disable it !
>
>Catalyst trunking ports : 2/18, 2/19
>Where is the mistake ?
>
>Thanks in advance
>Cristian Piatnitchi
>
>************************************Cat5505*********************************
>**************************
>
>set vlan 1 name default type ethernet mtu 1500 said 100001 state active
>
>#spantree
>#uplinkfast groups
>set spantree uplinkfast disable
>#backbonefast
>set spantree backbonefast disable
>#vlan 1
>set spantree enable     1
>set spantree fwddelay 15    1
>set spantree hello    2     1
>set spantree maxage   20    1
>set spantree priority 4000  1
>
>
>
>clear trunk 2/18 2-1005
>set trunk 2/18 nonegotiate dot1q 1
>clear trunk 2/19 2-1005
>set trunk 2/19 nonegotiate dot1q 1
>
>set spantree portfast    2/17-24 disable
>
>
>
>Port      Mode         Encapsulation  Status        Native vlan
>--------  -----------  -------------  ------------  -----------
>  2/18     nonegotiate  dot1q          trunking      1
>  2/19     nonegotiate  dot1q          trunking      1
>
>****************************************BAyStack
>Configuration*****************************************
>
>                           MultiLink Trunk Configuration
>
>Trunk         Trunk Members           STP Learning   Trunk Mode    Trunk
>Status
>----- ------------------------------- ------------ ---------------
>------------
>   1   [  /23 ][  /24 ][  /   ][  /   ] [ Eanbled  ]      Basic      [
>Enabled  ]
>   2   [  /   ][  /   ][  /   ][  /   ] [ Normal   ]      Basic      [
>Disabled ]
>   3   [  /   ][  /   ][  /   ][  /   ] [ Normal   ]      Basic      [
>Disabled ]
>   4   [  /   ][  /   ][  /   ][  /   ] [ Normal   ]      Basic      [
>Disabled ]
>   5   [  /   ][  /   ][  /   ][  /   ] [ Normal   ]      Basic      [
>Disabled ]
>   6   [  /   ][  /   ][  /   ][  /   ] [ Normal   ]      Basic      [
>Disabled ]
>
>
>
>                          VLAN Configuration
>
>                        Create VLAN:  [    1 ]
>                        Delete VLAN:  [      ]
>                        VLAN Name:    [ VLAN #1 ]
>
>                           Port Membership
>             1-6       7-12     13-18     19-24
>            ------    ------    ------    ------
>  Unit #1   UUUUUU    UUUUUU    UUUUUU    UUUUTT
>
>
>                             VLAN Port Configuration
>
>
>
>               Port:                        [ 23  ]
>               Filter Tagged Frames:        [ No  ]
>               Filter Untagged Frames:      [ No  ]
>               Filter Unregistered Frames:  [ No  ]
>               Port Name:                   [ Port 1 ]
>               PVID:                        [    1 ]
>               Port Priority:               [ 0 ]
>
>             Port:                        [ 24  ]
>               Filter Tagged Frames:        [ No  ]
>               Filter Untagged Frames:      [ No  ]
>               Filter Unregistered Frames:  [ No  ]
>               Port Name:                   [ Port 1 ]
>               PVID:                        [    1 ]
>               Port Priority:               [ 0 ]
>
>
>
>
>Cristian Piatnitchi
>
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