my members...

etherchannel configuration...  it's a good idea if both sides match...


interface FastEthernet0/1
 switchport mode trunk
 speed 100
 duplex full
 channel-group 1 mode on
!
interface FastEthernet0/2
 switchport mode trunk
 speed 100
 duplex full
 channel-group 1 mode on
!
interface FastEthernet0/3
 switchport mode trunk
 speed 100
 duplex full
 channel-group 2 mode on
!
interface FastEthernet0/4
 switchport mode trunk
 speed 100
 duplex full
 channel-group 2 mode on

nice way to keep track of membership...


sw2950_01#sh int port-chan 1 | inc Members
  Members in this channel: Fa0/1 Fa0/2
sw2950_01#


sw2950_01#sh int port-chan 2 | incl Members
  Members in this channel: Fa0/3 Fa0/4
sw2950_01#

don't let spanning tree decide root... the root id is the id of the root and the bridge id is the id of this switch... if  the priority of the two is equal, this is the root... if the mac's are the same, this is the root... if it says this is the root, this is the root... if all ports are forwarding, this is the root... how do you like my root...


sw2950_01(config)#spann vlan 50 root primary

sw2950_01(config)#do sh spann vlan 50

VLAN0050
  Spanning tree enabled protocol rstp
  Root ID    Priority    24626
             Address     0009.b752.d780
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    24626  (priority 24576 sys-id-ext 50)
             Address     0009.b752.d780
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Po2              Desg FWD 12        128.65   P2p
Po1              Desg FWD 12        128.66   P2p

sw2950_01(config)#

and some aggregation up inside..


sw2950_01(config)#do sh int port-channel1
Port-channel1 is up, line protocol is up (connected)
  Hardware is EtherChannel, address is 0009.b752.d781 (bia 0009.b752.d781)
  MTU 1500 bytes, BW 200000 Kbit, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Full-duplex, 100Mb/s, media type is unknown media type
  input flow-control is off, output flow-control is off
  Members in this channel: Fa0/1 Fa0/2