please help to verify my etherchannel config on 6509 switch

[netman2k5]

This EtherChannel config is for the same channel group 1:

interface Port-channel1

description to 6509-Core-A P1

ip address x.x.x.x y.y.y.y

ip route-cache flow

!

interface GigabitEthernet1/1

description to 6509-Core-A T1/1 (P1)

no ip address

ip route-cache flow

channel-group 1 mode desirable

!

interface GigabitEthernet2/1

description to 6509-Core-A T2/1 (P1)

no ip address

ip route-cache flow

channel-group 1 mode desirable

Questions :

1/ same config on 6509 for either doing EtherChannel to switch 3548 or 2950 ?

2/ do we have the same configs on floor switches ?

Thanks in advance.

[Prashanth Krishnappa]

1) Yes... Just use a different channel-group number

2)You are using a L3 port channel on the 6500. Not all switches support layer 3 interfaces(example 2950/3548 does not). So with these switches you will need to configure layer 2 etherchannels.

[netman2k5]

Our 2950/3548 switches are layer 2 so please help with sample config for layer 2 etherchannels Thank you very much.

[Prashanth Krishnappa]

The following tech tip should help you

http://www.cisco.com/warp/public/473/144.html

[netman2k5]

Sir,

I have a last question: in "int port channel", do I need to specify ip address ? thanks.

netman2k5

[netman2k5]

here is my configs, please give some comments:

This EtherChannel config is for the same channel group 1 on 6509 switch - IOS:

interface Port-channel1

description to 6509-Core

ip address x.x.x.x y.y.y.y

ip route-cache flow

!

interface GigabitEthernet1/1

description to 6509-Core

no ip address

switchport

switchport mode trunk

switchport trunk encapsulation dot1q

channel-group 1 mode desirable

!

interface GigabitEthernet2/1

description to 6509-Core

no ip address

switchport

switchport mode trunk

switchport trunk encapsulation dot1q

channel-group 1 mode desirable

config Etherchannel on 2950 switches (version 12.1)

interface Port-channel1

switchport mode trunk

interface FastEthernet0/2

switchport mode trunk

channel-group 1 mode desirable

interface FastEthernet0/3

switchport mode trunk

channel-group 1 mode desirable

configure Etherchannel on 3548XL switches (version 12.0) :

interface FastEthernet0/1

port group 1

switchport trunk encapsulation dot1q

switchport mode trunk

!

interface FastEthernet0/2

port group 1

switchport trunk encapsulation dot1q

switchport mode trunk

!

Thanks a lot.