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Community Member

Etherchannel between 1924 and 2950

Hi group

Can etherchannel be configured between 1924 and 2950T-24 switch, 1924 has 24 10baseT and 2 10/100 baseT ports, 2950T-24 has 24 10/100 and 10/100/1000 baseT ports.

What I see from cisco doucments is all the ports should be of same speed and duplex.

thanks

fahim

2 REPLIES
Silver

Re: Etherchannel between 1924 and 2950

Fahim,

The 1924F is capable of Etherchannel using the two FastEthernet uplinks. Enterprise code is also required. These uplinks can be attached to any open FastEthernet switch ports on your 2950 for your Etherchannel.

Hope this helps you,

Don

Community Member

Re: Etherchannel between 1924 and 2950

Hi Don

thanks for ur reply, I dont have a 1924F model its 1924-EN and I doubt its enterprise version, I want to replace one switch out of two with one 2950T-24 for configuring load-balancing. I have the configuration of both the switches, can u help me in shedding some light, whether this configuration is correct, is something missing or any other changes to done.

Configuration is 1924 switch:

port-channel mode desirable

port-channel template-port fastethernet 0/27

port-channel preserve-order

Spantree-template 1 forwarding-time 4

Spantree-template 1 hello-time 1

Spantree-template 1 max-age 6

ip address 173.23.1.150 255.255.255.0

All interface (10basteT) says

no spantree start-forwarding

Each server has dual NIC cards which is connected to two switches in this

fashion.

NIC 1 goes to Switch A -->port 1

NIC 2 goes to Switch B -->port 1.

similarly all servers goes in this fashion.

Fast etherchannel groups the two 100baseT ports into a single, logical

transmission path.

Now I want to replace one 1924 switch with 2950T-24 which has 24

10/100 ports and 2 1000base T ports.

I have configured Etherchannel in 2950T-24

Interface Vlan 1

Ip address 172.23.1.150

Switch#conf t

Switch(config)#interface gigabitethernet0/1 -2

Switch(config-if)#channel-group 5 mode desirable

Switch(Config)#port-channel load-balance (default is source mac)

and configured spanning-tree as

switch(config)#spanning-tree vlan 1 forward-time 4

switch(config)#spanning-tree vlan 1 max-age 6

switch(config)#spanning-tree vlan 1 hello-time 1

once I replace a 2950T-24 switch from a 1924 the configuration doesnt seem

to work, link goes up and down on gigabit ethernet interface, i can only

ping my vlan inteface.

Is there anything missed out, will a etherchannel can be bundled between a

100base T and 1000base T,

I have set the speed and duplex in 2950T-24 to 100 full and forced the

10/100 24 ports to 10baseT half-duplex.

Give me your valuable inputs, if I have missed out anything give me a

suggestion.

thanks

fahim

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