10-27-2009 01:16 PM - edited 03-06-2019 08:19 AM
Hi
What is the difference is L2 Etherchannel Vs L3 EtherChannel.
10-27-2009 01:22 PM
L2 etherchannel is a switch port and L3 etherchannel is a routed port.
L2 etherchannel can carry STP and trunking information like 802.1q. No IP address is required to assign on interface Port-Channel.
L3 etherchannel, you will need to configure IP address on it.
Regards,
jerry
10-27-2009 01:26 PM
10-27-2009 01:37 PM
Thanks
Server has 3NIC and requirement is to have high speed connection. Each NIC is 10/100/1000 with redundancy.
L3 Etherchannel is suitable for this requirement. But L3 Etherchannel also has other option, which suits best for this??
Assume
Server IP : 192.168.1.100/24
10-27-2009 01:51 PM
Nasr,
In case you want to connect the server(3Nics) with the switch. I'd better go for Layer2 EtherChannel. The server needs to do a teaming for 3 interfaces. The switch side is configured the L2 Etherchannel(Access-Vlan) for that. Why Layer2? Because we always configure the gateway on L3 device. (grin)
HTH,
Toshi
10-27-2009 01:58 PM
What steps are required on cisco switch in terms of config.
assuming 3NIC is connected to 3ports on the switch.
10-27-2009 02:14 PM
Nasr,
It depends on which teaming modes on your server are supported. Assuming that Your server supports LACP for teaming NICs. The switch side has to be configured in this mode as well. The following command is for the switch.
==LACP== Let's assume that the server is in VLAN 10
!
Switch# configure terminal
Switch(config)# interface range gigabitethernet0/1 -3
Switch(config-if-range)# switchport mode access
Switch(config-if-range)# switchport access vlan 10
Switch(config-if-range)# channel-group 5 mode active
Switch(config-if-range)# end
!
You should use the link posted by the other poster to understand what LACP does for us.
HTH,
Toshi
10-27-2009 02:21 PM
Thanks Toshi
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