layer 3 etherchannel

[suthomas1]

Hello,

On a 6500, two ports are connected as uplink to non-cisco device. We want to make the 6500 ports as etherchannel.

Currently the ports are in access mode being under a SVI vlan. below is the current configuration:-

int vlan 51

ip addr 1.1.1.1/30

int fa0/24

swit access vlan 51

int fa0/25

swit access vlan 51

How do we create an etherchannel for these ports in this scenario. The vlan 51 serves for routing between 6500 and upstream device.

Thanks in advance!

[Raju Sekharan]

Hi

If you are planning to keep the IP Address is on VLAN, then the Port-channel will be L2 port-channel

You can configure LACP between the cisco and non-cisco device

Cisco side configuration should be like this

interface Port-channel1

switchport

switchport access vlan 51

interface fa 0/24

switchport

switchport access vlan 51

channel-group 1 mode active

interface fa 0/25

switchport

switchport access vlan 51

channel-group 1 mode active

Thanks

Raju

[suthomas1]

Thanks Raju.

I need the ip addressing as that is used for routing(next hop) between the devices. So in this case, will keeping the portchannel as layer2 be a better option?

[Raju Sekharan · Accepted solution]

1. IP address can remain on Vlan 51 if you are using L2 Port-channel

int vlan 51

ip addr 1.1.1.1/30

2. But if you are looking for Pure Layer 3 ether-channel, no need of VLAN, you can put the config as below

interface Port-channel1

no switchport

IP address 1.1.1.1/30

interface fa 0/24

no switchport

channel-group 1 mode active

interface fa 0/25

no switchport

channel-group 1 mode active

Thanks

Raju

[suthomas1]

Thanks again. I have 1.1.1.2/30 on the other side of the device.

Both ip's are used to route from either devices. In this case, is a L3 PO better or just let remain the ip's on vlan.

[Raju Sekharan]

In that case you can go with L3 Port-channel

Thanks

Raju

[Raju Sekharan]

Hi

Make sue that you configure other end device also for LACP

Thanks

Raju