10-16-2013 04:38 AM - edited 03-07-2019 04:03 PM
HI,
Can one end of the ehterchannel act as layer 3 and other end act as layer 2 access port?
int fa0/1
switchport mode access
channel-group 1 mode on
int fa0/2
switchport mode access
channel-group 1 mode on
!
interface Port-channel1
switchport mode access
Layer 3
int port-channel 1
IP adress 10.10.10.1 255.255.255.248
int G0/1
no ip address
channel-group 1 mode on
int G0/2
no ip address
channel-group 1 mode on
10-16-2013 04:43 AM
Hello,
Yes, you can mix them. If possible, though, do not use the mode on but instead, use LACP using mode active on both ends of the EtherChannel.
Best regards,
Peter
10-16-2013 04:46 AM
Many thanks Peter.
I will now try that.
Regards
Salman
10-16-2013 11:40 AM
Hi Peter,
I also thought both end of a etherchannel should have same config (duplex, speed, config, etc). It is interesting if you could configure one end as L3 & other end of the etherchannel config as L2 & bring the etherchannel up.
Salman: Anyway test it & let us know if it works ?
Regards
Rasika
10-16-2013 12:38 PM
Hi.
I will work but, for example if one end of the port-channel is configured in the broadcast domain 10.10.10.0/49 then the other end of the port-channel that is assigned to vlan x ( vlan 1 in the example you typed in the intial post) must be in the same broadcast domain otherwise traffic will be dropped.
Regards.
Wilson B.
07-14-2016 11:25 AM
Hi
Did you ever test this case? I need to do L3 etherchannel on ASR to L2 etherchannel on 2960X without using subinterfaces on router.
11-24-2019 04:45 AM
Yes it is possible. I have done this between ASR1001 and C3850 Switches.
11-24-2019 11:02 AM
Hi,
yes of course this is possible.
It is the exact same as if you wouldn't have a port-channel.
I am just wondering what your use case is to attach an access port to a Routed Port.
Do you have a physical area that just needs one vlan?
Otherwise you will need a trunk configured on the switchport side,
and subinterfaces with vlan-tagging configured on the routed port side.
Also as already mentioned,
your port channel will work fine, but with the current configuration it will be a static port channel (mode on).
If you use "mode active" it will utilize LACP a channel-protocol.
Which can save you if misconfiguration or miscabling occoured.
So using LACP (mode active) is always recommendable.
Best regards and have a nice day,
Julian
P.S. please mark the resolution or helpful answers if applicable.
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