Junos OS

Hello All,

I am trying to setup MC-LAG between tow MX104 .FOr the same status of ICCP is up but interface MC-AE state is "Current State Machine's State: mcae config exchange error"

Below is snap of

manager@MX1# run show interfaces mc-ae
Member Link : ae1
Current State Machine's State: mcae config exchange error
Local Status : active
Local State : down
Peer Status : Unknown
Peer State : down
Logical Interface : ae1.0
Topology Type : bridge
Local State : up
Peer State : Unknown
Peer Ip/MCP/State : 10.8.0.2 ae0.0 up

manager@MX1# run show iccp detail

Redundancy Group Information for peer 10.8.0.2
TCP Connection : Established
Liveliness Detection : Up
Redundancy Group ID Status
1 Up

Client Application: l2ald_iccpd_client
Redundancy Group IDs Joined: 1

Client Application: lacpd
Redundancy Group IDs Joined: 1

Any one has idea what could be reason for mcae config exchange error abd peer status is down.

Many Thanks,

Brijesh Patel

I have also hit this issue, do you have a solution now? Thanks!

Attached working configuration. I have not added diagram but interface connected like a like.

Attachment(s)

MX1 mc-lag config.txt   9 KB 1 version

MX2 mc-lag config.txt   8 KB 1 version

Did you get any solution on this old topic ? I am facing the same error message.

Config issues .WOrking config i attached same thread above.

Hi Gaetan3810,

If you are getting this error, please very your mc-ae config. Make sure each router must have a different chassis-id.

mc-ae {
mc-ae-id 1;
redundancy-group 1;
chassis-id 0;
mode active-active;
status-control active;
}

mc-ae {
mc-ae-id 1;
redundancy-group 1;
chassis-id 1;
mode active-active;
status-control standby;
}

[KUDOS PLEASE! If you think I earned it!

If this solution worked for you please flag my post as an "Accepted Solution" so others can benefit..]

And different status-control.